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Fosi Audio ZA3 Stereo Power Amplifier TPA3255 Class D HiFi Audio Amp for Passive Bookshelf Speaker With XLR/RCA/Balanced Input
Fosi Audio ZA3 Stereo Power Amplifier TPA3255 Class D HiFi Audio Amp for Passive Bookshelf Speaker With XLR/RCA/Balanced Input
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SPECIFICATIONS
Amplifier Chip: Texas Instruments TPA3255
Brand Name: Fosi Audio
Certification: CE
Channel: 2.0
Dy namic Range: ≥106dB
Feature: audio amplifier
High-concerned chemical: None
Highlight: Home Theater Amplifier
Input: RCA/XLR
Input Voltage Range: DC 24-48V
MAX Power Output: 155W*2 For 2 Channel, 235W for Mono
Maximum Power Per Channel: Above 200W
Model Number: ZA3
Origin: Mainland China
Output: Speaker Output+ Active Sub Out
Package: Yes
SINAD: 89dB
SNR: ≥106dB
Speaker Impedance Compatibility: 2-8Ω
THD: <0.006%
Type: Stereo Audio amplifier
feature: Stereo Power Amplifier
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.
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.
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.
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.
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:
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)
SINAD: 89dB
SNR: ≥106dB
Terminating Impedance: 2-8Ω
THD: 0.006%
Power Amp Chip: TI TPA3255
Op-Amp: TI NE5532 x2
Power Supply: 32V/5A, 48V/5A
Input Range: DC 24V-48V
Frequency Response Range: 20Hz-20kHz(±1.2dB)
Q1: What are the differences between the 32V power supply version and the 48V power supply version?
The 48V power supply offers higher output power and performance. If your budget allows, we recommend choosing the 48V power supply version.
Q2:Which op-amps are supported on the ZA3?




















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