Zesto Audio Andros Deluxe II Phonostage



The Andros Deluxe Has Been Replaced by the Andros Deluxe II.

ESP Supply Upgrades Available For Your Andros Deluxe.

One of our reference phonostages at Big Ear, available for audition.

Out of stock

Design Philosophy

The Andros Deluxe Phonostage is created from taking the very best attributes from both the Andros 1.2 Phonostage and the Andros Tessera Phonostage while maintaining its own unique sonic personality. We wanted the same footprint as the Andros 1.2 and many of the internal features of the Tessera.

What’s Unique?

A unique feature of the Andros Deluxe is the use of the 12DW7 tubes in the output circuit. The 12DW7 tube is half a 12AX7 and half a 12AU7. We use the 12AU7 half to drive the output transformers because it is high current and low noise, thus allowing for the most frequently requested feature, a true floating ground balanced output.

It’s Quiet, Really!

The extensive grounding scheme, the circuit design and steel enclosure all play a significant role in the noise reduction of the phonostage, so you can hear the quietest passages in your music.

Circuit Topography

The heart of the design is the new main circuit incorporating the same large beefy MC step-up transformers as the Tèssera, as well as an entirely new output circuit to drive the balanced output transformers. The Andros Deluxe is built with a passion for Analog, designed with 100% tube circuitry and no solid state devices anywhere in the signal path.

Why Andros?

Andros is a Greek island and the home of George’s grandmother’s family. Andros is now the name of the Zesto phonostage family.

Key Features

  • The high quality built in MC step-up transformers are designed for better phase linearity. They are also large enough to accommodate all the extra windings and the Mu-metal shielding that reduces noise. This translates to better stereo imaging.
  • Independent ground switches affect both the MC-XLR and the MC-RCA inputs and reduce or eliminate hum by breaking those pesky ground loops.
  • Balanced transformers reduce noise in two ways, by providing a true differential signal and allowing the ground to float, making the noise level very low.
  • The MM-RCA connectors are always grounded to reduce noise from your cartridge.
  • The dedicated output transformers are driven by the 12DW7 output tubes providing an accurate balanced signal to your preamp.
  • The output RCA connectors have a floating ground and the XLR are grounded to reduce ground loops.
  • The tube compliment is a pair of gold pin, high gain, low noise 12AX7’s and a pair of gold pin, high current, low noise 12DW7’s.
  • Dual mono circuit which creates better stereo separation.
  • A low Noise level of -80 dBv below maximum output allows the quietest passages of you music to be heard.
  • 10 position MC load 1000, 800, 700, 600, 500, 400, 300, 200, 100, 50 Ohms so you can dial in the best match for your cartridge.
  • Easily adjustable MC “Load on the fly” without clicks or pops so you can hear the change.
  • The gain switch applies to both MC and MM inputs, to better match your cartridges.
  • 100% Analog tube circuitry without any solid state devices in the signal path, because tubes are inherently more musical.
  • All the RCA and XLR connectors are Gold plated for better conductance and lower corrosion.
  • 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.
  • Each unit is hand built “Made in the USA”
  • 50 hour factory burn in on all circuits and vacuum tubes
  • Elegantly designed 16 gauge steel enclosure to help isolate the electronic “chatter” from nearby equipment



  • Two inputs, one MM and one MC
  • MM Single Ended RCA input
  • MM impedance 47K Ohms
  • MM capacitance 220pf
  • MC transformer Balanced XLR input
  • MC transformer Single Ended RCA input. Only one MC input can be used at a time
  • 2 independent MC ground lift switches
  • All input connectors are gold plated
  • 10 position MC load impedance:1000, 800, 700, 600, 500, 400, 300, 200, 100, 50 Ohms
  • 2 Superior quality MC Internal step up transformers
  • 2 position gain switch for High & Low output cartridges
  • One ground binding post

Outputs per channel

  • High quality output transformers driven by dedicated 12DW7/ECC832 output tubes
  • True floating ground, transformer Balanced XLR gold plated outputs
  • Single Ended gold plated RCA output, with isolated ground
  • Impedance 150 Ohms
  • +9 V max output level

Active Components

  • Two (2) Gold pin JJ ECC83S/12AX7 vacuum tubes with high quality gold pin ceramic sockets
  • Two (2)  JJ ECC832/12DW7 vacuum tubes with high quality gold pin ceramic sockets


  • Newly designed internal power supplies using Toroidal transformers, 1 high voltage 300V and 1 low voltage 12V
  • Power on red LED
  • ON/OFF switch on left side of unit
  • Power consumption 30 Watts
  • Standard 3 pin 15A IEC power connector
  • Voltage 100 to 120V AC 60Hz
  • Optional factory installed 220V to 240V AC 50/60Hz

