Zesto Andros II Tube Phono Stage, MM and MC

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Zesto Andros II Tube Phono Stage, MM and MC

Zesto Andros II Tube Phono Stage, MM and MC

$5,195.00 Free Shipping!

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Zesto Andros II Tube Phono Stage, MM and MC

$5,195.00 Free Shipping!

Free Shipping!
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  • Description

     

    MY TAKE: Designer George Counnas has a background in designing electronics for the pro audio industry and brings knowledge of building very low noise, extremely wide bandwidth electronics to the design of the Andros II phono stage. The all-tube design offers outstanding flexibility for setting both gain and loading and will accept both MM and MC cartridges. - Galen Carol

     

    Zesto Audio is pleased to announce their new product upgrade, the Energy Source Power Supply, named the ESP Supply available on three of their preamplifiers, the Andros II Phonostage, the Andros Deluxe II Phonostage, and the Leto Ultra II Preamplifier.


    George Counnas, President and design engineer of Zesto Audio says, “I named it the ESP Supply because it anticipates the energy needs of the music. This new ESP Supply unlocks the true potential of the circuit, so it is at ease and doesn’t have to work as hard. The music is more natural.”


    The biggest difference in the ESP Supply is the transformer changes from an “IE” to a Toroid design, this generates significantly less noise because it does a better job of concentrating the magnetic field. George says, “What I really like is how the ESP Supply allows the main circuit to have more music flow through it, with so much more detail. It also creates a livelier dynamic presentation, the quiet passages are quieter and louder passages have more punch. The sound quality is improved throughout the frequency spectrum, so you have better clarity on the bass, midrange, and highs evenly.”


    The ESP Supply is designed with bigger, fewer, and heftier parts, which delivers more power with improved reliability. The rugged design of the ESP Supply makes it more resilient to power surges.


    Technically, the improvements are impressive, such as the high voltage supply increases by 20%, from 250V to 300V to provide more headroom. The dynamic range opens up with increases from 90dBV to 122dBV depending on the model. Both the high and low voltage supplies provide more current, so it’s less restrictive to deliver more music. In the Phonostages, the Noise level is 5dBV quieter, which increases the black levels considerably.
     

    Why Vinyl Records -

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

    Why a Phonostage is So Important -

    When a vinyl record is cut, 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 phono stage 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.

     

    Key Features

    Specifications:

    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 ~ -3dB gain for high output MC cartridges

    Outputs per channel

    Impedance 10K ohms
    +8.5V max output level

    Active Components

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

    Power

    Newly designed internal power supplies using Toroidal transformers, 1 high voltage 300V, and 1 low voltage 12V
    Ground binding post
    Power consumption 24W , 0 drain when off
    Voltage 100 to 120V AC 60Hz
    Optional factory-installed 220V to 240V AC 50/60Hz
    Standard 3 pin IEC power connector
    ON/OFF power switch conveniently located on the front side

    Detailed Specifications

    Gain MM input 47dB
    Gain MC input 67dB
    Noise – 80dBv 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 resistors 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

     

    REVIEWS (PS1, PS 1.2):

    Positive Feedback: The Best of the Best!   Andros 1.2 Phonostage, The 12th Annual PFO Writers’ Choice Awards for 2015, “The Andros 1.2 just does everything right. It is dynamic, it has gorgeous tonal colors, it throws a big and deep soundstage, and it’s super quiet.” - Robert H. Levi


    The Absolute Sound: “The new Zesto Audio Andros 1.2 Phonostage Preamplifier clobbers the original, and may just be the best piece of audio gear designed by George Counnas to date.”

