Aprilsound - the best in custom-built audio for the most discerning audiophile

Audio and video equipment repairs in the Austin, Texas area specializing in high end and vacuum tube audio. Also, sales of vintage 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.

A tube audio DIYer's. Amplifiers, turntable, speakers, tube parts.

Repair, modification and restoration of vintage, vacuum tube audio equipment such as tube amplifier.

Arizona Hi-Fi, Specializing in Tube Audio Equipment, High-Performance Audio Products and Accessories. Sales, service, and advice

Produces high end audio products such as cables, tube amplifier, and parts. USA.

Maryland's quality audio salon. We have been satisfying our customers for 20 years. Inside you will find 10 great reasons why you should join them in choosing The Listening Room for your audio needs.

Manufacturer of tube amplifiers, DIY audio kit, audio projects, and preamplifiers. Provides forum and product information.

Simply the finest repair service you can find. We provide a one-year full warranty on everything we service. The quality of the repairs is due to the engineers we employ to work on your fine stereo equipment, people who care about what they do, and are committed to finding and eliminating the CAUSE of the failure.

France manufacturer of tube integrated amplifiers, power monoblock amplifiers, D/A converters and pre-amplifier such as Eclipse.