Rolls RA170 Mono Power Amplifier 70V/70W Audio Distribution - USED

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The RA170 mono power amplifier was designed especially for the installation contractor, and is housed in a single rack-space unit with a choice of either an RCA coaxial or 1/4" TS phono unbalanced input. The 70 volt speaker outputs are provided via spring-loaded terminals and no transformer is required for speaker connection.

The front panel includes a power indicator LED, a volume control, and two clip LED's which indicate circuitry overload. The output circuitry of the RA170 is protected from momentary shorting and excessive load by a specially designed protective circuit.

  • Mono 70 volt amplifier
  • Drives 70 volt speakers directly
  • Choice of RCA coaxial or 1/4" TS phono input
  • Spring loaded speaker output
  • Clip indication
  • Fault protection output
Power Amplifier
Number of Channels 2
Power Rating 70 V:
70 W Peak
Frequency Response 70 Hz to 20 kHz
Input Impedance 147 Kilohms
Max Gain 40 dB
SNR >114 dB
I/O 1 x Push Terminal Output
1 x RCA Input
1 x 1/4" TS Input
Display & Indicators 2 x LED (Clip)
1 x LED (Power)
Cooling Convection
Dimensions 19.0 x 5.0 x 1.8" / 48.3 x 12.7 x 4.4 cm
Weight 5.5 lb / 2.5 kg
Packaging Info
Package Weight 7.75 lb
Box Dimensions (LxWxH) 21.654 x 8.268 x 3.858"

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