    Stereophile 2013 Class A Rating

    Stereophile: “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.” - Michael Fremer

     

    TONEAudio: “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.” - Jeff Dorgay

     

    The Absolute Sound: “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.” - Paul Seydor

    Dagogo: “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.” - Ray Seda

     

    StereoMojo: “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.” - Michael Peshkin

     

    StereoMojo: “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.” - Dr. John Richardson

    Positive-Feedback Online: “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!” - Robert H. Levi

     

    HiFi+: "Back when you could conceivably do such a thing, walking the halls of any audio show of size can be a bit exhausting. After three days and over one hundred rooms navigating the crowds and the noise (Good sound loud or not so good loud) can give your ears fatigue that makes one long for silence sometimes. For this reason, I tend to schedule a trip to the Zesto Audio room for the final day of a show. George and Carolyn Counnas always have a room of impeccable sound quality that, for me, is an audio oasis where my ears can recover. I had been hoping for the chance to have their gear in house.

    "Imagine my delight when the Zesto Audio Andros 1.2 tube Phonostage preamplifier arrived for review. The Andros 1.2 is crafted with the same graceful aesthetic as the rest of the Zesto line-up which is to say four glorious ECC83S gold pin tubes set in a reflective case that shows the glass off like jewelry. 

    The Phonostage Preamplifier occupies an interesting spot in an audio system. It is a pre-pre-amplifier. Matching it with the rest of a system is critical as it is amplifying the likely weakest audio signal in the systems chain. We hear the phrase, if the first watt is bad then more won’t help, well if the attenuation "of the first 0.2 is bad then the rest of your gear won’t matter either. It is important to find that component that offers synergy with the rest of your carefully chosen system. The flexibility of the Zesto Audio Andros 1.2 Phonostage Preamplifier provides a solid foundation for that compatibility. In addition, the high-quality hand-built assembly process offering audiophile-grade components and gold pin tube choice will add to the qualities of your results. From Moving Magnet to a wide range of Moving Coil cartridges the Andros 1.2 can accommodate most cartridge choices. The device itself is right-sized to allow a wide range of system placement and at 20 lbs. it will not break your back moving it around. Did I mention it is a visually beautiful unit? Great sound for listening and pride of ownership build quality and aesthetics make the Zesto Audio Andros 1.2 a must audition piece for your system and a reasonable price of $4,700." - Eric Neff


    SPECIFICATIONS:

    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 ~ -3dB 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

    Power

    • Ground binding post
    • Power consumption 27W, zero 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 resistors throughoutPolypropylene 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

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Zesto Andros II Tube Phono Stage, MM and MC

$5,195.00 Free Shipping!

Free Shipping!
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Description

 

MY TAKE: Designer George Counnas has a background in designing electronics for the pro audio industry and brings knowledge of building very low noise, extremely wide bandwidth electronics to the design of the Andros II phono stage. The all-tube design offers outstanding flexibility for setting both gain and loading and will accept both MM and MC cartridges. - Galen Carol

 

Zesto Audio is pleased to announce their new product upgrade, the Energy Source Power Supply, named the ESP Supply available on three of their preamplifiers, the Andros II Phonostage, the Andros Deluxe II Phonostage, and the Leto Ultra II Preamplifier.


George Counnas, President and design engineer of Zesto Audio says, “I named it the ESP Supply because it anticipates the energy needs of the music. This new ESP Supply unlocks the true potential of the circuit, so it is at ease and doesn’t have to work as hard. The music is more natural.”


The biggest difference in the ESP Supply is the transformer changes from an “IE” to a Toroid design, this generates significantly less noise because it does a better job of concentrating the magnetic field. George says, “What I really like is how the ESP Supply allows the main circuit to have more music flow through it, with so much more detail. It also creates a livelier dynamic presentation, the quiet passages are quieter and louder passages have more punch. The sound quality is improved throughout the frequency spectrum, so you have better clarity on the bass, midrange, and highs evenly.”


The ESP Supply is designed with bigger, fewer, and heftier parts, which delivers more power with improved reliability. The rugged design of the ESP Supply makes it more resilient to power surges.


Technically, the improvements are impressive, such as the high voltage supply increases by 20%, from 250V to 300V to provide more headroom. The dynamic range opens up with increases from 90dBV to 122dBV depending on the model. Both the high and low voltage supplies provide more current, so it’s less restrictive to deliver more music. In the Phonostages, the Noise level is 5dBV quieter, which increases the black levels considerably.
 

