In article ,
Iain Churches wrote:
Agreed. I remember looking at an old Magnetofon 76cms deck with
AEG spools, just post WW2. The bias/erase oscillator was a separate
unit, an add-on with its own psu.

Perhaps the best all round 1/4" machine ever was the EMI BTR2. Which was
in use for longer than any other model - and may still be used somewhere
even today. All the various amps were separate units. To make servicing
easier.

--
*Never put off until tomorrow what you can avoid altogether *

Dave Plowman London SW
To e-mail, change noise into sound.