SURE KAB9 8x50W Audio Power Amplifier Board 8-Channel 7.1/5.1/4.2/4.0 USB CODEC Input Amplifier

SURE KAB9 8x50W Audio Power Amplifier Board 8-Channel 7.1/5.1/4.2/4.0 USB CODEC Input Amplifier

Specification:
Electric Parameter:
- Number of channels: 8
- Minimum load impedance: 3-4ohm
- Efficiency: 87% for 50W at 4ohm
- Nominal power requirement: 400W at 24V 1KHz
- Power supply voltage: 12 - 30V (Typ. 24V) at 1KHz 40ohm
- Switching frequency: 400kHz for SD floating at 24V
- Power consumption:
  1/4 of max output power at 4ohm, 24V, 1KHz: 118W
  1/8 of max output power at 4ohm, 24V, 1KHz: 60W
- Control:
  Shutdown (Low = inputs enabled): high-level input voltage > 3.3V; low-level input voltage < 0.8V
  Mute (High = outputs enabled): high-level output voltage > 3.3V; low-level output voltage < 0.8V
- Standby power consumption: 240mW (SD short to GND, only when low power module available)

Audio Performance:
- Gain:
  SW1: 1-4, OFF: 31dB
  SW1: 1, ON; Others: OFF: 35.8dB
  SW1: 2, ON; Others: OFF: 33.3dB
  SW1: 3, ON; Others: OFF: 29.8dB
  SW1: 4, ON; Others: OFF: 23.8dB
- Input sensitivity (RMS): 460mV for 50W at 4ohm, 1kHz 26dB
- SNR: 91dB for 50W at 4ohm, THD+N=1%, 26dB
- THD+N:
  5W at 4ohm, 1kHz, 24dB /CH: 0.03%
  10W at 4ohm, 1kHz, 24dB /CH: 0.04%
- Input impedance: 10kohm
- Output noise: 340uV at 26dB
- DC offset: 10mV

Package Included:
- 1 x Power Amplifier Board