Why Vinyl Records -

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

Why a Phonostage is So Important -

When a vinyl record is cut, 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 phono stage 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.

 

Key Features

Specifications:

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 ~ -3dB gain for high output MC cartridges

Outputs per channel

Impedance 10K ohms
+8.5V max output level

Active Components

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

Power

Newly designed internal power supplies using Toroidal transformers, 1 high voltage 300V, and 1 low voltage 12V
Ground binding post
Power consumption 24W , 0 drain when off
Voltage 100 to 120V AC 60Hz
Optional factory-installed 220V to 240V AC 50/60Hz
Standard 3 pin IEC power connector
ON/OFF power switch conveniently located on the front side

Detailed Specifications

Gain MM input 47dB
Gain MC input 67dB
Noise – 80dBv 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 resistors 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

 

REVIEWS (PS1, PS 1.2):

Positive Feedback: The Best of the Best!   Andros 1.2 Phonostage, The 12th Annual PFO Writers’ Choice Awards for 2015, “The Andros 1.2 just does everything right. It is dynamic, it has gorgeous tonal colors, it throws a big and deep soundstage, and it’s super quiet.” - Robert H. Levi


The Absolute Sound: “The new Zesto Audio Andros 1.2 Phonostage Preamplifier clobbers the original, and may just be the best piece of audio gear designed by George Counnas to date.”

Stereophile 2013 Class A Rating

Stereophile: “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.” - Michael Fremer

 

TONEAudio: “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.” - Jeff Dorgay

 

The Absolute Sound: “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.” - Paul Seydor

Dagogo: “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.” - Ray Seda

 

StereoMojo: “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.” - Michael Peshkin

 

StereoMojo: “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.” - Dr. John Richardson

Positive-Feedback Online: “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!” - Robert H. Levi

 

HiFi+: "Back when you could conceivably do such a thing, walking the halls of any audio show of size can be a bit exhausting. After three days and over one hundred rooms navigating the crowds and the noise (Good sound loud or not so good loud) can give your ears fatigue that makes one long for silence sometimes. For this reason, I tend to schedule a trip to the Zesto Audio room for the final day of a show. George and Carolyn Counnas always have a room of impeccable sound quality that, for me, is an audio oasis where my ears can recover. I had been hoping for the chance to have their gear in house.

"Imagine my delight when the Zesto Audio Andros 1.2 tube Phonostage preamplifier arrived for review. The Andros 1.2 is crafted with the same graceful aesthetic as the rest of the Zesto line-up which is to say four glorious ECC83S gold pin tubes set in a reflective case that shows the glass off like jewelry. 

The Phonostage Preamplifier occupies an interesting spot in an audio system. It is a pre-pre-amplifier. Matching it with the rest of a system is critical as it is amplifying the likely weakest audio signal in the systems chain. We hear the phrase, if the first watt is bad then more won’t help, well if the attenuation "of the first 0.2 is bad then the rest of your gear won’t matter either. It is important to find that component that offers synergy with the rest of your carefully chosen system. The flexibility of the Zesto Audio Andros 1.2 Phonostage Preamplifier provides a solid foundation for that compatibility. In addition, the high-quality hand-built assembly process offering audiophile-grade components and gold pin tube choice will add to the qualities of your results. From Moving Magnet to a wide range of Moving Coil cartridges the Andros 1.2 can accommodate most cartridge choices. The device itself is right-sized to allow a wide range of system placement and at 20 lbs. it will not break your back moving it around. Did I mention it is a visually beautiful unit? Great sound for listening and pride of ownership build quality and aesthetics make the Zesto Audio Andros 1.2 a must audition piece for your system and a reasonable price of $4,700." - Eric Neff


SPECIFICATIONS:

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 ~ -3dB 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

Power

  • Ground binding post
  • Power consumption 27W, zero 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 resistors throughoutPolypropylene 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