Announcing the updated Andros 1.2 Phonostage

Andros Press Release at The Absolute Sound

See and hear it at our next show:

T.H.E. Show Newport Beach May 29th - 31st, 2015

Stereo finalist 2013Andros 1.2

The Andros Phonostage "2013 Analog Product of the Year" Finalist


The Bia 120 wins "2014 Golden Ear Award"




The Leto Preamp "2013 Preamp Product of the Year"


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The Bia 120 Class A Stereo Power Amp

Power Without Compromise

See it and hear it at our next show:
T.H.E. Show Newport Beach May 29th - 31st, 2015

About the Bia 120 Stereo Power Amp

Design Philosophy
With my pro background in the recording studio and live concert mixing, I wanted to build an amp that allowed me to hear music the way I know it should sound.

I wanted it to be easy to use, reliable and with plenty of power to drive the speakers. In short, I wanted power without compromising the music.

Class A Design
The tubes are always on, so you have power when you need it. Class A is fast and responsive. There is no lag, providing your music more punch, transient response, better dynamic range and transparency.

Circuit Topology
I choose a Class A Ultra-linear, Push-Pull circuit design to deliver the most precise, enjoyable and faithful reproduction possible.

Unsung Hero
The unsung hero of a power amp is its power supply. That’s why my design incorporates a custom Toroid power transformer and a choke-based, dual-mono power supply–to deliver all the “slam” you can handle.

Easy to use
With Auto Bias, you need no adjustments. It’s safe, consistent and the settings are always perfect so you can enjoy your music.

What is Bia?
In Greek mythology, Bia is the Titan Goddess of force and power.

Key Features

  • Plenty of power to drive your speakers
  • Pure Class A power is fast and musical
  • 4, 8 & 16 Ohm taps gives you options for your speaker preference
  • Dual Mono gives you less cross talk and better stereo imaging
  • No adjustments with Auto Bias. Its safe, consistent and settings are always perfect
  • Provides enough gain for most standard preamps and accommodate most speakers
  • Choice of either Single Ended RCA or Balanced XLR to suit your needs or cable preferences
  • Transformer balanced XLR input offers true noise rejection and isolation from the preamp
  • Left and Right ground switches work with the XLR balanced inputs to help eliminate ground hums
  • No Negative Feedback provides for virtually no compression to your music
  • Custom Toroid provides lower noise with plenty of available power
  • Global mains power supply can work all over the world
  • KT120 compatible
  • Push-Pull circuit design gives you more power
  • Ultra-Linear circuit design provides lower distortion
  • Low noise levels allow really dark black quiet musical passages
  • Non inverting polarity retains the same phase as the input (so your trumpets blow and don’t suck)
  • Gold pin sockets are more reliable because gold doesn't’t oxidize when it heat cycles
  • Matched quad output tubes retain the stereo balance
  • It’s ready to enjoy with 50 hours of factory burn in on all circuits and vacuum tubes.
  • Elegantly designed, heavy duty 14 &16 gauge zinc plated steel enclosure
  • Each unit is hand built "Made in the USA"
  • The wide frequency response allows you to hear the finest passages in your music.
  • High quality gold plated RCA, XLR connectors and 5 way binding posts
  • All fuses are easily accessible



  • Pure Class A
  • 60 Watts per channel
  • 4, 8 and 16 Ohm output taps
  • 8, 5 and 4 Amp Slow blow fuses for outputs
  • Eight 5 way binding post
  • Non inverting output polarity    
  • Push-Pull and Ultra-Linear design


  • Transformer floating balanced XLR inputs
    Left and Right SE inputs with an impedance of 100K Ohms
  • Left and Right BAL inputs (pin 2 hot) with impedance of 12K Ohms
  • Independent ground lift switches on left and right BAL inputs
  • 2 Volts RMS input to reach rated output

Detailed Specs

  • Dual Mono
  • Auto bias
  • No negative feedback
  • Frequency response 20Hz to 50Khz  ~ 1dB
  • Total Harmonic Distortion ~ 0.22% at 1W output into 8 Ohms
  • Gain of 23dB
  • Noise level > 0.2 mV RMS into 8 Ohms with input shorted
  • 1% metal film resisters throughout
  • Polypropylene capacitors throughout the audio path


  • Custom Toroidal power transformer with global mains
  • Choke based power supply design
  • 120 Volts AC mains
  • Optional factory installed 220V, 230V, 240V 50/60Hz
  • Power consumption at rated output 300 Watts
  • On/Off switch conveniently located on front panel
  • 3 pin IEC power connector with fuse

Active Components

  • Matched quad set of four (4) KT88’s vacuum tubes
  • Four (4) Gold pin ECC82s (12AU7) vacuum tubes
  • High quality gold pin ceramic sockets

