Bruce Bass Amplifier - 1967-1972

Bruce amplifiers were rare, highly distinct guitar and bass amplifier systems manufactured in Englewood, Colorado roughly between 1967 and 1972.

Founded and built by a small team that included aerospace electronics engineers from Martin Marietta, they featured an unusual modular design.

Design & Architecture

Split Configuration: The thin, lightweight unit kept on stage was just a two-channel preamp head.

Powered Cabinets: The heavy-duty power amplification modules were integrated directly inside the speaker cabinets.

High-End Speakers: Cabinets were typically loaded with high-efficiency JBL or Altec Lansing 15-inch speakers.

Configurations: Built in various column and cabinet setups (such as 1x15, 2x15, and multi-speaker arrays) capable of extreme volume.

History & Endorsements

Notable Users: They were famously used on tour and in the studio by members of Three Dog Night (including Michael Allsup and Jimmy Greenspoon).

Jimi Hendrix Connection: Jimi Hendrix notably plugged into Michael Allsup's Bruce amplifier during late-night live jams at L.A.'s Whiskey a Go Go in 1968.

Rarity: The company quietly folded in the early 1970s, making surviving functional units rare collector's items today.

Please note: Bottom speaker needs attention. There is a small tear and requires rewiring.