For sale in very good condition SPL MTC Model 2381 monitor & Talkback Controller with 3 stereo speaker outputs and headphone amplifier. Specifications: Analog inputs & outputs: XLR & TRS Jack (balanced), RCA: Maximum input gain (XLR, Jack): 21 dBu Maximum input gain (RCA): 19 dBu Input impedance (Jack): 50 kΩ Input impedance (RCA): 10 kΩ Output impedance (XLR): 100 Ω Common mode rejection (1 kHz): 70 dB Frequency range (-3 dB): 10 Hz - 100 kHz THD +N (10 Hz - 22 kHz, 0 dBu): 0.005 % Noise (A-weighted): -89.4 dBu Dynamic range (XLR, Jack): 110.4 dB Dynamic range (RCA): 108.4 dB Internal Linear Power Supply with Toroidal Transformer: Operating voltage for analog audio: +/- 15 V Operating voltage for relays and LEDs: +12 V Mains Power Supply: Mains voltage (selectable): 230 V AC / 50; 115 V AC / 60 Hz Fuse for 230 V: T 315 mA Fuse for 115 V: T 630 mA Power consumption: max. 10 W Dimensions & Weight.