The Otari DP-4050F-C2 is designed to produce 2 cassette copies from a single cassette master. Addition of 3 DP-4050F-Z3 units enables production of 11 copies per pass, while adding 21 DP-4050F-Z3 units plus 3 DP-4050E-Z Buffer Units allows simultaneous production of 65 copies with superb results. Switchable 8/16 times duplication speed 2-minute simultaneous stereo copying of both tape sides (C-60) at 16 times speed Automatic rewind of master and slave tape at program's end Sensor ensures error-free simultaneous master and slave stop CPU control, 3-motor (2-reel DD motor/1 DC capstan motor) stabilized transport mechanism More than 40-tape (C-60) per hour copy capacity at 16x speed Highly dependable 4-channel in-line ferrite heads Fix/Variable master tape player pitch control Adjustable bias and record level for each channel Independent equalization of each channel Independent front panel controls for recording level of each channel LED azimuth indicators One-touch connection of DP-4050F-Z3 Slave Expander Unit [DP-4050F Top] [DP-4050F-Z3] [DP-4050E-Z] Specifications are subject to change without notice or obligation.