Other Features

  • Each unit is made by hand
  • 50 hour factory burn in on all circuits and vacuum tubes
  • Dimensions 17" W X 20" D X 10 " H
  • Weight 66 lbs. (30Kg)
  • 16 and 14 gauge Zinc plated steel enclosure

    Manufacturers Suggested Retail Price $12,500

    Download the Bia 120 manual (available soon)



Announcing the updated Andros 1.2 Phonostage

Designed for music lovers who demand the highest fidelity from their vinyl records

Andros Phonostage "2013 Analog Product of the Year" Finalist


See it and hear it at our next show:
T.H.E. Show Newport Beach May 29th - 31st, 2015

Read entire review from Paul Seydor- The Absolute Sound- April 2012

SP 2014

For true audiophiles, nothing equals the warmth, dynamic range and fidelity of vinyl records. A critical component of every music lovers Vinyl playback system is the Phonostage or Phono preamp.

Why a Phonostage is So Important
When a vinyl record is made the volume of the bass is reduced and the treble is increased. Otherwise, the bass would cut a groove too big for a stylus to read or for the music to fit the record. The phonostage reverses the process by taking the delicate signal from your cartridge and adjusting it so that the bass and treble are restored to their original volume. This common standard is known as the RIAA curve.

The Andros
Inspired by RCA’s vacuum tube circuit designs from the 1930s, the Andros has been engineered to bring you the clarity and depth of the original recording. Your highs will be crisp but not overly emphasized, your midranges clear and present without being shrill and your lows full and firm without being boomy.

A Startling Difference
As we went through testing our panel of audiophiles marveled at hearing subtle nuances, discovering new things in recordings they’d played many, many times. They appreciated its clear stereo image with maximum channel separation and minimal phase distortion.

Hearing is Believing
Words are inadequate to the task of explaining the Andros. You simply must hear it to believe it.

What is Andros?
Andros is a Greek Island, and the home of my grandmother's family.

Key Features

  • The Circuit is specifically designed to provide sufficient amplification to match your cartridge with the rest of your system.
  • Each unit is hand built "Made in the USA".
  • 50 hour factory burn in on all circuits and vacuum tubes.
  • A low Noise level of -75dBu below maximum output allows the quietest passages of you music to be heard.
  • The output circuit is designed to drive your cables and isolates the output from the influence of the next stage.
  • RCA connectors are high quality, Gold plated, recessed with an isolated ground.
  • Isolated ground RCA connectors plus the Ground On/Off switch will allow you to choose the best ground configuration.
  • Recessed RCA connectors are durable and will hold up to the typical Audiophile who loves to change their configuration.
  • All switches and knobs are easily accessible, nothing hidden inside to adjust.
  • Two position MM switch 47K and 15K Ohms to accommodate more cartridges.
  • 10 position MC load switch from 20 to 1000 Ohms and more in the sweet spot above 200.
  • Accommodates both high and low MC output cartridges
  • Elegantly designed 16 gauge steel enclosure to help isolate the electronic “chatter” from nearby equipment.
  • On/Off power switch conveniently mounted on front side panel
  • Easy to read large type on back panel


Inputs per channel

  • Separate MM and MC inputs
  • MM/MC switch
  • MM impedance switch 47K or 15K Ohms
  • MM capacitance 200pf
  • MC Single Ended RCA with isolated ground or Balanced XLR3F
  • MC ground on/off switch
  • MC load impedance adjustable 1000, 800, 600, 500, 400, 300, 200, 100, 50, 20 Ohms
  • MC Internal step up transformers
  • MC High/Low switch with -6dB gain for high output MC cartridges

Outputs per channel

  • Impedance 10K ohms
  • +6V max output level

Active Components

  • Four (4) Gold pin JJ ECC83S/12AX7 vacuum tubes with high quality gold pin ceramic sockets


  • Ground binding post
  • Power consumption 27W , 0 drain when off
  • Voltage 110/120V AC 60Hz
  • Optional factory installed 220V or 230/240V AC 50/60Hz
  • Standard 3 pin IEC power connector
  • ON/OFF power switch conveniently located on the front side
  • Two internal high quality linear regulated power supplies, 250V and 12V

Detailed Specifications

  • Gain MM input 47dB
  • Gain MC input 67dB
  • Noise - 75dBu below max output level
  • Frequency response complies with the original RIAA curve within +or- 0.5 dB
  • RIAA curve is achieved using a passive filter
  • 1% metal film resisters throughout
  • Polypropylene capacitors throughout the audio path

Other Features

  • "Made in the USA" using US and imported parts
  • Each unit is built by hand
  • 50 hour factory burn in on all circuits and vacuum tubes
  • Dimensions 17" W X 12" D X 5" H
  • Weight 20 lbs.
  • 16 gauge zinc plated steel enclosure
  • Two year limited warranty
  • Six months warranty on Vacuum Tubes

Manufacturers Suggested Retail Price $4700

Download the Andros manual (available soon)



Leto Preamplifier

Designed for music lovers who want the best of both worlds: clarity and warmth

Leto front
The Leto Preamp "2013 Preamp Product of the Year"

See it and hear it at our next show:

Basics Rule

My design philosophy is to focus only on the important components and add nothing that could compromise the signal path. The only active components are the vacuum tubes that create a warm musical sound.

