Other Makers
The original site gave the big names their own categories and put everything else here. Almost every post, large maker or small, also carries the catch-all Vintage Collectors Amplifier category. The result is an odd but interesting mix.
The most historically important item is a pair of Acrosound Ultra-Linear II mono amplifiers. Acrosound was the Philadelphia transformer firm whose founders, David Hafler and Herb Keroes, named and published the ultra-linear circuit in 1951; Hafler went on to co-found Dynaco. The most unusual is a private collection of about a thousand Braun design pieces from 1955 to 1985, the period when Dieter Rams shaped the company's look.
Smaller makers often have the least documentation, which makes the original listings more valuable: they may be the only published description of a particular unit. Where we could find reliable sources we added notes; where we could not, we say so.
See the Acrosound and Braun maker pages for the company histories.
5 entries
Acrosound
Acrosound Ultra-Linear II Mono Tube Amplifiers (Pair)
Mono blocks from the Philadelphia firm that named the ultra-linear circuit in 1951.
Braun
Braun Design Collection, About 1,000 Pieces
A thousand pieces of Braun design from the Dieter Rams era, in one private collection.
Archive
Lake Mfg Voycall Mono Tube Amplifier
A 40-watt West Coast PA amplifier from a little-documented maker.
Archive
Muzak 903A 6V6GT Tube Amplifier
A background-music amp with one 6V6GT and its schematic inside.
Archive
Solar Capacitor Analyzer and Resistance Bridge
A bridge-type capacitor tester with a magic-eye null indicator.