Description
Fosi Audio ZA3 – 2 Channel Balanced Stereo Amplifier Mono Amp With TPA3255 Chip
Amplifying Your Voice, Shaping Our Innovation
At Fosi Audio, behind every innovation, there’s a story. The birth of the ZA3 amplifier is just such a story, centered around our users. After the launch of the V3 amplifier, we gathered innumerable feedback from passionate audiophiles. They expressed a desire for us to develop an even better amplifier based on V3.
Input: RCA, XLR, ¼” TRS; Output: Stereo, Mono
SNR≥106dB; THD<0.006%; SINAD: 89dB; Frequency Response: 20Hz-20kHz (±0.1dB)
Rated Power Output: Stereo 180W*2 @4Ω; Mono 235W @4Ω
12V Trigger Sync Interface
Smooth synchronization with other devices for easy one-click power management, unifying your audio system’s operation. (Please use a 3.5mm stereo trigger cable for the trigger input on the ZA3. It must be noted that it takes several seconds for the trigger to activate the ZA3.)
Aluminum Alloy and One-Piece Molded Chassis
Delicate sandblasting and smooth beveled edges, exuding a premium, exquisite texture and high-end appeal.
Logarithmic Potentiometer
Helps to achieve a fine volume tuning to match the human ear’s auditory characteristics.
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 the 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
|
Chip Set
|
Texas Instruments TPA3255 |
|---|---|
|
Output Power
|
With 48V/5A PSU Stereo; 155Wx2 @4Ω; Mono: 235Wx1 @4Ω With 32V/5A PSU Stereo; 95Wx2 @4Ω; Mono: 110Wx1 @4Ω |
|
Terminating Impedance
|
2-8Ω |
|
Input Mode
|
RCA, XLR, 1/4″ TRS |
|
Output Mode
|
Output Mode |
|
Frequency Range
|
20Hz – 20KHz(±0.1dB) |
|
SINAD
|
89dB |
|
THD:
|
＜0.006% |
|
SNR
|
≥106dB |
|
Dynamic Range
|
≥106dB |
|
Device Dimension
|
15.49 x 18.39 x 5.08 cm; 1.78 Kilograms |
|
DC Input Range
|
24-48V |
|
Power Supply
|
32V/5A, 48V/5A |
