Amplifiers and speakers
- Amcron
- AmpegAmpeg
- Ashdown Engineering
- Behringer
- Crate Amplifiers
- Crown Audio
- EBS Sweden AB
- Eden Electronics
- ESP Guitars
- Epifani Custom Sound Systems, Inc.
- Euphonic Audio
- Fender
- Gallien-Krueger
- Genz-Benz
- Hartke
- Hevos
- Hiwatt
- HOT
- Laney Amplification
- Markbass
- Marshall Amplification
- Mesa/Boogie
- New Vintage Amplifiers
- Orange Amplification
- Peavey Electronics
- Phil Jones Bass
- quad
- Roland Corporation
- Smith Custom Amplifiers
- SP Amplifier
- SWR Sound Corporation
- TC Electronic
- Tech 21
- Teisco
- Trace Elliot
- Traynor (Yorkville Sound)
- Warwick
- Yamaha
Amplifiers and/or preamplifiers
- Alembic (preamps and filters)
- SP Amplifier
- Genz Benz
- Walter Woods
just...BASS! 