Yamaha PX8 Power Amplifier

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PX8 Power Amplifier

The versatile PX series power amplifiers lineup combines intelligent processing with high output power to meet the requirements of a vast range of sound reinforcement environments. 300W x 2 at 8Ω / 500W x 2 at 4Ω.

2x 500W at 8Ω
2x 800W at 4Ω
Newly developed Class-D amplifier engine with a custom LSI
Flexible onboard PEQ, crossover, filters, delay, and limiter functions
Yamaha Speaker presets
Utlities for safe and secure operation

Full specs

Yamaha PX3 Power Amplifiers

Intelligent Processing. Serious Power.

Since the 1976 release of the P2200, our first professional power amplifier, Yamaha has strived to achieve the highest possible levels of sound quality, power output, and reliability in sound reinforcement, studio, and installed applications. The new PX series power amplifiers continue this tradition of excellence, utilizing Yamaha’s renowned digital signal processing technology and unparalleled professional audio expertise to achieve a light, durable design, capable of delivering maximum output power to the speakers while simultaneously protecting them with optimized processing. Driven by a newly-developed Class-D amplifier the four new models that make up the PX series are suitable for a broad range of sound reinforcement and installation environments.


Output power; 1kHz Non-clip 20msec Burst Both channels driven

800W x 2

Output power; 1kHz Non-clip 20msec Burst Both channels driven 4Ω

1050W x 2

Output power; 1kHz Non-clip 20msec Burst Both channels driven 2Ω

600W x 2

8Ω/Power Boost Mode

4Ω/Power Boost Mode

Sampling frequency rate - Internal


A/D D/A Converters

AD/DA: 24-bit linear, 128 times over sampling

Frequency response

±1.0dB (1W, 8Ω, 20Hz to 20kHz)

S/N ratio

100dB (A-weighted, 8Ω, Gain setting = +14dBu)

8Ω Volume max

32.0dB/+4.1dBu (Gain setting: 32dB), 26.0dB/+10.1dBu (Gain setting: 26dB), 32.1dB/+4dBu (Gain setting: +4dBu), 22.1dB/+14dBu (Gain setting: +14dBu)

8Ω Volume max /Power Boost mode

Maximum input voltage


Speaker output ports

Neutrik speakON NL4 x2, Binding post x2 pairs, 1/4" PHONE(TS) x2

Line Input

XLR-3-31 x2, 1/4 "PHONE(TRS) x2


POWER x1 (Green), ALERT x1 (Red), USB x1 (Green), PROTECT x2 (Red), CLIP/LIMIT x2 (Red), SIGNAL x2 (Green); Auto LED off feature


Input summing; D-CONTOUR(FOH/MAIN, MONITOR, OFF); Delay(0 – 74msec); HPF/LPF(cutoff frequency 20Hz~20kHz with polarity control); Speaker Processor(6 band PEQ + Limiter + Delay)

Total harmonic distortion

0.03 % @ +14dBu (20 Hz to 20kHz), GAIN knob: Min, 0.005 % @ +24dBu (1kHz), GAIN knob: Min


1.5 msec (Analog Input to Speakers)

Equivalent input noise

-128 dBu (Mono Input Channel, Rs: 150Ω, GAIN knob: Max)

Load protection

POWER switch on/off: Output mute; Output voltage protection: Over voltage limiter, user configurable by wattage and speaker preset; DC-fault: Power Supply shutdown (NOT restored automatically)


-78 dB

Amplifier protection

Thermal: Output limiter (Restored automatically) → Output mute (Restored automatically); Over current: Output mute (Restored automatically); Over voltage: Output limiter (Restored automatically); Integrated Power Limit: Output limiter (Restored automatically)

Power supply protection

Thermal: Output limiter (Restored automatically) → Power supply shutdown; Over voltage: Power supply shutdown; Over current: Power supply shutdown

Amplifier class

Class D, Balanced output circuit (BTL)


16 step variable speed fan x 2, front to rear airflow

Power requirements

Depending on area of purchase; 100V 50Hz/60Hz, 120V 60Hz, 220V-240V 50Hz/60Hz *Verified as operating at rated power voltage +/- 10% voltage.

Power consumption

280W (1/8 MAX power, 4Ω, Pink noise at all channels), 60W (4Ω, Idling)

Dimensions W / H / D

480mm (18-7/8") / 88mm (3-7/16"): 2U / 388mm (15-2/8")

Net weight

7.2 kg (15.87 lbs)


USB cover, Owner's Manual, Specification sheet, AC cable (2.0m) x 1


Operating Temperature: 0°C to +40°C, Storage temperature: -20°C to +60°C


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