ZESTO AUDIO ANDROS 1.2 (2ºMANO)

Diseñado para amantes de la música que exigen la máxima fidelidad de sus discos de vinilo

Para los verdaderos audiófilos, nada iguala la calidez, el rango dinámico y la fidelidad de los discos de vinilo. Un componente crítico de cada sistema de reproducción de Vinyl amantes de la música es el preamplificador Phonostage o Phono.

Por qué un Phonostage es tan importante

Cuando se realiza una grabación de vinilo, se reduce el volumen de los graves y aumentan los agudos. De lo contrario, el bajo cortaría una ranura demasiado grande para que un lápiz óptico se lea o para que la música se ajuste al registro. El phonostage invierte el proceso tomando la señal delicada de su cartucho y ajustándola para que los graves y agudos vuelvan a su volumen original. Este estándar común se conoce como theRIAAcurve.

Los Andros

Inspirado en los diseños de circuito de tubo de vacío de RCA de la década de 1930, el Andros ha sido diseñado para brindarte la claridad y profundidad de la grabación original. Sus agudos serán nítidos pero no excesivamente enfatizados, sus frecuencias medias claras y presentes sin ser chillonas y sus bajos llenos y firmes sin ser boomy.

Una sorprendente diferencia

A medida que pasamos las pruebas, nuestro panel de audiófilos se maravilló al escuchar sutiles matices, descubriendo cosas nuevas en las grabaciones que habían tocado muchas, muchas veces. Apreciaron su clara imagen estéreo con máxima separación de canales y mínima distorsión de fase.

Escuchar es creer

Las palabras son inadecuadas para la tarea de explicar a los Andros. Simplemente debes oírlo para creerlo.

¿Qué es Andros?

Andros es una isla griega, y el hogar de la familia de mi abuela.

Características principales

• El circuito está específicamente diseñado para proporcionar la amplificación suficiente para que coincida con su cartucho con el resto de su sistema.
• Cada unidad está hecha a mano "Made in the USA".
• 50 horas de fábrica quemada en todos los circuitos y tubos de vacío.
• Un bajo nivel de ruido de -75dBu por debajo de la salida máxima permite escuchar los pasajes más silenciosos de su música.
• El circuito de salida está diseñado para conducir sus cables y aísla la salida de la influencia de la siguiente etapa.
• Los conectores RCA son de alta calidad, chapados en oro, empotrados con una base aislada.
• Los conectores RCA de tierra aislados más el interruptor de conexión / desconexión de tierra le permitirán elegir la mejor configuración de tierra.
• Los conectores RCA empotrados son duraderos y soportan al audiófilo típico que adora cambiar su configuración.
• Todos los interruptores y perillas son de fácil acceso, no hay nada oculto dentro para ajustar.
• Interruptor MM de dos posiciones 47K y 15K Ohms para acomodar más cartuchos.
• Interruptor de carga MC de 10 posiciones de 20 a 1000 ohmios y más en el punto dulce por encima de 200.
• Acomoda cartuchos de salida MC alta y baja
• Recinto de acero de calibre 16 elegantemente diseñado para ayudar a aislar el "parloteo" electrónico de los equipos cercanos.
• Interruptor de encendido / apagado convenientemente montado en el panel frontal
• Tipo grande fácil de leer en el panel posterior

Especificaciones:

Entradas por canal

• Separar las entradas MM y MC
• Interruptor MM / MC
• Interruptor de impedancia MM 47K o 15K Ohms
• Capacitancia MM 200pf
• MC single terminada RCA con tierra aislada o XLR3F equilibrado
• Interruptor de encendido / apagado de tierra MC
• Impedancia de carga MC ajustable 1000, 800, 600, 500, 400, 300, 200, 100, 50, 20 ohmios
• MC Transformadores intensificadores internos
• Conmutador MC High / Low con ganancia de -6dB para cartuchos MC de alto rendimiento

Salidas por canal

Impedancia 10K ohmios
+ Nivel de salida máximo de 6V

Componentes activos

Cuatro (4) pasadores de oro JJ ECC83S / 12AX7 tubos de vacío con enchufes de cerámica de alta calidad pin pin

Power

• Poste de conexión a tierra
• Consumo de energía de 27 W, 0 drenaje cuando está apagado
• Voltaje 110 / 120V AC 60Hz
• Opcionalmente instalado en fábrica 220V o 230 / 240V AC 50 / 60Hz
• Conector de alimentación IEC estándar de 3 pines
• Interruptor de ENCENDIDO / APAGADO convenientemente ubicado en el lado frontal
• Dos fuentes de alimentación reguladas lineales internas de alta calidad, 250V y 12V

Especificaciones detalladas

• Obtenga una entrada MM de 47dB
• Gain MC input 67dB
• Ruido - 75dBu por debajo del nivel máximo de salida
• La respuesta de frecuencia cumple con la curva RIAA original dentro de + o - 0.5 dB
• La curva RIAA se logra utilizando un filtro pasivo
• 1% de resistencias de película metálica en todo
• Condensadores de polipropileno en toda la ruta de audio

Otras características

• "Hecho en EE. UU." Con piezas estadounidenses e importadas"
• Cada unidad está construida a mano
• 50 horas de fábrica quemada en todos los circuitos y tubos de vacío
• Dimensiones 17 "W X 12" D X 5 "H
• Peso 20 lbs.
• Recinto de acero zincado calibre 16
• Garantía limitada de dos años
• Seis meses de garantía en los tubos de vacío

ANDROS 1.2

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

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 theRIAAcurve.

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

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 -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

Power

• 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

Andros Phonostage "2013 Analog Product of the Year" Finalist

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

REVIEWS: 

The Best of the Best!   Andros 1.2 Phonostage
The 12th Annual PFO Writers’ Choice Awards for 2015 by Mark Pearson

“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. .”  Read about the award

Andros 1.2 Phonostage
Mark Pearson – Positive Feedback – August 11th 2015

“I have had lots of phono sections in my system(s) over the years, but I have never had one this good or this quiet.” Read entire review

 
Andros 1.2 Phonostage- Positive-Feedback Online – April 2015…..
Robert H. Levi

“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. ” Read entire review

 THE ABSOLUTE SOUND BUYER’S GUIDE TO ELECTRONICS 2015

Download the guide scroll to see Zesto Audio on pages 74, 75 and 76.

 
Zesto Audio Andros phono preamp
Stereophile gives the Andros Phonostage a 2013 Class A Rating
Michael Fremer – Stereophile Analog Corner – March 2013

“…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 …”

Andros Phonostage PS1
TONEAudio – September 2012 Jeff Dorgay

“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.”

Andros PS-1
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.”

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

Andros PS1
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.”

Andros Phonostage
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.”

Zesto Andros PS-1
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.”

Andros
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!”

COMPLATIBLE CARTRIDGE: