AUDIO-GD PRECISION 3S Balanced Class A Amplifier ACSS 2x 70W / 8 Ohm

AUDIO-GD PRECISION 3S Balanced Class A Amplifier ACSS 2x 70W / 8 Ohm

The PRECISION 3S Edition 2018 of Audio-GD is a power amplifier with a balanced Class A input and gain stage with a neat design that offers excellent audio performance.

  • Class A discrete entrance floor
  • 40,000μF of capacitors
  • 2x70W 8 Ohms and 2x15W under 40 Ohm (headphone)
  • 0.1 KOA resistors and WIMA capacitors

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AUDIO-GD Precision 3S

Power Amplifier / Class A / ACSS Input Stage

Audio-GD Precision 3S

An amplifier at the price quality ratio simply unbeatable ...

Audio-GD once again presents their prowess in terms of technology and electronic design with this Precision 3S amplifier with 100% discrete architecture

The famous brand of high fidelity audio offers us here an amplifier in the most accomplished form possible with outstanding performance:
It delivers 2x 70 under 8 Ohm and 2x15W under 40 Ohm (For headphones), being completely discreet.

The input stage is in Class A, without feedback on the ACSS input, and letting the DC into the RCA.
Built without OPA, no capacitors on the signal path.
The "Diamond Cross" output stage without negative feedback avoids crossover distortion, thus competing with Class A amplifiers.


  • 4 transistors of 150W / 15A each
  • Oversized transformer with 40,000μF NOVER filter
  • KOA 0.1% High Precision Resistors and WIMA Capacitors Separate Power / Amplification Section to Eliminate Electromagnetic Radiation

 

Each product of the brand is scrupulously tested from every angle with one of the most powerful systems in the world:
the Audio Analyzer 2700 Series from Audio Precision.

This power amplifier is the natural companion of the following AUDIO GD DAC preamps:
NFB 28.28, NFB29.28, NFB28.38, NFB29.38.

A simple connectivity, simply effective

The Precision 3S has 2 analog inputs: 1x RCA and 1x ACSS. The output is of course on 2 terminal blocks HP, where you just have to connect your speakers to enjoy.

The result is simple: great musicality, thanks to an exceptional dynamic and a rich sound extremely detailed in every respect.

Precision 3S Audio-GD

Mono XLR Bridgeable Mode to RCA or ACSS

The Mono bridge mode of the Precision 3S allows you to output 1X200W per block. It is imperative to have a pre-amplification with balanced outputs XLR classic or with a preamplifier DAC AUDIO GD series NFB . You just have to connect your speakers to enjoy as shown below. Nevertheless, it is necessary to use AUDIO GD proprietary modulation cables available here from XLR to RCA X4 or ACSS to ACSS X4 .

Audio GD Precision 3S bridge RCA


WIRING BRIDGE MONO preamp XLR to Precision 3S in ACSS



WIRING BRIDGE MONO XLR preamp to Precision 3S in RCA


It is also possible to bi-amplify the output of a DAC AUDIO GD NFB preamp in ACSS or RCA via a classic preamp:
CABLAGE BI-AMPLIFICATION ACSS to ACSS.
WIRING
BI-AMPLIFICATION RCA to RCA.

Do not forget to remove the straps on the speaker terminals.

A HiFi amplifier clean and doing more than his job

Class A Symmetric / ACSS

This Precision 3S is equipped with a high quality transformer, very high quality Nover capacitors, and very high performance MJL1302 / 3281 transistors for the output stage.

This amplifier is also designed around a purely symmetrical Class A ACSS discrete circuit, with separate power supply to avoid any interference or electromagnetic interference on the signal.

Audio-GD PRECISION-3
Class A Class A has the particularity of having its active components still in conduction. The quiescent current remains higher than the output current, lthus imitating harmonic distortion. The signal coming out of the Precision 3S is therefore of excellent quality, due to the absence of this famous crossing distortion of the alternations of the sinusoids.


ACSS Technology

Audio-GD has its own technological signature, called ACSS for "Audio-GD Current Signal System".
This technology allows a simpler and more direct input stage, reducing distortion.
Thanks to the expertise and know-how of the firm, this technology offers a less colorful sound, more detailed, and unparalleled neutrality.

