Links

Headphone Makers
Aiaiai --- Danish maker of fashion conscious headphones.
AKG --- Very competent Austrian headphone maker. Part of Harmon International.
Allessandro --- Exclusive retailer for the Pro Audio market selling rebranded Grado headphones.
Alien Ears --- U.S. maker of low-cost custom molded IEMs.
Altec Lansing --- Large U.S. maker of a variety of audio products including in-ear monitors.
Atomic Floyd --- U.K. maker of generic fit in-ear monitors.
Audez'e --- A small outfit, making one of the world's best headphones: The LCD-2.
Audio-GD --- Maker of headphone amps and DACs.
Audio Technica --- Large manufacturer of AT branded and OEM mikes, cartridges, headphones, and related products.
beyerdynamic --- medium sized German maker of Pro-Audio gear and a comprehensive line of headphones.
Denon --- Large Japanese maker of consumer audio gear including a line of headphones and IEMs.
Etymotic --- An extremely technically competent company that designs products for hearing aid, and some of the best generic fit IEMs.
Fidelity Customs --- U.S. maker of custom fit in-ear monitors.
Futuresonic --- Small U.S. company making a line of both custom and universal-fit in-ear monitors.
Goldring --- Small U.K. maker of a line of full sized headphones. Also makes cartridges.
Grado Labs --- Small Brooklyn, N.Y. maker of audiophile headphones and cartridges.
Jays --- Swedish maker of a variety of low to mid priced headphones.
JH Audio --- Maker of custom IEMs from mid-price to ultra high-end.
HiFiMAN --- Maker of a variety of headphones including planar magnetic types.
Klipsch --- Long time U.S. maker of audio products including an ever-growing line of headphones.
Koss --- Venerable grand-daddy of U.S. headphone manufacture.
Lenntek --- Maker of IEMs and iDevice accessories.
LiveWires --- Maker of custom fit in-ear monitors.
Maximo --- Maker of IEMs and iDevice accessories.
Monster --- Mid-size U.S. maker of audio accessories with a rapidly growing line of pop-culture headphones.
Ortofon --- Danish maker of DJ headphones and cartidges.
Phiaton --- Brand name of Korean ODM headphone maker Cresyn.
Philips --- Huge Dutch firm with very large Consumer Electronics division making all manner of gear including a full line of headphones.
Phonak --- Swiss maker of Audéo brand in-ear monitors.
RHAcoustics --- A U.K. fashion headphone and earphone maker.
Sennheiser --- Often considered the worlds most competent headphone maker.
Sensaphonics --- Manufactures custom fit in-ear monitors and related pro-audio hearing products.
Shure --- Mid-size U.S. maker of Pro-Audio gear, and an ever growing line of headphones and IEMs.
Sleek Audio --- Small U.S. headphone maker of tunable IEMs and the Sleek by 50 Cent.
Sony --- Huge Japanese consumer electronics company; probably the world's largest line of headphones.
Stax --- The grandfather of high-end headphone listening, and long time maker of electrostatic headphones.
Superlux --- Taiwanese maker of a variety of headphones and other consumer and pro audio gear.
Ultimate Ears --- A Logitech company making both custom and universal fit in-ear monitors.
Ultrasone --- A German company making headphones featuring controversial S-Logic 3-D sound.
Unique Melody --- Australian maker of custom IEMs.
V-Moda --- The original fashionista headphone maker with a small line of in-ear and banded headphones.
VSONIC --- OEM/ODM maker of in-ear and ear-bud headphones.
Westone --- Long time maker of custom ear molds for hearing aids; manufactures line of both custom and universal-fit in-ear monitors.
Woodees --- A brand of DMX Audio who makes wood bodied IEMs.

