something we have the chance of courtesy of [DiodeGoneWild], who’s fixing a 1980s Soviet cassette recorder. The model in question is a Vesna 309, and it has some audio issues and doesn’t turn ...

The core of the build is a portable 3-head cassette recorder, in this case a Marantz PMD430. The circuit has been around for a while – it was originally found in an issue of Stompboxology in the ...