Nakamichi 680ZX

Tape Speed: Standard 1-7/8 ips (4.8 cm/s)

Frequency Response: 20Hz to 22kHz +/- 3 dB

Signal to Noise Ratio: Better than 66 dB (iHF-A WTD RMS, ref, 400 Hz)

THD: <0.8% at 400 Hz, 0 dB, ZX Tape

Wow and Flutter: <0.04% WTD RMS, <0.08% WTD Peak

Erasure: Better than 60 dB (1 kHz)

Half Speed (15/16 ips)

Frequency Response: 10Hz to 15kHz +/- 3 dB

Signal to Noise Ratio: Better than 60 dB (iHF-A WTD RMS, ref, 400 Hz)

THD: <1.5% at 400 Hz, 0 dB, ZX Tape

Wow and Flutter: <0.06% WTD RMS, <0.14% WTD Peak

Erasure: Better than 60 dB (1 kHz)

Type: 3-head, single cassette deck

Track System: 4 tracks/2-channel stereo

Heads: 3 (erase, record, playback)

Tape Type: Nak ZX, SX, EXII,EX (Type I-Normal, Type II -Chrome & Type IV-Metal)

Dimensions: 19.0 x 5 5/8 x 13 3/8″ (482 x 143 x 340mm)

Weight: 19 lbs 13 oz (9.0 kg)