SPA4-100

4-channel 100 watt Class D power amplifier for professional use. Designed for low impedance or 100 V operation without transmission. Thanks to auto-ramp technology, the power amplifier automatically switches to mute after 10 minutes and to low-power standby after 28 minutes if there is no signal. When a signal is applied, the power amplifier returns to operating mode without noise or delay. The level of the channels (1 & 2 / 3 & 4) can be controlled remotely and the power amplifier can be switched to standby via a contact. Protection circuits against thermal overload, AC overload/underload and DC signals, inrush current limitation.

Mounting material for mounting in 19" racks (1x or 2x @ 19"), under-table and for wall mounting included. 

Technical data:

Stereo output: 4 x 100 watts @ 4 / 8 ohms
Power mono bridge operation: 2 x 200 watts @ 4 / 8 ohms
2 x 350 watts @ 70 V / 100 V               
Frequency response (4 Ω and 8 Ω): 20 Hz - 20 kHz, +/- 0.1 dB
Signal-to-noise ratio (20 Hz - 20 kHz): >100 dB
Input impedance: >10 kOhm balanced
>10 kOhm unbalanced
Input sensitivity: 1.23 V (+4 dBu)
Maximum input level: 12.3 V (+24 dBu)
Gain at 8 Ω: 25 dB
Output circuit: Class D
Cooling: Convection
Input connections: 3.5 mm Euro plug, 5 pins
Output connections: 3.5 mm Euro plug, 4 pins
Control connections: 3.5 mm Euro plug, 5 pins
Dimensions: 43 mm height
241 mm Width
220 mm depth
Weight: 1.8 kg

Manufacturer: QSC 
Type: SPA4-100