
4 × 200W into 8 Ohms of pure audio excellence engineered by YNhifi.
The A4 delivers 200W per channel into 8 ohms with exceptional signal clarity and low-distortion audio reproduction across all four channels.

Delivers 4 × 200W into 8 ohms, providing ample power for demanding audio installations and multi-channel systems.

Achieves excellent signal-to-noise ratio for clean, transparent audio without background hum or interference in quiet passages.

Robust output stage sustains consistent current delivery under demanding loads, ensuring stable performance with any speaker impedance.

Each A4 is handcrafted in our Dongguan facility with quality control at every stage, ensuring reliability and sonic performance.

Advanced heat management keeps the amplifier operating at optimal temperature across extended listening sessions.

XLR and RCA inputs allow flexible integration with professional audio gear and consumer equipment without signal degradation.
The A4 delivers 4 × 200W into 8 Ohms with a frequency response of 20Hz to 20kHz, ensuring precise audio reproduction across the full spectrum. Input sensitivity of 1V RMS provides flexibility for various source components. Built with low noise design and superior damping factor for controlled, articulate performance in demanding audio systems.
Every metric reflects our commitment to clean amplification, stable output, and professional-grade reliability across demanding audio applications.
200W
Power per channel
4 channels × 200W into 8 Ohms delivers the headroom needed for dynamic audio systems.
≤0.05%
THD + noise
Ultra-low distortion ensures pristine signal integrity across the entire frequency range.
500+
Damping factor
High damping factor provides tight speaker control and accurate bass response reproduction.
110dB
Signal-to-noise ratio
Exceptional noise floor reveals every detail without introducing audible hum or hiss.
Let our audio specialists help you integrate the A4 into your high-end system with expert guidance.