Yamaha PX5  2x500W/2x800W Class-D Professional Power Amplifier with DSP & Speaker Presets

Product Introduction
The Yamaha PX5 is a versatile 2-channel Class-D professional power amplifier designed to deliver clean, efficient, and powerful sound reinforcement. With 500W x 2 at 8Ω and 800W x 2 at 4Ω, plus flexible DSP features including EQ, crossover, delay, limiter, and Yamaha speaker presets, the PX5 is engineered to meet the needs of both portable and installed PA systems. Its robust protection circuits, variable-speed cooling system, and smart utilities ensure reliable performance in any environment.

Key Features / Bullet Points

• Output Power: 500W x 2 (8Ω), 800W x 2 (4Ω), Power Boost Mode up to 1400W x 1

• Class-D amplifier engine with custom LSI for high efficiency and low distortion

• Built-in DSP with 6-band PEQ, crossover, filters, delay, limiter, and speaker processing

• Yamaha factory presets plus 8 user amplifier presets

• Latency as low as 1.5ms (analog input to speaker)

• Comprehensive protection: load, amplifier, and power supply safeguards

• Multiple I/O: XLR, TRS, speakON, binding posts, USB for preset/firmware updates

• Lightweight 6.9 kg 2U rackmount with efficient cooling fans

Specifications (PX5)

• Output Power (1kHz, Non-clip, 20ms Burst, Both channels driven)

  • 8Ω: 500W x 2

  • 4Ω: 800W x 2

  • 2Ω: 500W x 2

  • 8Ω Power Boost: 800W x 1

  • 4Ω Power Boost: 1400W x 1

• General

  • Sampling Frequency: 48kHz

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

  • Frequency Response: 20Hz–20kHz (±1.0dB)

  • THD: 0.1% (1kHz, 10W), 0.3% (1kHz, half power)

  • S/N Ratio: 100dB (A-weighted, 8Ω)

  • Crosstalk: < -60dB

  • Gain/Sensitivity: Multiple gain settings (24.3dB–36.3dB)

  • Max Input Voltage: +24dBu

  • Input Impedance: 20kΩ (balanced), 10kΩ (unbalanced)

• I/O Connectors

  • Speaker Outputs: 2 x Neutrik speakON NL4, 2 x Binding posts, 2 x 1/4" TS

  • Line Inputs: 2 x XLR-3-31, 2 x 1/4" TRS

  • Others: USB 2.0 (Save/Load, firmware update), AC inlet

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

• DSP: D-CONTOUR, PEQ, HPF/LPF, Delay, Speaker Processor

• Latency: 1.5 ms (Analog in → Speaker out)

• Cooling: 2x variable-speed fans (front-to-rear)

• Protection: Load, amplifier, and PSU full circuit protection

• Amplifier Class: Class-D, BTL

• Power Consumption: 230W (1/8 Max, 4Ω pink noise), 55W idle

• Dimensions (WHD): 480 × 88 × 388 mm (2U)

• Net Weight: 6.9 kg

• Accessories: USB cover, AC cable (2m), Owner’s Manual, Spec sheet