Fosi ZA3 Balanced Stereo Amplifier
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Introducing the Fosi ZA3, a sophisticated advancement in balanced amplification technology. This dual-mode Class-D powerhouse represents Fosi Audio's evolution, crafted in response to audiophile demands for enhanced performance beyond the acclaimed V3 model. Engineered to deliver exceptional versatility, the ZA3 seamlessly transitions between stereo and mono configurations, accommodating diverse listening preferences and system architectures. Each refinement reflects our commitment to sonic excellence and user-centric innovation, positioning this amplifier as the discerning choice for those seeking superior audio fidelity and operational flexibility.
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. The next generation balanced dual-mode Class-D power amplifier. Fosi Audio's first amplifier supporting both stereo and mono modes.
Features
- Dual-Mode Innovation This new generation mini amplifier offers both stereo and mono modes, and adapts flexibly to your diverse needs, allowing seamless mode switching. In stereo mode, it delivers a robust output of up to 155W, 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, OPA2134PA, OP249, AD827, RM4558, LM4562, LME49720HA, etc. to fine-tune your sound to perfection.
- What you Get ZA3 Power Amplifier x1, Power Adapter x1 (The plug of the power adapter will match the country of your delivery address), User Manual x1, our worry-free 24-month warranty, and friendly customer service.
Specifications
- Chip Set Texas Instruments TPA3255
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Output Power
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With 48V/5A PSU Stereo; 155Wx2 @4Ω; Mono: 235Wx1 @4Ω
- With 32V/5A PSU Stereo; 95Wx2 @4Ω; Mono: 110Wx1 @4Ω
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With 48V/5A PSU Stereo; 155Wx2 @4Ω; Mono: 235Wx1 @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
Includes
- 1 x ZA3 Power Amplifier
- 1 x 32v 5A / 48V 5A Power Adapter
- 1 x User Manual
Support
About
Fosi Audio, established in Shenzhen in 2017 by Ryan Huang, has emerged as a pioneering force in democratizing high-fidelity sound. Guided by four core tenets—Foresight, Openness, Sincerity, and Innovation—the brand has cultivated a distinguished presence across 150+ nations. Renowned for exceptional sonic value and community-driven engineering, Fosi integrates premium components from industry leaders like Texas Instruments. Their philosophy transcends conventional audio retail, offering both refined finished products and bespoke DIY solutions for the discerning enthusiast seeking uncompromised quality without premium pricing.