Balanced Means Lower Noise

As a longtime audio engineer and producer, I’ve worked with a lot of professional equipment. I always preferred “true floating balanced” inputs and outputs because of their foolproof ability to isolate one piece of gear from the next.
And that means lower noise for a strong, clean and quiet signal.

Easy to Use

The Leto preamp will compliment most systems: tube, solid state or digital. It will work with single-ended and balanced input source or power amplifier combinations.

Focus on the Music

With the Leto in your system it will allow the sonic detail to come through, so you focus is on the music and the hardware will seem to disappear.

What is Leto?

In Greek mythology, Leto is the mother of Apollo.


Key Features

  • Plenty of volume to handle all your source material .
  • The input selection uses only electromechanical switching to provide the most musical detail.
  • The wide frequency response allows you to hear the finest passages in your music.
  • True floating transformer balanced Inputs and Outputs have lower noise and isolate one piece of gear to the next.
  • Left and Right ground switches allows you to control the grounding of the single ended outputs.
  • The output transformers provide a strong and clean signal to your power amplifier.
  • Recessed RCA and XLR connectors are high quality, Gold plated, with an isolated ground.
  • All connectors are durable and will hold up to the typical Audiophile who loves to change their configuration.
  • No pops when the unit is turned on or off.
  • Automatically goes to mute when turned on or off.
  • Remote control Volume, Mute and Mono
  • The remote Mono helps you to trouble shoot your system.
  • Remote bypass switch overrides the mute in case the remote is misplaced.
  • 50 hour factory burn in on all circuits and vacuum tubes.
  • Elegantly designed 16 gauge zinc plated steel enclosure to help isolate the electronic “chatter” from nearby equipment.
  • On/Off power switch conveniently mounted on front side panel.
  • Each unit is hand built "Made in the USA".




  • 5 Inputs
  • 3 sets of Single Ended inputs with an impedance of 100K Ohms
  • 2 sets of true Balanced transformer inputs (pin 2 hot) with an impedance of 10K Ohms
  • Maximum peak input level of 5 Volts RMS


  • 4 Outputs
  • 2 sets of true Balanced transformer outputs (pin 2 hot) with an impedance 150 Ohms
  • 2 sets of Single Ended outputs with an impedance 150 Ohms
  • Maximum peak output level of 10Volts RMS +20dB
  • Independent ground lift switches on the left and right Single Ended outputs
  • 1 set of Single Ended Cinema bypass outputs from input #1

Detailed Specifications

  • Frequency response 10Hz to 100Khz ~ 1dB
  • Distortion ~ 0.02% at 1V RMS input
  • Gain 12dB
  • Signal to noise ~ 100dB below operating level
  • Non inverting output polarity            
  • Cross talk >90dB
  • Front panel adjustable balance control
  • Remote control volume, mute and mono
  • Remote bypass switch on rear panel (just in case the remote is misplaced)
  • 1% metal film resisters throughout
  • Polypropylene capacitors throughout the audio path


  • Power consumption 27W, 0 drain when off
  • Voltage 110/120V AC 60Hz
  • Optional factory installed 220V or 230/240V AC 50/60Hz
  • Standard 3 pin IEC power connector
  • ON/OFF power switch conveniently located on the side panel
  • Two internal high quality linear regulated power supplies, 250V and 12V

Active Components

  • Two (2) Gold pin JJ ECC83S/12AX7 vacuum tubes
  • Two (2) Gold pin JJ ECC82/12AU7 vacuum tubes
  • High quality gold pin ceramic sockets

Other Features

  • Each unit is hand made in the USA
  • 50 hour factory burn in on all circuits and vacuum tubes
  • Dimensions 17” W X 12” D X 5” H
  • Weight 23 lbs.
  • 16 gauge zinc plated steel enclosure
  • Two year limited warranty
  • Six months warranty on Vacuum Tubes
  • Recessed RCA and XLR connectors are Gold plated with an isolated ground.
  • All switches and knobs are easily accessible, nothing hidden inside to adjust.

