Black high-fidelity amplifier with two glowing yellow VU meters on a wooden shelf.

A4 4-Channel Power Amplifier

4 × 200W into 8 Ohms of pure audio excellence engineered by YNhifi.

Advanced capabilities

Four channels of precise power

The A4 delivers 200W per channel into 8 ohms with exceptional signal clarity and low-distortion audio reproduction across all four channels.

A4 Power Amplifier rear panel output terminals

200W per channel

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

A4 Amplifier internal circuit board precision components

Low noise floor

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

A4 4-Channel Power Amplifier full unit profile

Continuous output current

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

Technician performing precision calibration on A4 amplifier

Precision engineering

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

A4 Amplifier aluminum heatsink thermal management design

Thermal stability

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

A4 Amplifier input and control connectivity panel

Balanced connectivity

XLR and RCA inputs allow flexible integration with professional audio gear and consumer equipment without signal degradation.

Technical specifications

A4 4-Channel Power Amplifier Technical Details

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.

Performance verified

A4 delivers precision audio power

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.

Experience precision amplification. Contact YNhifi today.

Let our audio specialists help you integrate the A4 into your high-end system with expert guidance.