For sale here is a truly rare find, the only cassette recorder with a spectrum analyzer from Sony. It works fine, was not serviced. It's just as I received it from Japan recently. The upper lid has some marks and a new paint would be nice. Otherwise is looking good and sounds good. I replaced the power plug and I supplied a corresponding 110V adapter. Technical Data Two-motor drive with auto reverse and amorphous tone head 24-segment level meter with 1-dB-steps from 0-10 Metering aid for bias and level calibration Dolby B/C noise reduction Dolby HX Pro for low-distortion recording Audio outputs: Headphone jack Stereo L/R RCA Gold-plated RCA jacks for inputs and outputs Linear counter with memory stop or play when pressing REW and play. Frequency range: 30-20,000 Hz for metal 30-17,000 Hz for chrome