Manufacturers Suggested Retail Price $7500

Download the Leto manual



Thank you to Paul Seydor and The Absolute Sound for the 2014 "Golden Ear Award" for the Bia 120


We are honored to be the winner of the 2014 "Spirit of Small Business" award as "Exporter of the Year" Read full article


See it and hear it at our next show:

Consumer Electronics Show (CES 2015), January 6th - 9th, 2015 The Ventian Hotel Suite 31-324






Paul Seydor - The Absolute Sound - April 7th 2014
Zesto Audio Bia 120 Stereo Power Amplifier

"Is the Bia perfect? Well, of course, nothing’s perfect, but no matter what I threw at it, I couldn’t make it sound anything less than beautiful..." Read entire review


B1 Robert H. Levi

Bia 120 Class A Amplifier- Positive-Feedback Online - November 2013

"...I have never heard a better amplifier in my reference system, tube or solid-state. It is the best new tube amplifier to reach the market in the last five years priced under $50,000." Read Robert H. Levi's full review in Positive Feedback on line. Read entire review




Download the guide scroll to see Zesto Audio on pages 20, 66, 113, 117, 118, 119, 144 and 147.


Paul Seydor - The Absolute Sound - May 2013
Zesto Audio Leto Preamp - "Sonic Magic"

"The Leto preamplifier, a linestage that is the second product of George and Carolyn Counnas’ Zesto Audio, is cut so completely from the same sonic cloth as Zesto’s Andros PS1 phonostage I reviewed last year ... " Read entire reviews


Stereophile gives the Andros Phonostage a 2013 Class A Rating

Michael Fremer - Stereophile Analog Corner - March 2013
Zesto Audio Andros phono preamp

"...The Zesto had an addictive, warm overall sound, with plenty of impact, detail and grace. It's among the more enjoyable and satisfying phono preamplifiers I've auditioned at any price ..." 


B1 Robert H. Levi
Leto Premap - Positive-Feedback Online - September 2012

"New from Zesto Audio comes the tubed Leto Preamp, pushing the envelope in value and performance in its price range and beyond. With styling similar to the Andros Phono stage, the Leto is a powerful sounding, highly detailed, fantastically quiet, and superbly musical masterpiece that will complement the finest systems. Designed by a brilliant and pragmatic designer who knows great sound and ergonomics, the Leto performed like a thoroughbred in every way musical, and was a joy to control and adjust. The fun factor while working with the Leto made me rethink what has been missing in minimalist preamps that cost even more money these days. What a jewel! The Zesto Audio Leto is a killer design to my way of listening and loving recordings, and may just be the preamp you will buy and keep for the very, very long haul. The Leto receives my highest recommendation." Read entire review

Henry Wilkenson

Leto Line Stage Preamplifier - Audiophilia - September 14th 2012

"I have spent many hours listening to the Leto and Andros combination at Wes Bender’s NYC/Studio. I have also listened to the Leto with the EAR 324 phono stage. The sound of the Leto is on the warm side of the spectrum but not so much as to be in any way objectionable. To be clear, this is not an ‘old school’ tube sounding amplifier. From top to bottom, the sound is very well balanced. It has enough resolving power to allow vocal and instrumental textures to be clearly heard. The Fairfield Four’s Isaac Freeman’s bass vocals are presented with their full richness, bloom and textures intact. I have heard this group’s vocals on other line stages that glossed over these details resulting in a bland presentation. Not so with the Leto". Read entire review


TAS 2012 Editors choise award

Stereophile gives the Andros Phonostage a 2013 Class A Rating

Editor's Choice Award for the Andros PS1 Phonostage


Jeff Dorgay

Andros Phonostage PS1 - TONEAudio - September 2012

"After a solid month of intense audition, the Zesto Andros PS1 exhibits no weaknesses whatsoever. While it has a beautiful visual aesthetic, it continues to be a joy to listen to and is ultimately musical. With many audiophiles on a quest for gear that is increasingly more resolving, it might be easy to overlook the Andros PS1, but truly wise LP lovers will treasure the Zesto because the balance is just right. Much like a car with perfect 50/50 weight balance, along with equal amounts of stop and go, the Andros PS1 doesn't maximize any one parameter at the sake of another and that is its magic." Read entire review


Highlights from the T.H.E. Show Newport 2013
Show Partners: WyWires,TAD, Merrill Williams Audio, Tri-Planar

THE NEWPORT SHOW "Steady As She Goes"
by Neil Gader Jun 05th, 2013

“Finally, system/room synergy is always in short supply at these shows but bravo to a couple exhibits­–at the Hilton, to Zesto Audio, its phono and preamp and VAC amplification with TAD Evolution One loudspeakers, Merrill-Williams table/Tri-planar arm and Wywires cabling, and in a larger room at the Atrium,  Constellation Audio electronics (Cygnus server, Virgo pre amp, Centaur mono amps) driving the Magico S1 via Kubala Sosna Emotion cables. Both of these systems vanished within  the large projection of music and ambience that spread across the front of their respective rooms. These guys had it all going on with stunning resolution and extension and out of this world coherence”.