ACSS

alue "> 1x RCA / 1x ACSS

Specifications
THD<0.003%
Output voltage25V
Gain25dB
Frequency response20Hz - 20kHz (at 0.5dB)
crosstalk<-100dB
inputs
Exits2x Stereo Speaker Terminals
Signal to noise ratio> 115dB
Output power2x70W under 8 Ohm / 2x15 under 40 Ohm (headphone)
Input sensitivity1.5V (RCA) / 2mA (ACSS)
Various
Consumption30W
Weight8kg
Housing material100% Aluminum
ColorBlack
Dimensions240x360x80mm
Accessories1x Power cable
 
Data sheet
InputACSS
InputRCA
OutputSpeaker terminal
ColorBlack
MaterialMetal
StructureAluminium
Channel2 channels (Stereo)
ClassClass A / AB
Total Power (W)50-100
Power (max)70W
 
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Average votes
4.9 / 5
10 reviews
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Note :
 5/5
Date :
un ampli de puissance au top !
J'utilise cet ampli pour alimenter un étage d'aigu sur des enceintes bi-amplifiées. Les tweeters sont des FOUNTEK Néo X3.0 à ruban.
Le rendu est d'une précision et d'une sobriété exceptionnelles, très loin de la surbrillance que l'on rencontre avec les amplis à lampes.
Ça me fait furieusement penser à mon vieil HIRAGA aux gros condensateurs rouges malheureusement hors d'usage aujourd'hui.
Une réalité rare ! Bravo!
 (0)
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This review has been posted for AUDIO-GD PRECISION 3S Balanced Class A Amplifier ACSS 2x 70W / 8 Ohm
Note :
 5/5
Date :
Cest la Precision et la chaleur de la musique!
Personne moi mon francais mais je suis italien et voilà..
L'amplificateur esthétiquement est vraiment fantastique, qualitè de construction impeccable, boite noir vraiment top, comme dimensions je l'avais imaginé un peu plus court mais bon c'est aussi facile a placer sur un table. Le son est vraiment dans le stile de la maison chinois, "warm", détaillée mais pas trop, coherent, image stereo bien salde et placee dans l'espace. J'oubliais mon hifi est: dac audio-gd 11.38, pre schiit audio Saga, ampli évidemment Audio-gd Precision 3s!

Service Audiophonics impeccable: 3 jours et l'ampli était chez moi en Italie! super!
 (0)
 (0)
This review has been posted for AUDIO-GD PRECISION 3S Balanced Class A Amplifier ACSS 2x 70W / 8 Ohm
Note :
 5/5
Date :
Ampli de puissance impressionnant
J'ai acheté le Precision 3S en décembre 2018 afin de l'écouter avec un préampli Audio GD NFB-1AMP, un lecteur CD/réseau Marantz ND8006 et des enceintes KEF R3.
Après avoir atteint une cinquantaine d'heure de rodage pour le Precision 3S comme pour les enceintes, je peux dire que cet achat est vraiment une réussite. Evidemment, le préampli et l'ampli de puissance de la même marque font des merveilles, mais avec les R3 c'est vraiment sublime.

Donc je mets 5 étoiles d'une pour la qualité de la marque Audio-GD et pour sa capacité à atteindre un rapport qualité prix assez hallucinant, et de deux, pour les conseils qui m'ont été donné par Audiophonics, et la rapidité de leur envoi.
 (0)
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This review has been posted for AUDIO-GD PRECISION 3S Balanced Class A Amplifier ACSS 2x 70W / 8 Ohm
Note :
 4/5
Date :
Petit rectificatif à mes précédents posts…
Après l'avoir testé sur des enceintes plus délicates à alimenter, ce Precision 3 avoue finalement assez vite ses limites.
Aussi, mieux vaut le réserver, si non bridgé, à des enceintes de 90dB mini et, si possible, d'une impédance moyenne supérieure à 4 ohm.
Sinon, les basses fréquences deviennent mal contrôlées, et la précision (!) générale régresse (baisse de netteté et de dynamisme).
 (0)
 (0)
This review has been posted for AUDIO-GD PRECISION 3S Balanced Class A Amplifier ACSS 2x 70W / 8 Ohm
Note :
 5/5
Date :
Précision 3
Bonjour
Commandé lundi reçu mercredi , merci .
j' ai remplacé mon ampli de puissance G&W classe A 2x 50w par le précision 3 ,
après quelques heures d' écoutes j'ai la même sonorité avec peut étre un

peu plus de basse , mais ce n' est que le début du rodage ( 100h d' après Audio GD )
Encore merci a Audiophonic pour leurs conseils .
 (0)
 (0)
This review has been posted for AUDIO-GD PRECISION 3S Balanced Class A Amplifier ACSS 2x 70W / 8 Ohm
 
AUDIO-GD PRECISION 3S Balanced Class A Amplifier ACSS 2x 70W / 8 Ohm
The PRECISION 3S Edition 2018 of Audio-GD is a power amplifier with a balanced Class A input and gain stage with a neat design that offers...

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