Walney wrote:
I have been trying to source the DENON DRR M33 single cassette deck.
Unfortunately, Denon have discontinued this model. As I have a large
collection of tapes, I'd be very grateful if anybody could advise me
where I might find the unit in question.

http://www.soundandvisiononline.com
Enter DRR-M33 in the search. Expensive though. £139!!

It's part of this system. http://www.usa.denon.com/DM33_E3.pdf

Looking at the manual there seems to be standard phono sockets on it.
Try connecting these to something with a phono output and see if
playback is possible when the system is switched to tape. If so, then
there are plenty of better Denon decks out there that will work. I've
just seen on eBay Denon 810 professional 3-head decks going for 20 quid!!!

--
Adrian C