Yamaha PX8 Power Amplifier  2-Channel 800W x2 Class-D Amplifier with DSP for Professional PA Systems & Installations

Product Introduction

The Yamaha PX8 is a professional-grade Class-D power amplifier designed to deliver high output, intelligent processing, and reliability for a wide range of sound reinforcement environments. With 2x800W at 8Ω and 2x1050W at 4Ω, the PX8 is the most powerful model in the PX series, making it ideal for live performances, installations, DJ setups, and touring applications. Built with Yamaha’s newly developed Class-D engine and advanced DSP, it ensures clear sound, flexible control, and safe operation at all times.

Key Features / Bullet Points

• 2x 800W @ 8Ω / 2x 1050W @ 4Ω output power

• Advanced Class-D amplifier engine with custom LSI

• Onboard DSP: PEQ, crossover, filters, delay, limiter

• Yamaha passive speaker presets for optimized sound

• 8 user amplifier presets with memory save/load via USB

• D-CONTOUR dynamic optimization (FOH, Monitor, Off)

• Protection circuits: load, amplifier, and power supply

• Rugged 2U rackmount design with efficient cooling system

 Technical Specifications

Output Power (Both Channels Driven, 1kHz, Non-clip, 20msec Burst)

• 8Ω: 800W x 2

• 4Ω: 1050W x 2

• 2Ω: 600W x 2

General

• Amplifier Class: Class D, Balanced Output (BTL)

• Sampling Rate: 48kHz

• AD/DA Converters: 24-bit linear, 128x oversampling

• THD: 0.1% (1kHz, 10W) / 0.3% (Half Power)

• Frequency Response: 20Hz – 20kHz, ±1.0dB

• S/N Ratio: 101dB (A-weighted)

• Crosstalk: < -60dB

Input / Output

• Gain/Sensitivity (8Ω, Max): 32.0dB / +8.3dBu, 26.0dB / +14.3dBu, 36.3dB / +4dBu

• Max Input Voltage: +24dBu

• Input Impedance: 20kΩ (Balanced), 10kΩ (Unbalanced)

• Connectors: 2x XLR-3-31, 2x 1/4" TRS, 2x NL4 speakON, 2 pairs binding posts, 2x 1/4" TS, USB (Save/Load, Update)

Processing & Control

• DSP: 6-band PEQ, crossover, HPF/LPF, limiter, delay (0–74ms)

• Presets: 8 user + factory Yamaha speaker presets

• Latency: 1.5ms

• Indicators: Power, Alert, Protect, Clip/Limit, Signal, USB

Protection

• Load: Output mute, Over-voltage limiter, DC-fault shutdown

• Amplifier: Thermal limiter/mute, Overcurrent mute, Overvoltage limiter

• Power Supply: Thermal/Overvoltage/Overcurrent shutdown

Power & Cooling

• Cooling: Dual variable-speed fans, front-to-rear airflow

• Power Consumption: 280W (1/8 power, 4Ω), 60W (Idle)

Physical

• Dimensions: 480 x 88 x 388 mm (2U)

• Weight: 7.2 kg

• Accessories: AC cable, USB cover, Owner’s Manual, Spec Sheet