Canadian manufacturers of valve pre-amplifiers and power amplifiers, CD players, DAC's and loudspeakers.

Manufacturer of tube transistor amplifiers.

Audio site, mainly about electrostatic loudspeakers and tube amplifiers.

Manufacturer of the tube Opus 1 amplifier.

Provider of KR Audio products. Sells a line of tubes and solid state amplifiers and pre-amplifiers.

Manufacturer of vacuum tube amps, preamps acrylic-granite speakers, home theater speaker systems, silver cables and decorator granite colors.

Manufacturer of musical instrument amplifiers.

ANATECH AB develops analogue electronics covering audio-computer-home and telecommunications, measurement and test equipment.

Extensive list of links and topics on vacuum tube audio applications, projects, theory, and design. Boasts a "world's largest" tube audio links section.

Geboten werden Gitarren-Röhrenverstärker für Musiker mit verschiedenen Einstellmöglichkeiten. [D-67549 Worms]

Single-ended triode, low- or no-feedback amplifiers and preamplifiers. Hand-wound transformers.

Manufacturer of high end tube single ended triode amplifiers design by Lennart Andersen. Denmark.

Extensive site covering the engineering contributions of Hashimoto transformers and other components with relation to Sansui, and new products today.

Designer and manufacturer of pure vacuum tube processors for professional audio. Also high-end home HiFi equipment.

Manufacturer of vacuum tube guitar amplifiers. USA.