Balanced Dual-Mode Class-D Power Amplifier!
The versatile Fosi Audio ZA3 2CH amplifier breathes new life into your audio system. This feature-rich amp suits both traditional stereo listening and advanced setups for audiophiles. The ZA3's key feature is its dual-mode functionality.
In stereo mode it delivers robust power to drive two passive speakers for a clear, detailed listening experience. The real advantage, however, is the option to switch to mono mode. That opens up two potential benefits: you can route the full amplifier power to a single speaker to achieve louder, more dynamic sound, or use two ZA3 units in mono mode to enhance stereo separation across a wider soundstage.

Users' Voices Amplify and Shape Innovation
Behind every innovation is a story. The development of the ZA3 amplifier is one such example, with users at its heart. After the V3 amplifier launched, avid audiophiles provided extensive feedback and called for an even better amp based on the V3.
TI TPA3255 Amplifier Chip
Delivers outstanding sound and extremely low distortion across the audio band with Class-D efficiency.
Advanced Heat Dissipation
Improved cooling via a larger chassis, full-body heatsink, and side vents with dust covers.
Digital and Analog Modules
The optimized PCB layout shields key audio modules from interference, resulting in cleaner sound.

Together Toward Perfection: The Making of the ZA3
The ZA3 is more than a product; it's the result of a collaborative effort between Fosi Audio and our users. We're proud that every customer contributes to this amplifier. From the balanced XLR input to mono-mode support, every ZA3 feature is designed to give audiophile listeners an authentic sound experience. At Fosi Audio we believe true innovation comes from listening with heart, driven by shared passion and pursuit. ZA3 is our commitment to excellence and a shared audio legend we write together with you.

12V Trigger Sync Interface
Seamless sync with other devices for one-click power management to unify your audio system's operation. (3.5-mm stereo trigger cable)

Aluminum Alloy
Fine sandblasting and smooth chamfered edges give the product a refined texture and premium appearance.

Logarithmic Potentiometer
Helps achieve precise volume adjustment that matches the human ear's hearing characteristics.
High Power and High Fidelity!
Features
- Balanced Dual-Mode Class-D Amplifier
- Modes: Stereo and Mono
- Output Power: Stereo 2 x 155W; Mono 1 x 235W
- Input: phono, XLR, 6.3 mm jack; Output: Stereo, Mono
- Frequency Response: 20 Hz - 20 kHz
- Amplifier Topology: TI TPA3255 Chip
- Impedance: 2-8 ohms
Dimensions
- Dimensions (D x W x H): 154.9 x 183.9 x 50.8 mm
Scope of delivery
- 2 x Fosi Audio ZA3 Mono/Stereo HiFi Amplifiers
Suitable accessories (Not included in the delivery.)
Specification
- Product number 00113688
- Inputs 6.3mm Klinke, Cinch / RCA, XLR
- Colour Schwarz
- Power (Watts) 470
- Outputs Cinch / RCA, Klemmanschlüsse für Lautsprecher
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