Originally Posted by Criscodisco
Nope, any stereo VCR.
If the VCR doesn't say "Hi-Fi" on it, it may be recording just low-bandwidth audio tracks on the edge of the tape. "Hi-Fi" refers to modulating the audio on an FM carrier signal, and recording that multiplexed into the video signal (which I believe is why some Hi-Fi VCR's behave strangely when you try to record audio with no video, though most of the ones I've used have worked fine with no video input).
One big issue with recording onto a Hi-Fi VCR is levels: most recorders made in the last 10 years or so have no level indicators or controls. If you overmodulate the signal (literally: you're basically recording FM radio onto the tape), you can get nasty dropouts on the recording. Some trial and error might be useful to help prevent that.
The sound quality of Hi-Fi VHS recordings does not change with tape speed. However, using cheaper tapes at the slow extended play speeds might get you more dropouts.
During any dropouts you might hear the VCR switch itself to the linear edge tracks...allowing you to hear how terrible VCR's used to sound before "Hi-Fi" recording was introduced (early 80's, I believe it was, though it was very expensive for a long time).
This is still a good inexpensive way to make decent quality recordings.