Electronics
- 603
- Prism Audio
- Manufacturers of power amplifier modules, valve amplifiers, class D amplifiers and power supplies. UK.
- 606
- SMG Productions
- Manufactures mic pres and line level processors for professional audio, broadcast and sound reinforcemen
- 607
- SRS Labs, Inc.
- Develops, markets and licenses audio technologies which create an immersive three-dimensional sound for consumer home audio, computer multimedia, car audio, professional sound and video and arcade games markets. (Nasdaq: SRSL)
- 608
- Sakuma System
- An association for audiophiles and manufacture of handmade vacuum tube amplifiers. Japan.
- 610
- Space-Tech Hi-End Audio Laboratory
- Canadian manufacturers design and custom made of vacuum tube pre-amplifiers and power amplifiers, integrated amplifier, buffers, active crossovers, CD players, DAC's and loudspeakers. Microprocessor design and engineering.
- 611
- Swedish Audio Technology
- Makes and design remote controlled integrated amplifier and CD player. Sweden.
- 612
- Transcendent Sound
- Manufacturer of tube amplifiers, DIY audio kit, audio projects, and preamplifiers. Provides forum and product information.
- 615
- Wavac Audio Lab.
- Manufacturer of hi-fi single-ended directly heated triode power amplifiers, phono equalizer, attenuators and AC conditioners. Japan.
- 617
- We Buy Amps
- Buys guitar amps from musicians and collectors. Provides a photo gallery of collectible amps.