Stereophile logo

Zesto - WyWires - TAD

By John Atkinson • Posted: Jun 10, 2013

"An honest sound; clarity without detail being thrust forward at the listener,” read my notes from this room at the Hilton, which featured the superb-sounding TAD Evolution One speakers ($29,800/pair) that Kal Rubinson reviews in the July 2013 issue of Stereophile. Both Eva Cassidy singing “Fields of Gold” and the Sir Charles MacKerras’s “Living Stereo” recording of Sibelius’s Finlandia (the latter one of the first classical recordings I owned more than 50 years ago) were well-served by this system, which included Zesto’s Andros PS1 tube phono stage ($4300) that Michael Fremer liked so much when he reviewed it in his March 2013 “Analog Corner” column, Zesto’s new Leto tubed line stage ($7500), and A VAC Phi 200 power amplifier ($9990), all hooked up with WyWires wires. Turntable was the Merrill-Williams ($7200) fitted with a Triplanar arm ($6000) and a Dynavector XX2 Mk.II cartridge ($1985)".


Highlights from the Rocky Mountain Audio Fest 2012
Show Partners: WyWires,TAD, Merrill Williams Audio, Tri-Planar


Stereophile logo

TAD, Zesto, and WyWires

By Art Dudley • Posted: Oct 19, 2012

"I've heard TAD's high-tech CR1 loudspeakers ($42,000/pair) on other occasions, at other shows. But they've never sounded as good as they did at RMAF, where they were demonstrated with electronics from a new company called Zesto (a great, un-self-conscious name that sounds like an affiliate of Slusho, the imaginary Japanese soft-drink company created for the 2008 film Cloverfield). The source was a Merrill-Williams REAL 101 turntable ($7200) with Triplanar arm ($5800), Dynavector XX2 MkII cartridge ($1985), and Zesto Andros phono stage ($4300) and Leto preamp ($7500), plus GamuT D200 amp ($6000) and WyWires cabling— which, like the Zesto gear, comes from Thousand Oaks, CA. On selections by Illinois Jacquet and others, this system sounded richly textured and very involving". Read entire review



NG's Rocky Mountain AudioFest Highlights and Impressions
by Neil Gader Oct 17th, 2012

One of my favorite "small" rooms housed the TAD CR-1 speakers with Zesto phono, preamp and GamuT power & Wywires cabling


Logo Positive Feedback ISSUE 63 september/october 2012

RMAF 2012 - A Photographic Journey, Part 1 by Dave and Carol Clark




Zesto Audio Andros PS1 phono stage, Merrill Williams REAL 101 turntable, Tri-Planar tonearm, Lindemann DAC, TAD CR1 loudspeakers and stands, Zesto Audio Leto preamp, all cabling by WyWires. Loved this room... easy, effortless, and musical. The TAD speakers are great, but then the rest of the system has to be up to snuff as well. Kudos to the people here! Read entire review




Confessions of a Part-Time Audiophile

RMAF12: Bringing it with Zesto Audio, TAD and WyWires

Posted on October 25, 2012

"So, yes — Zesto is certainly one brand that gets it right — to me, at least. Much like their sweet demo at Newport, the sound here at RMAF was lovely: liquid, holographic, dynamic and detailed. This is, in my not-so-humble-opinion, a finisher system. Done, off the merry-go-round, go start investing in estate sales of giant record collections. If you have a huge room, you might want to go elsewhere, but for “normal” rooms, ska-doosh". Read entire review



Highlights from the California Audio Show 2012
Show Partners: WyWires,TAD, Merrill Williams Audio, Tri-Planar


Stereophile logo

CAS 3: Coming Home

By Jason Victor Serinus • Posted: Aug 8, 2012

After visiting a host of rooms that managed to seduce or at least beguile in one manner or another, but never presented anything close to the total gestalt of live music experience (whether acoustic or amplified), it was refreshing to discover in both this room and that of its Zesto/Wywires /TAD neighbor very straight ahead, honest, full-range sound that was impeccably controlled from top to bottom. With Focal Scala Utopias elevated on stands to decouple them from the floor and make their immediacy available to a room filled with audiophiles, a tape of Rimsky-Korsakov's Dance of the Tumblers from Reference Recordings' Exotic Dances at the Opera sounded right on. The midrange in Kenny Burrell and John Coltrane's "Why Was I Born" was just gorgeous. Sax and cymbals were a triumph on this system. It certainly impressed the San Francisco Symphony's recording engineer and producer, Jack Vad, who sent me an email calling the sound of Neil Young and Crazy Horse on this system "pretty transporting."

