Kenwood KX-31, the single Stereo Cassette Deck, and features:
Dolby B noise reduction system
Tape selector (Normal, CrO₂, Metal)
7-LED peak level meters (-20 dB to +6 dB)
Full auto shut off mechanism in all modes
Timer stand by mechanism
Three digit tape counter
Two microphone jacks and headphone jack
Specifications
Type: Stereo cassette deck with Dolby B NR system
Track System: 4-track, 2-channel stereo/mono, rec/pb
Erasing System: AC System
Recording System: AC bias system (bias frequency: 105 kHz)
Tape Speed: 4.76 cm/s (1-7/8 ips)
Heads:
1 x Hard permalloy with sendust guard record/playback,
1 x Double gap ferrite head, erase
Motor: electronically controlled DC single motor
Fast Winding Time: aprox. 95 sec. (C-60 tape)
Tape Type: Normal, CrO2, Metal
Total Harmonic Distortion: less than 1,0% (at 1 kHz , 0 VU Normal tape)
Frequency Response:
Normal Tape : 20 Hz to 16,000 Hz (30 Hz - 15,000 Hz ±3 dB)
CrO₂ Tape : 20 Hz to 17,000 Hz (30 Hz - 16,000 ±3 dB)
Metal Tape : 20 Hz to 17,000 Hz (30 Hz - 16,000 Hz ±3 dB)
Signal to Noise Ratio:
Normal Tape (Dolby ON /OFF) : 67 dB / 57 dB
CrO₂ Tape (Dolby ON / OFF) : 67 dB / 57 dB
Metal Tape (Dolby ON /OFF) : 67 dB /57 dB
Wow and Flutter: 0.045% (WRMS)
Input Sensitivity/Impedance
Line x 2 : 77,5 mv/50 k Ω
Microphones x 2 : 0,7 mv/3,3 k Ω
Output Level/Load Impedance
Line x 2 : 270 mv/50 k Ω
Headphones x 1 : 50 mv/8 Ω
Power Requirements: AC 120, 220 - 240 V switchable 50/60 hz
Power Consumption: 15 watts
Dimensions (W x H x D): 440 x 117 x 232 mm (17-5/16" x 4-39/64" x 9-1/8")
Weight: 4 kg (8,8 lbs)