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FOSI AUDIO ZA3 Stereo / Mono Amplifier

This small, compact and powerful Fosi Audio ZA3 integrated amplifier has the particularity of being able to operate in both stereo and mono mode. It integrates two TI TPA3255 amplifier chips mounted in DIP8, enabling it to deliver power up to 2x150W or 1x240W @ 4Ω. It features a balanced stereo input on XLR in addition to its stereo RCA input, as well as speaker terminals and an active subwoofer output.

Average votes for this product
4.3 / 5
  Based on 10 customers reviews.

By buying this product you get 15 loyalty points


Reference : 18425
New product

159,90 €tax incl.

133,25 € tax excl.
Including 0,05 € for green tax

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Shipping date: 01-07-2025.

Orders placed before 12h (GMT+1) will generally be shipped the same day (working day).

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Facturation France
SAV France

2 Years warranty

Accessories for this product

Find here a selection of useful and/or essential accessories for this product. These are specially selected by the Audiophonics team according to the characteristics of the product.

 
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FOSI AUDIO ZA3

 Stereo / Mono Class D Amplifier TPA3255 2x150W 4 Ohm / 1x240W 4 Ohm

FOSI AUDIO ZA3 Stereo / Mono Class D Amplifier TPA3255 2x150W 4 Ohm / 1x240W 4 Ohm

This small, compact and powerful Fosi Audio ZA3 integrated amplifier has the particularity of being able to operate in both stereo and mono mode. It integrates two TI TPA3255 amplifier chips mounted in DIP8, enabling it to deliver power up to 2x150W or 1x240W under 4Ω. It features a balanced stereo input on XLR in addition to its stereo RCA input, as well as speaker terminals and an active subwoofer output. It also features a 12V trigger. This makes it versatile, offering you the possibility of numerous types of Hi-Fi installations integrating one or more Fosi Audio ZA3 amplifiers. Its power supply is DC, with a voltage range from 24V to 48V DC.

TI TPA3255 amplifier chips

Inside the Fosi Audio ZA3 is one TI TPA3255 chip per channel. This is what allows it to develop its high power, SNR greater than 106dB and THD at 0.006%.

FOSI AUDIO ZA3 Stereo / Mono Class D Amplifier TPA3255 2x150W 4 Ohm / 1x240W 4 Ohm

Quality components

The Fosi Audio ZA3 features high-quality components: German Weimar high-frequency filters, Omron relays, dedicated operational amplifiers for balanced input and subwoofer output, Japanese ELNA capacitors, etc.

As NE5532 AOPs are DIP8 mounted, they are easily replaceable to personalize your listening experience. The following AOPs are compatible: Sparkos SS3602, MUSES02, OPA2134PA , OP249, AD827, RM4558, LM4562, etc.

FOSI AUDIO ZA3 Stereo / Mono Class D Amplifier TPA3255 2x150W 4 Ohm / 1x240W 4 Ohm

FOSI ZA3 rear panel

FOSI AUDIO ZA3 Stereo / Mono Class D Amplifier TPA3255 2x150W 4 Ohm / 1x240W 4 Ohm
1XLR balanced stereo input
2RCA stereo input
3Subwoofer output
4Speaker terminals
5DC 24V-48V power supply
612V Trigger 

Technical characteristics

Specifications
Product typeIntegrated amplifier
Amplification chipTI TPA3255
Inputs1x RCA stereo input
1x XLR balanced stereo input
1x Trigger 12V on Jack 3.5mm
OutputsSpeaker terminals
Subwoofer output
Trigger
Input sensitivity0.775V
SNR≥ 106dB
Dynamic range≥ 106dB
THD0.006%
Frequency response20Hz-20kHz (±0.1dB)
Supported speaker impedance2-4-8Ω
Output powerMode stéréo : 2x 150W @ 4Ω
Mode mono : 1x 240W @ 4Ω
General
Power supply voltage24-48V DC
Dimensions155 x 184 x 51mm
Weight838g
ColorBlack
Package1x Fosi Audio ZA3 integrated amplifier
1x Power supply 48V DC 5A
 
Data sheet
InputXLR
InputRCA
OutputSpeaker terminal
OutputSubwoofer
ColorBlack
Channel2 (Stereo)
Channel1 (Mono)
ClassClass D / T
Amplifier chipTPA3255
Power (W)150.0
Remote ControlNo
 
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Average votes
4.3 / 5
10 reviews
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Note :
 4/5
Date :
le meilleur de fosi
achetés puis revendus pour fosi v3 mono, je regrette cet echange. Meme si v3 mono est plus propre sur le signal, le plaisir d' écoute( spacialisation, detail, relief) est bien meilleur sur les za3
 (1)
 (0)
This review has been posted for FOSI AUDIO ZA3 Stereo / Mono Class D Amplifier TPA3255 2x150W 4 Ohm / 1x240W 4 Ohm
Note :
 5/5
Date :
Incroyable à ce prix !!!
Vu les débats médiatiques sur cet appareil j’ai tenté l’achat pour un équipement de bureau. Je ne suis pas déçu du résultat avec des enceintes TRIANGLE COMÈTE 40TH.
Pour en savoir un peu plus avec un ami nous l’avons connecté et essayé sur du matériel beaucoup plus cher (chacun jugera de la qualité de ces appareils) Préampli ACCUPHASE enceintes B&W série 800 D4 câblage AUDIOQUEST dans une pièce de 35m2 et le résultat est tout simplement impressionnant au regard du prix.
Une écoute très naturelle sur tout les registres pas de limitation de puissance ressentie . Évidemment le niveau d’écoute était modéré mais suffisant.
L’amplification numérique c’est l’avenir. Je serai curieux de tester les blocs mon dans les mêmes conditions. Bonnes écoutes à tous. Philippe.
 (1)
 (0)
This review has been posted for FOSI AUDIO ZA3 Stereo / Mono Class D Amplifier TPA3255 2x150W 4 Ohm / 1x240W 4 Ohm
Note :
 3/5
Date :
Good for the money
For your information, I have thoroughly tested this device for a month with different OPAs and the result is that it is good for the money and for me personally only good for the near field listening with smaller speakers. It has a warm sound but with digital veil even with the Sparkos OPAs.
 (3)
 (3)
This review has been posted for FOSI AUDIO ZA3 Stereo / Mono Class D Amplifier TPA3255 2x150W 4 Ohm / 1x240W 4 Ohm
Note :
 5/5
Date :
Bien!
Super amplificateur. Un amplificateur de classe AB à 2000 euros, d'une marque réputée, a été vendu. Fosi ne lui était pas inférieur en qualité.

p.s. La qualité des basses dépend en grande partie de la qualité des enceintes et de leur connexion avec la pièce. La classe D gère très bien les basses.
 (4)
 (1)
This review has been posted for FOSI AUDIO ZA3 Stereo / Mono Class D Amplifier TPA3255 2x150W 4 Ohm / 1x240W 4 Ohm
Note :
 2/5
Date :
Pas si bien
Après les nombreux commentaires élogieux je m'attendais à mieux. Cet ampli est assez brouillon, les basses en retrait, un son de type numérique. Il est correct pour son prix, mais rien de miraculeux.
 (4)
 (8)
This review has been posted for FOSI AUDIO ZA3 Stereo / Mono Class D Amplifier TPA3255 2x150W 4 Ohm / 1x240W 4 Ohm
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