Rolls 70 Volt Power Amplifier RA170

Updated August 6, 2026

Rolls 70 Volt Power Amplifier RA170 Description Introducing the RA170 Power Amplifier, meticulously crafted for installation contractors. This compact, single rack-space, mono unit offers a choice of RCA or 1/4" unbalanced input for seamless connectivity. Say goodbye to the hassle of transformers, as the 70 volt speaker outputs feature terminals for effortless speaker connection. The front panel boasts a user-friendly design, housing a Power indicator LED, a Volume control, and two Clip LEDs to alert you of circuitry overload. With a specially engineered protective circuit, the output circuitry remains safeguarded against momentary shorting and excessive load. Experience the RA170 Power Amplifier - your go-to solution for professional installations, designed to simplify your setup and deliver exceptional audio performance. Specifications: Recommended Load: 70 Volt line (70 Watts maximum) Frequency Response: 70Hz to 20 kHz Equiv. Input Noise: 100 microVolt typical, A weighted 600 Ohm input S/N Ratio: 114 dB @ 70 Watts Gain: 40 dB Input Impedance: 47 k Ohms Size (W x H x D): 19" x 1.75" x 5" (48 x 4.5 x 12.7cm) Weight: 5.5 lbs (2.5 kg) 70 Watts of clean amplification into 70 V system Spring-loaded output terminals Front-panel heat sinking

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