The Rolls RA235 offers convenient, reliable studio monitoring amplification in a single rack space! It features 35 watts of power per channel into 8 ohms; convenient spring-loaded output terminals; front panel heat sinking for proper venting; protected output stage; 1/4″ and RCA inputs. frequency response: 5 Hz – 40 kHz equiv. input noise: 100 mV typical, A weighted, 600 ohms S/N Ratio: 114 dB @ 35 Watts gain: 34 dB input impedance: 47 KOhms power: 120 VAC 50-60 Hz weight: 5.5 lbs. size: 19″ x 1.75″ x 5″