You already know that I was won over by the honest, straight ahead sound of this system. You can consider me sold on the Zesto Audio Andros PS1 vacuum tube phono stage (Now $4300) and Zesto Audio Vacuum tube Leto preamp ($7500), which I find manage to add bloom to the sound without skewing it too far in the direction of sweet, sweet, sweet. (Who wants Shostakovich to sound sweet?). Ditto for the TAD CR1 loudspeakers ($42,000/pair) on TAD speaker stands ($3600/set). All this works very well with the Merrill Williams Audio REAL 101 turntable ($7200) with Tri-Planar tonearm ($5800) and Dynavector XX2 MKII cartridge ($1985), Lindemann DAC 24/192 ($1099), Lenovo PC running J River 17 ($49.95), GamuT D200 power amp ($6000), and, for the sake of brevity, a host of what I discover to be very good sound WyWires cabling (approx. $7500 total) that was responsible for delivering all this good sound in so clear a manner. Oh, and a Steve Blinn Designs reference equipment rack ($1899) and Acoustimac Acoustic treatments.

"A violin that sounds more like a violin than in most rooms," I wrote. "Gets the harmonics. I love the inner warmth to the sound." The system may not have conveyed the full weight of cellos and basses, but it had one of the most neutral and pleasing tops of any system I heard at CAS3. I felt like leaving this room was an act of defilement. Lord, forgive me my sins; I have more rooms to cover.



Highlights from the T.H.E. Show Newport Beach June 1st - 3rd 2012
Room #524 Show Partners: WyWires,TAD,
Merrill Williams Audio, Tri-Planar



R1 Posted by: Robert Harley in the avguide, June 11th, 2012

Following the great success of the Andros phonostage, Zesto Audio debuted at Newport its Leto linestage. The all-tubed unit is based on a true balanced topology with transformer-coupled inputs and outputs. Two balanced and three single-ended inputs are provided, one of them with a “theater bypass” function. The front panel offers a balance control as well as a mono switch. The Leto uses two tubes per channel, the 12AU7 and 12AX7. This $7500 unit is handmade in the USA. The sound from the system, which included TAD CR-1 loudspeakers connected with WyWires cabling, was highly present, warm, and rich with great density of tone color.

Posted by:Paul Seydor in the avguide, June 11th, 2012

Not much new that I could see in phonostages, but Zesto Audio now has the Leto linestage ($7.5k) to match its Andros phonostage ($4k). The sound here was rich and bold with extraordinary imaging, especially the reproduction of depth. A Dynvector XX2 MkII ($1.95k) pickup mounted in a Tri-Planar tonearm ($5.8k) on a Merrill Williams REAL 101 ($7.2k) turntable furnished the source, while a Gamut D200 power amp drove the acclaimed TAD CR1 speakers (cabling by Wywires).



Stereophile logo

Zesto's new Leto line stage

By John Atkinson • Posted: Jun 7, 2012

Zesto was also using TAD CR1 speakers for the debut of their new Leto tubed line preamplifier ($7500, top), which, like the Andros phono stage (bottom), is made in the USA. With a system comprising a Gamut D200 power amp, a Merrill Williams turntable fitted with a Triplanar arm and a Dynavector XX2 Mk.II cartridge, a Lindemann DAC fed data from a PC running J River software, with WyWire cables used throughout, the Ozawa performance of Mahler's Symphony 1, with the Boston Philharmonic on a typically bright-sounding DG LP, had me sitting for the entire first movement, so low was the noisefloor and so high the dynamic range. AC power was being conditioned by Spiritual Audio's VX-9 power conditioner.



Confessions of a Part-Time Audiophile

Newport 2012: TAD, Zesto, WyWires

Posted on June 9, 2012

George and Carolyn Counnas of Zesto Audio were on hand and showing off something new — the Leto, their nifty $7,500 tubed preamp. If I were able to make something this pretty — and have it sound this good — I’d be pleased, too. The aesthetic should be familiar to show-goers as it follows the elegant, flowing lines of their $3,900 Andros PS1 phono stage, a unit that suddenly seems to be just about everywhere. I stayed for half an hour. And came back. Three times. I loved this room. LOVED it. The sound was rich and big and grand and totally inviting. Detail? Check. Immediacy? Check. Room filling? Check. Made me want to hang out all day? Checkcheckcheck. Read entire review




Reviewed by Paul Seydor - The Absolute Sound - April 2012

"Its sound is unbelievably smooth and velvety; harmonically rich, full, and vividly textured; marvelously rounded, tactile, and dimensional, with great body and solidity; and completely natural in its musicality and freedom from any of the usual sonic hype, audiophile style." Read entire reviews

2012 Buyers Guide to Vinyl Playback - The Absolute Sound
Read entire review scroll to page 80 and 103 for editors top picks.


