Four channel, four track analog simulsync tape deck. Takes 7" reels at 3.75/7.5 ips, Bias 1 EQ 1 for high speed, Bias 1 EQ 2 for low speed. Calibrated for Maxell XL1 tape, 250nW standard. All channels carefully calibrated within +/-2dB at 50Hz-18kHz. Excellent condition with very little use time!