Fosi Audio ZA3 Balanced Stereo Amplifier
The Fosi Audio ZA3 Balanced Stereo Amplifier delivers clean, powerful sound in a compact design. Featuring balanced XLR and RCA inputs, it pairs effortlessly with DACs, turntables, and streaming devices. With support for high-power output and a refined Class D chip, the ZA3 offers audiophiles and casual listeners alike a dynamic listening experience without taking up much space.
Category: Amplifiers
The Fosi Audio ZA3 Balanced Stereo Amplifier pushes the limits of compact Hi-Fi with power, flexibility, and customization packed into a sleek design. Built for both casual listeners and audiophiles, it blends cutting-edge engineering with premium components to deliver sound that feels alive and immersive.
Dual-Mode Power
The ZA3 introduces true dual-mode flexibility, letting you switch between stereo and mono operation depending on your setup. In stereo mode, it outputs a strong 180W per channel, while mono mode boosts power to an impressive 235W. Pairing two ZA3 units in mono unlocks a high-powered system that dramatically elevates your listening experience.
Richer Connectivity Options
Designed as Fosi Audio’s debut amplifier with balanced input and trigger support, the ZA3 ensures a clean and stable signal chain. Its balanced combo input accepts both XLR and 1/4″ TRS plugs, effectively reducing interference and lowering the noise floor. A 12V trigger-in port also makes powering up and shutting down seamless by syncing with other connected devices.
Audiophile-Grade Components
At the heart of the ZA3 is the Texas Instruments TPA3255 high-performance Class D amplifier chip, supported by carefully selected Japanese NCC and ELNA capacitors, German WIMA capacitors, and Sumida inductors. These choices yield exceptional clarity, tonal accuracy, and minimal distortion. With a SINAD rating of 89dB, SNR of 106dB, and an ultra-low noise floor of just 150μV, the ZA3 delivers pure sound with remarkable precision.
Advanced Heat Dissipation
Engineered for sustained performance, the ZA3 builds upon the proven cooling system of the V3, taking it further. Its larger chassis, side-mounted ventilation, and dust covers improve airflow and stability, ensuring reliable high-power output even during long listening sessions.
Customizable Sound with Op-Amp Rolling
For enthusiasts who love to fine-tune their system, the ZA3 introduces op-amp rolling. With five swappable op-amps across the left and right channels, balanced input, and subwoofer output, you can personalize your sound signature. Compatible with popular DIP8 dual op-amps such as Sparkos SS3602, MUSES02, OPA2604, OPA2134PA, AD827, LM4562, and more, the ZA3 lets you shape your audio experience to match your taste.
Bringing together raw power, refined engineering, and playful customization, the Fosi Audio ZA3 Balanced Stereo Amplifier is more than just a mini amp—it’s a versatile hub for building a Hi-Fi system that’s truly your own.
Read the full review of Fosi Audio ZA3.
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