This is the David Bogen
DB 130 mono tube
preamp. An extremely handy and generally low cost piece on E Bay; this mono
unit works very well for mono restorations.
This one was restored for
us in 2001 by Russ Friend the curator of Russco Electronics. Turntable hunters,
engineers, and audiophiles will recognize the Russco name associated with the
manufacturing of turntables and other audio equipment for broadcast purposes in
the 1950s and 1960s. Russco still continues to manufacture several pieces useful
for radio broadcasters today.
Keep in mind if you have the tube audio bug;
unless you have some background in electronics, hiring a troubleshooter can be
pricey. Tracing hum when using tube audio can be time consuming. Unless you have
an owners manual; getting one of these to work to the best of their ability can
be a challenge.
You will note a lack of recording curve options on the
equalization dial on this unit. It is very well suited for mono vinyl and has
the basic 78RPM recording curves. We have found that fewer choices can make the
process much easier when trying to milk the best sound out of mono vinyl and 45
RPM records especially if you do not have the exact turnover and rolloff
settings that the 78 was recorded at. You could spend all day trying to dial the
George Gott BIGG
piece in for the best sounding recording curve setting and not get noticeably
better sound than you would with the Bogen DB130.
For 78RPM records that require
special and more refined turnover and roll off settings, naturally the Gott or a
McIntosh would be your best choice in tube
record compensation amplifiers.