• 4 zone P.A. mixing amplifier
  • 3U design
  • Built-in 4 independent channels, which can broadcast different sources at the same time
  • 4 MIC / LINE balance inputs
  • 1 AUX unbalance input
  • Individual tone (treble & bass), gain and zone paging control per input
  • Individual V per output
  • Independent headphone output and monitor output
  • 1 telephone paging input
  • Priority input for telephone and MIC 1
  • Switchable AC 115/230V and DC 24V power supply

Model SPA-4
Max. Input Gain 60dB CH MIC. Input Main out (XLR, balanced)
50dB CH MIC. Input & REC. out (unbalanced)
60dB CH MIC. Input Mic, out (unbalanced)
60dB CH MIC. Input Mono out (unbalanced)
Distortion (THD &N) ≤0.03% at 1KHz
Frequency Response 20Hz to 22KHz, ±2dBu
Main Voltage 220~240VAC /110~120VAC~50/60Hzor 24VDC
Impedance Microphone input: 1.4KΩ,
all other inputs: 10KΩ or Greater,
all other outputs: 120Ω
Dimension (W x D x H) 483 x 15 x 44 mm (19" x 7.5" x 1.7")
Weight 2.9 kg (6.63 lbs)