Reviewed by Ray Seda - Dagogo - March 2012

"The sweetness and delicate nature of the Zesto Andros PS1’s delivery in the midrange and highs are almost counter-intuitive to its ability to also very competently amplify and deliver the sheer, explosive low frequency energy and dynamics that the record playback system sends to it." Read entire review



Highlights from the T.H.E. Show Las Vegas / CES
January 10th - 13th 2012 at the T.H.E. Show Las Vegas room #4024
Event Partners: WyWires, Lindemann,
Acoustic Fields

R1 Posted by: Robert Harley in the avguide, January 18th, 2012

Jonathan Valin later in this report describes having a rare “epiphany” in certain rooms, in which the system so totally disappears that the music seems to just exist independently of the hardware. I heard this in the Perfect8 Technologies/BAlabo room along with Jonathan, but also experienced it in the Zesto Audio room at T.H.E. Show at The Flamingo. The Zesto system included the company’s Andros PS1 phonostage, Avid Volvere turntable, Origin Live tonearm, Dynavector XV-1S cartridge, Lindemann electronics, and TAD Compact Reference loudspeakers, all connected by WyWires cabling with Acoustic Field room treatments. The system, put together by Zesto, Lindemann, and retailer Audio Revelation, was absolutely jaw-dropping in its presence and realism.

Robert Harley's Best of Show
Best Sound (cost no object)

The new Hansen E series (Emperor and Prince), TAD/Zesto/Lindemann, Wisdom LS4, Magico Q7 with MIT cable, Venture Ultimate Reference, Perfect8 The Point Mk. 2 driven by the incomparable BAlabo electronics, and Talon Phoenix driven by VAC all produced great sound, but if forced to choose just one system that was “the best of show” it would be the stunning MBL 101 X-treme. Read entire review



Reviewed by Michael Peshkin - StereoMojo - Jan 2012

"If you have a significant investment in vinyl and an analog front end that merits the best of the best phono preamps, you should by all means audition the Zesto Andros. At its price, its performance competes with much more expensive units. In appearance and sexiness, there’s nothing that comes close." Read entire reviews

Reviewed by Dr. John Richardson - StereoMojo - Jan 2012

"It’s physically beautiful, adaptable to many different cartridges by merely accessing the switches on the back panel, and most importantly, it will do real sonic justice to your valuable vinyl collection." Read entire reviews

Reviewed by John Fritz - StereoMojo - Jan 2012

"Owning a phonostage with state-of-the-art sonics? Wonderful! Owning one with balanced circuits and infinite adjustability? Outstanding! Having those adjustments not be tiny, cheap dip switches but high quality knobs and switches on the BACK so you don't have to open the case to make adjustments in real time? Amazing! Having it look like it belongs in a Museum of Modern Art? Unbelievable!"

Read entire reviews


B1 Robert H. Levi - Positive-Feedback Online - November 2011

"As a brand-new company whose first product is a made-in-America phono stage, Zesto has introduced a break-out product and brought to market a winner! Their Andros tube phono stage sports tons of flexibility with bold musicality at an unheard of price point for this level of performance. I am shocked by what they have managed to include for the audiophile under $4000! Plus, the Andros is a world beater in quietude, a wonderful attribute for a phono section. I wish more designers paid attention to this when they design phono stages, particularly tube designers.
I think that you will love the sense of reality the Andros delivers; in addition, the flexibility of its controls, all placed externally for a change, are similar to units costing $10,000. Soundstaging is extraordinary, too. The Andros both over-delivers and under-prices the competition. If you need a phono stage, I wouldn't wait for the price to go up on this beauty. It begs the question, why spend more than the cost of the Zesto Andros PS1? The Andros receives my highest recommendation and top-choice rating for a phono stage anywhere near this price!" Read entire review

Our Story

Fussy Can Be Good
I’ve loved music all my life – as a musician, record producer and audio engineer. That makes me fussy about sound. That’s a good thing.

If you want something done right…
Digital technology has its place, but true audiophiles know that for the truest, purest sound, nothing beats analog. As I returned “home” to the warm, wonderful world of vinyl, I looked for the gear that would deliver the highest fidelity. I wasn’t satisfied.
So I built my own.

Our Story
Vacuum tubes: everything old becomes new again
Vacuum tubes faithfully bring warmth and harmonic tonality like nothing else can.

As a young man in England, I designed vacuum tube circuits. I worked for DECCA Navigator -- at the time Britain’s largest electronics company -- as part of a research and development team designing airborne navigational systems for the Royal Air Force.

So I have many years of experience designing, creating and bringing to market high-end electronic equipment. The difference here is that no one’s life is at stake.

My quest for perfection
I started doing research on past tube designs going back to the original RCA circuits of the 1930’s. Those guys got a lot of things right, even though their tools were slide rules and trial and error.

Their “classic” designs were my starting point.

