4 track 1/4" format. Features include: high/low speed, normal/high EQ/bias, 2 and 4 channel playback. 4 1/4" inputs on face, 2 Stereo RCA in/outs. Missing normal/simulsync on track 1. Excellent cosmetics and heads. Needs basic cleaning and calibration. Unit is worth Heads, Motor, Reel Tables,Headcover etc.