Sony Elcaset EL-5

New capstan and counter belts.New brake pads.Drive surfaces cleaned.Switches and controls cleaned/lubricated.Dolby lamp replaced.Cleaned tape path and lubricated mechanism.Included Elcaset tape.Cosmetics show some corrosion on door and one plastic side trim piece missing.Not noticeable from front.All mechanical and electronic functions tested and working fine.
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Elcaset is a short-lived audio format jointly developed by Panasonic, Sony, and Teac in 1976, building on an idea introduced 20 years earlier in the RCA tape cartridge.

In 1976, it was widely felt that the compact cassette was never likely to be capable of the same levels of performance that was available from reel-to-reel systems, yet clearly the cassette had advantages in terms of convenience. The Elcaset system was intended to marry the performance of reel-to-reel with cassette convenience, but be more of a compromise on size between the two than the RCA cassette is. The name "Elcaset" may simply mean L-cassette, or large cassette, since the ​1⁄4" tape inside is double the ​1⁄8" width found in compact cassettes. They were divided into six tracks.[1]

Size comparison of Elcaset (left) with standard Compact Cassette

The cassette itself looks similar to a compact cassette, only larger—about twice the size.[2]Like the earlier RCA tape cartridge, it contained 1⁄4 inch (6.4 mm) tape running at 3 3⁄4 inches per second (9.5 cm/s), twice the width and twice the speed of a compact cassette, providing greater frequency response and dynamic range with lower high-frequency noise than the compact cassette. Another notable difference from compact cassettes is that the tape is withdrawn from the cassette when run through the transport mechanism so that the manufacturing tolerances of the cassette shell will not affect sound quality. The top-of-the-line Elcaset decks also have all the features of deluxe open-reel decks, such as separate heads for erasing, recording, and playback; remote control, and heavy-duty transports for low wow & flutter.