Tube Depot
Audio vacuum tubes by Groove, Ruby, Sovtek and Svetlana for guitar amplifiers and home tube amplifiers. Based in Memphis, Tennessee.
http://www.tubedepot.com/

Microphone Adapter For Guitars
Stand and holder available. Based in Spain.
http://www.euskalnet.net/juanbilbao

Action Custom Straps
Custom guitar and camera straps made of fine garment leather. Many feature exotic snakeskin inlays.
http://www.actioncustomstraps.com/

Teachers Discount Music
Metronomes from Franz, Wittner, Seiko, Matrix, Dr. Beat, Exacto, and Qwick Time. All metronomes are pictured with description. Quantity pricing available. Fast delivery.
http://home.rica.net/tdm

Humistat Company
A pocket-sized humidifier that protects wooden musical instruments from drying out, warping and cracking, and keys and pads from sticking. Designed for instrument carrying cases. Online ordering.
http://www.humistat.com/

Internet Music Supply
A wide range of musician's accessories, band instrument supplies, and replacement parts.
http://www.aim-corp.com/ims/welcome2.htm

Supreme Music
Accessories for brass and woodwinds; strings for guitars and basses; drum accessories, congas and bongos. Located in London, England.
http://www.suprememusic.co.uk/

Harmony On-Line
Piano accessories, books and videos. Music stands and holders, metronomes. Keyboard and harp taborets, benches and stools.
http://www.harmonyonline.com/

Virtuoso
Developers of Virtuoso Polish and Cleaner for the care of vintage musical instruments with nitrocellulose lacquer finishes.
http://www.virtuosopolish.com

ConcertLight - Cordless Music Light
ConcertLight, new battery-operated stand light for musicians, provides good illumination, even on oversize music scores. Play in poorly lit spaces without eye strain. Avoid the tangle of power cords!
http://www.lampcraft.com

Counting Aloud CD Systems
A set of four compact discs with tracks that have spoken counting for 2, 3, 4, and 6-beat rhythms. An alternative to a mechanical metronome.
http://countingaloud.com

Headway Electronics
Active Transducer Pickups for Acoustic Instruments. We supply under saddle piezo pickups for guitar, bozouki, ud, lute, harp, bass, ukelele, mandolin and bodhran.
http://www.headwayelectronics.com

Stringbender
A site dealing mainly with string bending accessories, Parsons/Green B-Bender, Classic Bender, Double Bender.
http://www.stringbender.com/

Gruven Music Products
Manufactures guitar, bass, mandolin, saxophone, violin, and amplifier stands.
http://www.gruven-stands.com/

Adapt-A-Stand
Selling add-ons extending existing music stands to six sheets wide, with models for pianos or electric keyboards as well as for orchestral stands. Diagrams, photos, FAQ, pricing and ordering.
http://www.adapt-a-stand.com

Arno Barthelmes
Germany's oldest tuning fork manufacturer. [German, English]
http://stimmgabeln.de/