
INPUT impedance 500 Kohm, max. voltage 9 Vpp EFFECT RETURN impedance 33 Kohm, max. voltage 12 Vpp CONTROLS GAIN -80 dB to +25 dB range MASTER VOLUME GROUND LIFT switch on rear panel EQUALIZATION LOW center frequency: 80 Hz; level: ±12 dB LOW MID center frequency: 400 Hz, level: ±12 dB HIGH MID center frequency: 800 Hz, level: ±12 dB HIGH 3 kHz shelf, level: ±12 dB OUTPUT LINE OUT balanced XLR, max. voltage 25 Vpp EFFECT SEND unbalanced, max. voltage 12 Vpp (pre-EQ) TUNER OUT unbalanced, max. voltage 2 Vpp SPEAKER OUT speakon / 1/4" (x2) OTHER WEIGHT 8.16 lbs / 3,7 kg DEPTH 11.89 in. / 30.2 cm HEIGHT 3.39 in. / 8.6 cm (2 rack units) WIDTH 14.5" / 36.8 cm (with rack ears: 19" / 48.3 cm) OPTIONAL FOOTSWITCH mute OUTPUT POWER 500W RMS @ 4 ohms, 300W RMS @ 8 ohms POWER REQUIREMENT 100V; 120V; 230V; 240V 50/60Hz The R 500's preamp uses one ECC83 tube, manufactured by JJ Electronics