FOSI AUDIO ZA3 Stereo / Mono Amplifier

FOSI AUDIO ZA3 Amplificateur Stéréo / Mono Class D 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 @ 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

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Reference : 18425
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149,00 €tax incl.

124,17 € tax excl.
Including 0,05 € for green tax

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Shipping date: 21-05-2024.

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

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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, LME49720HA, 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
InputRCA
InputXLR
OutputSubwoofer
OutputSpeaker terminal
ColorBlack
Channel1 (Mono)
Channel2 (Stereo)
ClassClass D / T
Amplifier chipTPA3255
Power (W)150.0
Remote ControlNo
 
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Average votes
4.3 / 5
8 reviews
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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.
 (0)
 (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 :
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.
 (1)
 (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.
 (1)
 (4)
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 :
The Fosi ZA3 is absolutely great if you consider the price tag.
The Fosi ZA3 is absolutely great if you consider the price tag. The build quality is very good and I also like the minimalistic design. The orange power/volume knob and the orange dust covers in the side ventilation are nice details. Inside are mainly components of pretty good quality. One little "complaint" is that I find the volume potentiometer a bit coarse in the low range. That means a small adjustment results in relatively large volume increase.
I use it at home in my setup for the first floor and I also bought it to take with me if I stay in a vacation home for instance. I "need" a certain minimum level of sound quality and these homes in general just have a TV to play music or a very poor stereo. I take my Fosi ZA3, a set of Eltax Monitor 3 speakers and a raspberry Pi with a DAC board on top. In this compact setup the ZA3 does it's job very good in terms of sound quality.
 (0)
 (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 :
Nice little Class D amplifier
I'm really satisfied with Fosi Audio ZA3 stereo Class D amplifier. It is very flexible and capable amplifying solution.
For the price I don't have any remarks.
My recommendation for further improvements in SQ domain is to use more quality OPAs (e.g. Sparkos).
 (0)
 (0)
This review has been posted for 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...

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