NATIONAL RV-490 LL Cassette Recorder

Same as National RQ-459
Year: 1979
Track system: 4 track 2 channel (LL)
Recording system: AC biasing system 34 kHz
Recording time: 1 hour [C – 60 (round trip use)
Frequency response: 60 Hz ~ 10.00 Hz
Monitor system: Variable sound monitor type speaker: 10 cm round dynamic speaker (8 Ω)
Practical maximum output: 1.3 W (EIAJ / DC)
Input terminal: M3 (compact) jack: MIC AUX IN
Output terminal: M3 (small) jack: HEADPHONES
Power supply: AC 100V (50 / 60Hz) or DC 6V (using four AA batteries)
Power consumption: 6W
Size: 336.5 (width) x 246.5 (depth) x 80 (high) mm
Weight: About 3.1 kg (excluding dry batteries)