Detailed Specifications

  • 2 position Gain switch
  • Gain MC input 63 dB and 68 dB
  • Gain MM input 45 dB and 50 dB
  • Noise – 90 dBv 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
  • No negative feedback
  • 1% metal film resisters throughout
  • Polypropylene capacitors throughout the audio path
  • All analog tube circuitry with no solid state devices in the signal path

Other Features

  • Controls on the rear
  • “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 main chassis 17″ W X 12″ D X 5″ H (43cm X 30.4cm X 12.7cm)
  • Weight 21 lbs (9.53 Kg)
  • Shipping weight 24 lbs (10.89 Kg), box 21″ X 21″ X 11″ (53cm X 53cm X 28cm)
  • 16 gauge zinc plated steel enclosure
  • Two year limited warranty
  • Six months warranty on Vacuum Tubes


Andros Deluxe II Phonostage Review with the NEW ESP Supply

The Zesto Audio Andros Deluxe II Phono Stage is extraordinary and mellifluous. It is, I believe, the best component developed and manufactured by Zesto to date, whether you buy it new or have it updated. I have never heard a finer phono stage at any price in my reference systems or anywhere else. I would give it top honors if it were merely a black box but that is far from the case. It has industry-setting control flexibility allowing maximum impedance tuning and circuit attachment of any phono cartridge now known or otherwise devised. Not inexpensive, but certainly high-value, the Deluxe II is a logical and easy leap for the phono devotee. You can pay a lot more and not receive a whit extra in musical reproduction or flexibility.

The Zesto Audio Andros Deluxe II Phono Stage receives my highest recommendation. It is an outstanding and stunning work of audio art.
Click Here to Read the Full Article from Positive Feedback


World Premiere Review:  Andros Deluxe Vacuum Tube Phonostage from Zesto Audio

“The Andros Deluxe Vacuum Tube Phono Stage from Zesto Audio is one of five, or maybe six, top phono stages I have ever auditioned. With its ultra-black background, excellent flexibility, and suave presentation, it is exactly the kind of phono stage that floats my boat. I am sure it is one of two or three tube phono stages that clearly compete for gain, definition, quietness, and neutrality, compared to the multi-box solid state beasts roaming the planet right now in the mega-buck price range.

George Counnas is as clever as he is a genius. The Andros Deluxe, with its unique tube selection, clearly produces the passion contained in the musical performance itself. The Deluxe belongs at the top of your short shopping list now, and for years to come.”

Bob Levi | Positive Feedback | Nov. 26, 2018

Click Here to Read the Full Article from Positive Feedback

ESP Power Supply

Customer testimonial

“When I was told that Zesto was upgrading the Andros 1.2 to the Andros II I was intrigued but really didn’t think there would be much difference to warrant an upgrade. Wow, was I wrong! Jeff from Reference Analog, in Oklahoma, brought over the new Andros II so we could do a side by side comparison. It was not a subtle change. As soon as the music started the difference between the two was immediate. The sound stage was wider and cleaner and the lower end had more punch and control. If you have heard the Andros before I know that statement is hard to believe. I have never heard an update to a component make this much of a difference. Jeff did not leave with the Andros II. Great Job Zesto!”

Clifton L. – Happy Customer – September 2020

What is the ESP Supply?

Click here for ESP Supply comparison specs

(Energy Source Power Supply) We named it the ESP Supply because it anticipates the energy needs of the music. The new ESP Supply unlocks the true potential of the circuit, so it is at ease and doesn’t have to work as hard. It allows more music to flow through with more detail. It also creates a more dynamic presentation, the quite passages are quieter and louder passages have more punch. The sound quality is an improvement throughout the frequency spectrum, so you have better clarity on the bass, midrange and highs evenly.

Here are the top 8 improvements:

  1. The transformer changes from an IE to a Toroid design, which generates significantly less noise because it does a better job of concentrating the magnetic field.
  2. The high voltage increases by 17% from 250V to 300V which provides more headroom.
  3. Dynamic range opens up with increases from  90dBV to 122dBV depending on the model.
  4. The ESP Supply is designed with bigger, fewer and heftier parts, which delivers more power with improved reliability.
  5. The rugged design of the ESP Supply makes it more resilient to power surges.
  6. Both the high and low voltage supplies provide more current, so it’s less restrictive to deliver more music.
  7. Maximum output level before clipping is increased up to 3V RMS, depending on the unit to allow more punch.
  8. In the Phonostages, the Noise level is 5 dBV quieter, which increases the black levels considerably.