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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

Regular price $339.50 USD
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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





Note: ZA3 is now sold out at the Brazil warehouse, please do not place an order.
TIME:2025.10.2-2025.10.10
Fosi Audio ZA3 Stereo Power Amplifier TPA3255 Class D HiFi Audio Amp for Passive Bookshelf Speaker With XLR/RCA/Balanced Input
 
 
Highlight:
 
  • 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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