Description
Fosi Audio ZA3 Balanced Stereo Amplifier
The Fosi Audio ZA3 Balanced Stereo Amplifier s a meticulously crafted high-performance balanced power amplifier designed with users’ needs deep in mind. It supports XLR balanced input, offering strong interference resistance and effective noise reduction capabilities.
Integrated with the high-end Texas Instruments TPA3255 Class-D amplifier chip, when powered by a 48V PSU and connected to 4Ω impedance speakers, it delivers a rated output power of 310 watts (155 watts per channel) in stereo mode and 235 watts in mono mode.
You can also pair two ZA3 amps to create a stereo system.
The ZA3 incorporates a side-vented perforated heat dissipation design, facilitating efficient air circulation and significantly enhancing heat dissipation performance. Internally, it integrates audiophile-grade capacitors, inductors, and resistors, ensuring stable output for high-fidelity audio.
Furthermore, the ZA3 boasts a replaceable op-amp design, enabling users to effortlessly roll between various op-amps to tailor their musical experience to individual preferences.
The ZA3 is a mini amplifier designed for audiophiles, and we believe it will take you on a delightful journey into the world of HiFi music.
View User Manual >> View Fosi Audio Products >>
Features
- PBTL Mono Mode Support
- XLR Input / 12V Trigger in
- Op-Amp Rolling: SS3602, MUSES02, OPA2134PA
- Replaceable Knobs: Black Knob
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.
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 human ear’s auditory characteristics.
What’s in the Box?
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: Speaker Output (supports banana plug or bare wire connection), Active Subwoofer Output
- 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
