Fosi Audio ZA3 Stereo Power Amplifier TPA3255 Class D HiFi XLR/RCA/Balanced Audio Amp for Passive Bookshelf Speaker With 32V PSU
Original price was: $277.99.$135.99Current price is: $135.99.
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Dual-Mode Innovation: This new generation mini amplifier offers both stereo and mono modes, adapts flexibly to your diverse needs, allowing seamless mode switching. In stereo mode, it delivers a robust output of up to 180W, while in mono mode, the power soars to a maximum of 235W. Pair two ZA3 units in mono configuration to create a powerful audio system, significantly enhancing your listening experience.
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Richer Connectivity: Debut amplifier with balanced input and trigger in, the ZA3 features a balanced combo audio signal input connector supporting both XLR and 1/4″ TRS plugs. This design minimizes interference and reduces noise floor. The 12V trigger-in connector enables synchronization with other devices, streamlining the process of turning on/off without individual operations.
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Audiophile-Grade Components: The ZA3 features the TPA3255 high-end Class-D amp chip and utilizes premium Japanese NCC, ELNA, and German WIMA capacitors, and Japanese Sumida inductors for exceptional audio quality. With a SINAD rating of up to 89dB, an SNR of up to 106dB, and a low noise floor of only 150μV, it delivers exceptional clarity and low distortion.
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Advanced Heat Dissipation: Based on V3’s groundbreaking heat dissipation design, we upgraded ZA3’s cooling system by featuring a larger chassis, moving vents to the sides, and adding dust covers to achieve better ventilation for a sustained and stable high power output.
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Enhanced Scalable Fun: Personalize your audio experience with the op-amp rolling feature! The ZA3 stocks five swappable op-amps for left and right channel outputs, balanced input, and subwoofer output. Experiment with compatible DIP8 dual op-amps such as Sparkos SS3602, MUSES02, OPA2604, OPA2134PA, OP249, AD827, RM4558, LM4562, LME49720HA, etc. to fine-tune your sound to perfection.
Specifications:
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Max Power Output:
180Wx2 @4Ω Stereo(with 48v power supply)
235W @4Ω Mono(with 48v power supply)
95x2W @4Ω Stereo(with 32v power supply)
110W @4Ω Mono(with 32v power supply)
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SINAD: 89dB
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SNR: ≥106dB
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Terminating Impedance: 2-8Ω
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THD: 0.006%
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Power Amp Chip: TI TPA3255
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Op-Amp: TI NE5532 x2
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Power Supply: 32V/5A, 48V/5A
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Input Range: DC 24V-48V
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Frequency Response Range: 20Hz-20kHz(±1.2dB)
Package Include:
*ZA3 Power Amp *1
*32V Power Adapter*1
*User Manual *1






















| Weight | 20 lbs |
|---|---|
| Dimensions | 6 in |
| Brand Name | Fosi Audio |
| FOSI AUDIO Model | zd3 |
| High-concerned chemical | None |
| Maximum Power Per Channel | Above 200W |
| Origin | Mainland China |
| Channels | 2 |
| Parts | Adapter |
| Certification | CE |
| Model Number | ZA3 |
| Package | ZA3 with 32V power supply |















Customer –
Excellent.
S***n –
1/2 the price as amazon and works great!
s***x –
Lightning-fast delivery
Customer –
Thanks 👍
A***s –
Fast delivery will test it