The RS-714US, National-Panasonic (Technics) 3-motor deck introduced in the early 70’s. Auto reverse, HPF ferrite heads, super fast winding speeds.
Track System: 4-tr; 2-ch (REC/PB)
Tape Speed cm/s.: 9.5; 19 cm/s.
Tape Speed ips: 3-3/4; 7-1/2 ips
Wow and Flutter 7-1/2 ips: 19 cm/s : 53 dB (A weighted)