But I had the advantage of CAD software to simulate electronic circuits. Ah yes, the old and the new. But even with the engineering skill, history, technologies, in the end it’s designed by how it sounds, by ear.

The resisters are very quiet, the capacitors are transparent, and the transformers have minimal distortion. To make sure its visual aesthetics lived up to its sound, I had an industrial designer (Musky Mistry) and an artist (Carolyn Counnas) collaborate to create an elegant enclosure that’s built like a tank.

In the end, however, it is about what you hear. Hearing is believing.

-- George Counnas, President of Zesto Audio


How to Buy

Our USA Dealers

Audio Revelation Jay Kaufman, 760-434-2625, 4733 Edinburgh Dr., Carlsbad, CA 92010

A/V Solutions Jeff Whitlock, 925-425-0450, Pleasanton, CA

Wes Bender Studio NYC Wes Bender, 917-803-5488, Brooklyn, NY 11201

Elite Audio Michael Woods, 415-795-1149, 893-A Folsom Street, San Francisco, CA 94107

Galen Carol Audio Galen Carol, 210-805-9927, 7506 Tondre St., San Antonio, TX 78209 - 0562

Katli Audio Company Fred Katli 909-465-0222, 13908 Ravenwood, Chino Hills, CA 91709-1784

Sonare Coeli Nigel Bousfield, 715-412-4139, 1432 Foxfire Court, Waupaca, WI 54981

Sunny's Home Theater & Music Systems Sunil Merchant, 626-966-6259, 1370 E. Cypress Street Suite D, Covina, CA 91724

Sweet Spot Home Theaters & High End Audio Bill Coomes, 623-533-4433, 3696 North 159th Ave., Goodyear, AZ 85395

Viva HiFi Scott Dalzell, 703-304-8038, 2311 Concert Ct., Vienna, VA 22181

Please call the factory if you don't have a dealer near you 805-807-1841

For Australia Sales

Deep Hz Audio Peter Thompson , +0434-550782, Melbourne ,Australia,

For Brazil Sales

Avantgarde Audio Eduardo Rebelo de Souza, 55 (47) 3322-0305, Rua Sorocaba, 39 Blumenau – SC, Brazil 89012-110

For All Canadian Sales

Tri-Cell Enterprises Vince Scalzitti, 800-263-8151, 391 Harlan Rd, Unit 5, Vaughan, Ontario, L4L3T1, Canada

For China and Hong Kong Sales

Radar Audio Co. Michael Wong, +(852) 24182668, Hong Kong office, Showrooms Hong Kong and Kowloon,

For Greece and Cyprus Sales

Absolute Audio Vassilios Chatzakosi, +30 210 9955727, 26 Palamidiou Str., 16342 Llioupolis, Athens, Greece,

For Indonesia Sales

Audio Society, Bing Istanto, +62 818974000, Jln. Tulodong Bawah 6 /no. 44, Jakarta Selatan 12190 Indonesia

For Israel Sales

Maestro Audio Ofer Shchoni , +054-3160030, Golob 42, Givatayim 53464, Israel,

For Norway Sales

Audio Art Vidar Sonesen , +479777 1998, Sandbergvn 33, 4821 Rykene. Norway

For Philippines Sales

RAR33 Audio, Rafael Raymundo, +63 9178272715, 3 Taylor Street, Ayala Hillside Estates, Old Balara, Quezon City, Philippines 1100

For Singapore and Malaysia Sales

Horizon Acoustics LLP Mr. Poon KM, +65-91259149, 144 Upper Bukit Timah Road, 03-15 Beauty World Center, Singapore 588177

For South Africa Sales

The Listening Room Mike Blake, Durban: +031 584 7194, Shop 8 Equinox, 12 Millenium Blvd, Umhlaga Ridge, Also in Capetown, South Africa

For Spain/Portugal Sales

SoundSvilla Import SL Miguel Asencio, Spain: +0034 954 409150, Calle Sol de Invierno 27, 41020 Sevilla, Spain

For Taiwan Sales

Royal Asia Corporation T. Y. Fei, +886-2-25928760, 8F-1, No. 60, Ming-Tsu E. Road, Taipei 104, Taiwan, R.O.C

For Thailand Sales

Komfortsound Co., Ltd Sorapong Taechaaukarakul , 367 Onnut Road, Prawet, Bangkok 10250, Thailand

For Ukraine Sales

HIK Audio, Vladimir, +380-44-594-2578, Kiev, Ukraine



For All Other International Sales

Contact the factory directly
240V AC 50/60 Hz mains no additional charge

Contact us at

George for Engineering and Tech Support 805-807-1840

Carolyn for Sales and Marketing 805-807-1841

We are located in Thousand Oaks, California, USA. Factory hours 9 am and 6 pm PDT

Made in the USA