The Zesto Audio Andros PS1
Vacuum Tube Phonostage Preamp

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

  • First
  • Previous
  • Pause or Play
  • Next
  • Last

See it and hear it at T.H.E Show Newport Beach June 1, 2 & 3, 2012, Newport Beach, CA

Read entire review from Paul Seydo r- The Absolute Sound- April 2012

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 stylist 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 PS1
Inspired by RCA’s vacuum tube circuit designs from the 1930s, the Andros PS1 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 PS1. You simply must hear it to believe it.

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 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.
  • 8 position adjustable MC load switch from 20 to 1000 Ohms 
  • Accommodates both high and low MC output cartridges
  • Elegantly designed 16 gauge steel enclosure to help isolate the electronic “chatter” from nearby equipment.
  • Award winning Isonode anti-vibration feet
  • On/Off power switch conveniently mounted on front side panel
  • Easy to read large type on back panel

Email Newsletter icon, E-mail Newsletter icon, Email List icon, E-mail List icon Sign up for our Email Newsletter
For Email Marketing you can trust
 

 

 

 

News and Links

TAS 2012 Editors choise award
Editor's Choice Award received January 2012

Vist us at our next show T.H.E. Show Newport Beach June 1st - 3rd 2012 room #524
Show Partners: WyWires,TAD,
Merrill Williams Audio, Tri-Planar
also showing in room #1011 One World Audio, #529 George Warren Precision Sound & #417 Fritz Speakers

 

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 review


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

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

 

Stereomojo


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 review

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 review

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 review

 

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

 

Highlights from the Rocky Mountain AudioFest
October 14 -16, 2011, Denver, CO
Event Partners: WyWires, Fritz Loudspeakers, ModWright Instruments

 

Stereophile logo

The Zesto Audio Andros PS1 Phono Stage

By John Atkinson • Posted: Oct 20, 2011

Zesto Audio was a name new to me, but their versatile Andros PS1 tubed MM/MC phono stage ($3900) was getting great sound from Billie Holiday's "Day In, Day Out," played on a Thorens TD309 player ($1900) fitted with a Dynavector DV-20X2L cartridge ($850). The rest of the system comprised a ModWright LS 100 tube preamp ($3495) and ModWright KWA 150 solid-state amplifier driving Fritz Carbon 7, Rev.5 speakers ($1795–$1950/pair), wired with WyWires.

 

 


by James L. Darby - Publisher - StereoMojo

Great turntables need great Phono Preamps and this new entry from Zesto
looks and sounds like it could be a real winner. We certainly can't think of a more beautiful looking phono pre.

THE ANDROS PS1

As impressive as it looks from the front, when we turned it around and saw the stunning rear panel
and its comprehensive, easily accessible controls, we were mightily impressed.
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 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.
8 position adjustable MC load switch from 20 to 1000 Ohms
Accommodates both high and low MC output cartridges
Elegantly designed 16 gauge steel enclosure to help isolate the electronic “chatter” from nearby equipment.
Award winning Isonode anti-vibration feet
On/Off power switch conveniently mounted on front side panel
Easy to read large type on back panel
Price is an impressive $3,900.
Again, we have been chosen to do the world's first review of this new product. It is actually on its way to us right now

 

Highlights from the California Audio Show
July 15 - 17, 2011, Burlingame, CA California Audio Show
Event Partners: WyWires, Fritz Loudspeakers, ModWright Instruments, Lindemann


Report By Clarke Robinson
Zesto room was rated #2 of the top 5 rooms at The Cal Audio Show

Four friends, each the owner of a small (one person, in most cases) audio company, all showing together to split the cost of the room. The result? One of the most nicely balanced rooms of the show.

It all stared with a Thorens TD 309 turntable going in to the Zesto Audio Andros PS1 Vacuum Tube Phonostage Preamp ($3900), one of the most full-featured phono preamps I've ever seen. Then on to the ModWright LS 100 tube preamplifier ($3495) and KWA 100SE power amplifier ($3995), and all held together with WyWires cables, custom designed with special attention low capacitance and high bandwidth (ranging in price from $849 to $1299). Finally, Fritz Loudspeakers Carbon 7s ($1750) brought Ella Fitzgerald, Louis Armstrong, and Steely Dan out in to the room in a way that made listening irresistible. Somehow a pair of Carbon 7s followed me home from the show...watch for a full review soon.

Smooth highs, enchanting midrange, and bass that, while it didn't flap my pant legs, wasn't missing, either. All in all, a well sorted audio system that made listening a joy.

Read entire article

 

Easy on the Eyes and Ears: Fritz Speakers, ModWright, Zesto, Thorens, WyWires

By Stephen Mejias • Posted: July 19, 2011
The attractive Fritz Speakers Carbon 7 ($1750/pair) were matched with ModWright KWA 100SE power amplifier ($3995), ModWright LS 100 tube preamplifier ($3495), Esoteric SA60 universal disc player ($4995), Zesto Audio Andros PS1 MM/MC phono stage ($3900), and Thorens TD 309 turntable ($1900). WyWires provided the speaker cables ($1299), interconnects ($849-$1299), and power cords ($329). Room treatment was by GIK Acoustics and ASC. Steve Blinn Designs contributed the equipment rack ($1899). Billie Holiday’s Songs for Distingué Lovers (priceless) provided the mood.

The two-way, reflex-loaded Fritz Carbon 7 has a claimed 87dB sensitivity and 8 ohm nominal impedance. They use a 7” carbon-graphite-fiber/paper-pulp composite cone and a 1.1” soft-dome tweeter. The Zesto Andros phono preamp has a distinct 16-guage steel enclosure and uses four ECC83S vacuum tubes. All WyWires cables are customized to your system and made in the US.

