Mister Disc
Mister Disc (AT770) was a portable record player sold starting in 1983 by Audio-Technica.[1] It was battery operated meant to be used away from home, and it came with a set of fold-away headphones, and was able to play both 33 and 45 RPM records.
![]() A portable record player sold during the 1980s by Audio Technica  | |
| Inception | 1983 | 
|---|---|
| Manufacturer | Audio-Technica | 
In some markets it was named the "Sound Burger"
Specifications
    
| Type: | Belt-drive transcription turntable platter | 
|---|---|
| Platter: | 90 mm aluminium | 
| Motor: | DC, electronically controlled | 
| Speeds: | 33+1⁄3 and 45 RPM | 
| Signal to Noise: | >50 dB | 
| Tone Arm: | Dynamically balanced | 
| Cartridge: | AT103 | 
| Frequency response: | 30 to 25,000 Hz | 
| Output: | 110 mV per channel (line out); 36 mW per channel (headphones) | 
| Power: | 4.5 VDC (3 "C" batteries) | 
| Battery life: | 12 hours | 
| Dimensions: | W290 x D99 x H65 mm (11.4 x 4 x 2.5 inches) | 
| Weight: | 1.2 kg (2.6 lbs) | 
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