Yamaha PX8 Power Amplifier

Sampling frequency rate (Internal): 48kHz
A/D D/A converters: AD/DA: 24-bit linear, 128 times over sampling
Total harmonic distortion: 0.1 percent (1kHz, 10W), 0.3 percent (1kHz, Half power)
Frequency response: ±1.0dB (1W, 8ohm, 20Hz to 20kHz)
S/N ratio: 101dB (A-weighted, 8ohm, Gain setting = +14dBu)
Crosstalk: Less than -60dB (Half Power, 8ohm, 1kHz, Vol max input 150ohm shunt)
Voltage Gain/Sensitivity

8ohm Volume max: 32.0dB/+8.3dBu (Gain setting: 32dB), 26.0dB/+14.3dBu (Gain setting: 26dB), 36.3dB/+4dBu (Gain setting: +4dBu), 26.3dB/+14dBu (Gain setting: +14dBu)

Speaker output ports: Neutrik speakON NL4 x2, Binding post x2 pairs, 1/4-inch PHONE(TS) x2
Line input: XLR-3-31 x2, 1/4-inch PHONE(TRS) x2
Others: USB 2.0 Standard-A Connector (Female) for Save/Load, Speaker preset update, Firmware update with USB memory; AC inlet x1 with AC cord clamp

Indicators: POWER x1 (Green), ALERT x1 (Red), USB x1 (Green), PROTECT x2 (Red), CLIP/LIMIT x2 (Red), SIGNAL x2 (Green); Auto LED off feature
Processors: 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)
Latency: 1.5 msec (Analog Input to Speakers)
Presets: 8 user amplifier presets (Factory preset: Speaker presets for Yamaha passive speakers)
Protection circuit

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)

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)
Cooling: 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 percent voltage.
Power consumption: 280W (1/8 MAX power, 4ohm, Pink noise at all channels), 60W (4ohm, Idling)
Dimensions (W x Dx H): 480 x 88 x 388 mm
Net weight: 15.87 lb
Operating temperature: 0-degree-C to +40-degree-C
Storage temperature: -20-degree-C to +60-degree-C

Yamaha PX8 Power Amplifier (1050W x 2 at 4 Ohms)