The sound here seemed well-balanced and tonally correct from top to bottom with a fine sense of rhythm and pace. Very easy on the eyes and ears, just the way I like it.

 

 

Highlights from T.H.E Show Newport Beach
June 3rd, 4th & 5th 2011 at the T.H.E. Show Newport Beach
Event Partners: WyWires, Fritz Loudspeakers, ModWright Instruments

Alive and Kicking: Report from T.H.E. Show Newport Beach
Robert Harley

"A more straightforward approach to vinyl playback was embodied in the Andros PS1 tubed phonostage from newcomer Zesto Audio. The PS1 offers separate mm and mc inputs, up to 60dB of gain, and a wide range of cartridge loading via rear-panel trimmers and balanced inputs. I’m surprised that more phonostages don’t offer balanced inputs considering that a phono cartridge’s output is inherently balanced. The hand-built Andros PS1 is available through dealers or factory direct for $3900"

ZA THE Show

Zesto Audio founder and designer George Counnas
shows off the tubed Andros phonostage.
Robert Harley, Editor-in-Chief for The Absolute Sound (left)
with George Counnas, President Zesto Audio

 



Bob Levi (left), President of the LAOC Audio Society. George Counnas (center) and Mel Jay (right), VP of the LAOC Audio Society

 

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.


Vacuum tubes: everything old becomes new again
Vacuum tubes faithfully convert the delicate signal from my turntable and 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 phonostage designs going back to the original RCA circuits of the 1930’s. These 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.

Voila! Here’s my baby!
One year later, after 71 circuit revisions with hundreds of component upgrades, I have a phonostage that I am proud to put my name on. It gives me joy to listen to music.

The Andros PS1 Phonostage is my baby. I compromised on nothing.

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, the Andros PS1 is about what you hear. Hearing is believing.

-- George Counnas, President of Zesto Audio

 

 

Specifications

Inputs per channel

  • Separate MM and MC inputs
  • MM/MC switch
  • MM impedance 47K Ohms
  • MM capacitance 100pf
  • MC Unbalanced ground isolated RCA or Balanced XLR3F
  • MC ground on/off switch
  • MC load impedance adjustable 1000, 400, 200, 100, 50, 40, 30, 20 Ohms
  • MC Internal step up transformers
  • MC High/Low switch with -10 dB gain for high output MC cartridges

Outputs per channel

  • Impedance 10K ohms
  • -10 dB Vu output level

Active Components

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

Power

  • Ground binding post
  • Power consumption 27W , 0 drain when off
  • Voltage 110/120V AC 60Hz, (optional factory installed 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 45dB
  • Gain MC input 65dB
  • Noise - 75dBu
  • 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 steel enclosure
  • Award winning Isonode anti-vibration feet
  • Two year limited warranty
  • Six months warranty on Vacuum Tubes

Retail price $3900

 

 

 

 

 

How to Buy

Our Dealers

Ambience Audio
Contact: Steve Rouse
860-456-7744
36 Watson St., Willimantic, CT 06226

jazdoc@charter.net

Audio Logic Online
Contact: Kevin Saffari
888-356-4061
Irvine, CA 92620

kevin@audiologiconline.com

Audio Revelation
Contact: Jay Kaufman
760-944-0444
2630 Pirineos Way #24, Carlsbad, CA 92009 (by appointment)
jay@audiorevelation.com

A/V Solutions
Contact: Jeff Whitlock
925-425-0450
Pleasanton, CA
info@avsolutionsca.com

Brooklyn Audio
Contact: Jody Crane
902-463-8773
Dartmouth NS, Canada
jody.crane@ns.symatico.ca

Elite Audio
Contact: Michael Woods
415-285-7645
966 Minnesota Street, San Francisco, CA 94107
mike@eliteaudiosf.com

Galen Carol Audio
Contact: Glen Carol
210-805-9927
7506 Tondre St., San Antonio, TX 78209 - 0562
galen@gcaudio.com

Goodwin's High End
781-893-9000
899 Main Street, Waltham. MA 02451
paul@GoodwinsHighEnd.com

Sonare Coeli
Contact: Nigel Bousfield
715-412-4139
1432 Foxfire Court, Waupaca, WI 54981
nigel.b@prodigy.net

Sounds Real Audio
Contact: Jim Riddell
303-278-2780
Golden, CO
jim@soundsrealaudio.com

Superior Sight & Sound
Contact: Steve Sinkoff
248-626-2780
6266 Pinecroft Drive, West Bloomfield, MI 48322
soundsuperior@hotmail.com

Tone of Music Audio
Contact: Tim Nguyen
415-860-6818
San Fransisco, CA 94114
tim@toneofmusic.com

Wes Bender Studio NYC
Contact: Wes Bender
917-803-5488
Brooklyn, NY 11201
wes@wesbenderstudionyc.com

For International Sales

Factory direct with 240V AC 50/60 Hz mains

Contact us
805-807-1841 carolyn@zestoaudio.com

Email Newsletter icon, E-mail Newsletter icon, Email List icon, E-mail List icon Sign up for our Email Newsletter
For Email Marketing you can trust
 

 

 

 

 

Contact Us

George for Engineering and Tech Support 805-807-1840 george@zestoaudio.com

Carolyn for Sales and Marketing 805-807-1841 carolyn@zestoaudio.com

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

Made in the USA
Using USA and imported parts

Email Newsletter icon, E-mail Newsletter icon, Email List icon, E-mail List icon Sign up for our Email Newsletter
For Email Marketing you can trust