Balanced Hi-Fi Amplification in a Compact Form

The Fosi Audio ZA3 is a fully balanced stereo amplifier designed to deliver clear, powerful sound with minimal distortion. Built for audiophiles and hi-fi enthusiasts, it features XLR and RCA inputs, making it compatible with balanced and unbalanced sources alike.

Class D Efficiency with Premium Components

Using a Class D topology and outfitted with high-quality op-amps and capacitors, the ZA3 offers efficient power output while maintaining low noise and excellent dynamic range. It's a powerful and space-saving solution for driving passive speakers with precision and depth.

Versatile Connectivity and Sleek Design

The ZA3 features a precision-machined aluminum chassis with both balanced XLR and single-ended RCA inputs. Binding post speaker outputs support banana plugs or bare wire connections, making it easy to integrate into any home or studio setup.

Features

• Fully balanced stereo amplifier with XLR and RCA inputs
• Class D architecture for high power and efficiency
• Minimal distortion with low-noise circuitry
• Compact aluminum chassis with excellent heat dissipation
• Designed for 4–8 ohm passive speakers

Specifications

• Model: ZA3
• Amplifier Type: Class D
• Output Power: 150 W x 2 (4 Ω, 32 V)
• THD+N: ≤ 0.003%
• SNR: ≥ 110 dB
• Input Sensitivity: 2 V
• Inputs: Balanced XLR, Unbalanced RCA
• Outputs: Speaker Binding Posts
• Speaker Impedance: 4–8 Ω
• Power Supply: DC 32 V (included)
• Dimensions (W×H×D): 125 × 35 × 150 mm
• Weight: 0.8 kg