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<DIV>This isn't exactly a quad topic, but the Dolby units in question can be
used to process Dolby-A encoded quad tapes!</DIV>
<DIV> </DIV>
<DIV>I have several Dolby 380 units which are two-channel Dolby A with
interfaces for the Ampex VPR-3. Two of the units use Cat 55 cards which is
what the manual I have shows in the frame, but one uses Cat 225 cards
instead. Anyone know what the difference is between the 55 and 225
cards? An inquiry to Dolby yielded a non-helpful reply.</DIV>
<DIV> </DIV>
<DIV>Don Norwood<BR>Digitrak Communications, Inc.<BR><A
href="http://www.digitrakcom.com">www.digitrakcom.com</A><BR><BR></DIV></BODY></HTML>