Headphone Amp Makers
ALO Audio --- Small U.S. headphone amp maker and etailer of related high-end audio gear.
Antelope Audio --- Small U.K. company specializing in computer headphone amp/DACs, and pro-A/V synchronizing clocks.
Audio-GD --- Maker of headphone amps and DACs.
Burnson Audio --- Cool, an Australian headphone amp maker.
CIA Audio --- Small U.S. maker of low-cost audiophile products including a headphone amp.
Creek --- A U.K. high-end audio electronics maker with a number of headphone amps.
Eddie Current --- Maker of retro-styled vacuum tube headphone amplifiers.
Firestone Audio --- Dutch maker of a variety of headphone amps and DACs.
Grace Design --- U.S. maker of Pro-Audio gear, including headphone amps.
Graham Slee --- U.K. maker of headphone amps, other audio electronics, and DIY kits.
HeadAmp --- Small U.S. extreme high-quality headphone amp maker.
HiFiMAN --- Maker of a variety of headphone amps and related products.
iBasso --- Maker of a variety of headphone amplifiers.
Luxman --- Japanese high-end audio electronics maker.
Music Hall --- Manufactures Music Hall brand electronics including a headphone amp. Importer/distributer of audiophile electronics.
Musical Fidelity --- A U.K. maker of High-end audio gear, and one of the early entrants into headphone amp manufacture.
NuForce --- Small California maker of personal audio and computer electronics.
Practical Devices --- Maker and on-line direct seller of portable headphone amplifiers.
Ray Samuels Audio --- Small U.S. maker of a wide array of headphone amps and related gear.
RudiStor --- Maker of a variety of high-end dynamic and electrostatic headphone amplifiers.
Sound Performance Lab --- Maker of pro-audio gear including a few headphone amps.
Todd the Vinyl Junkie --- High-end headphone amp maker, and etailer of related gear.
Woo Audio --- Maker of a variety of vacuum tube headphone amps, and reseller of some high-end headphones.
Whiplash Audio Dynamics --- Headphone electronics and accessory maker, and etailer of a variety of related products.

Portable Media Players
HiFiMAN --- Maker of a variety of portable audio players, and other related headphone products.

Computer Audio Gear
ALO Audio --- Small U.S. maker of digital audio gear and etailer of related high-end gear.
Altec Lansing --- Mid-size U.S. maker of low-cost consumer computer audio gear.
April Music --- Korean maker of USB DAC and other audiophile electronics.
Benchmark Media --- U.S. maker of pro and audiophile DACs, ADCs, and other pro gear.
Beresford Media & Electronics --- Small U.K. firm building DACs and accessories.
CEntrance --- Maker of High-resolution USB DACs for both portable and home use.
Devilsound --- U.K. maker of USB DAC and S/PDIF converter in a cable.
Firestone Audio --- Dutch maker of a variety of headphone amps and DACs.
NuForce --- Small California maker of personal audio and computer electronics.
Lavery Engineering --- Maker of a number of high-end DACs.

Computer Audio Software
Audiofile Engineering --- Small U.S. firm making various Apple OS and iOS audio software including Fidelia player.
Channel D --- Maker of Pure Music and Pure Vinyl Apple OS music software.
Sonic Studio --- Maker of Amarra and other audiophile and pro-audio computer audio software.

Home Devices
Antelope Audio --- Small U.K. company specializing in computer headphone amp/DACs, and pro-A/V synchronizing clocks.

Providers of Music
HD Tracks --- Great on-line source for high-resolution music downloads.

Accessories and Other Products
Comply --- Makes after-market foam tip replacecements for many IEM brands.
Headphile --- Custom wooden modifications to headphones.
JMoney Audio --- Maker of leather replacement earpads and headband pads, and wood modifications to headphones.
Lenntek --- Maker of IEMs and iDevice accessories.
Moon Audio --- Maker of after market headphone cables.
Maximo --- Maker of IEMs and iDevice accessories.
Zu Audio --- Maker of headphone aftermarket cables.

DIY Links
Parts Connection --- etailer of audiophile grade DIY parts.
AMB Laboratories DIY Audio Site - The best source I know of for well-documented and fully supported projects as well as a huge list of resource links.
Pete Millett's DIY Audio Pages - An exceptional resource for both projects and publications. The projects run the gamut from cheap and easy to complex and expensive.
DIY Audio Forums - A forum focused on DIY audio projects of all types.
Digikey and Mouser - The two gigantic etailers for general electronic parts.
Parts Connexion - Great source for high-quality and esoteric audiophile parts.
Sonic Craft - Another great source for exotic parts and stuff.
Allied Electronics - Great source for tools and consumables.
Radio Shack - Surprisingly good in a pinch for tools and parts.
Markertek - A good source for wire/cable components.

Personal Audio Retailers
ALO Audio --- Small U.S. etailer of personal and headphone audio gear.
Audio Advisor --- Mid-size U.S. etailer of audiophile gear of all types.
Audio Cubes --- Japanese etailer specializing in selling hard-to-find Japanese products direct to overseas customers.
Earphone Solutions --- Long-time earphone etailer, same company as headphonesolutions.com.
Head Direct --- etailer of HiFiMAN and other makers of specialty headphone and personal audio gear.
HeadRoom --- The original headphone hobby company; retailer of headphones, and maker of headphone amps and DACs.
Headphones.com --- Etailer of a broad line of headphones, and a sub-brand of the Alltech Store network. Headphone Solutions --- Long-time headphone etailer, same company as earphonesolutions.com.
Jaben Audio --- On-lineheadphone gear etailer, also with stores in SE Asia.
Moon Audio --- etailer of high-end headphones and related gear.
Sound Earphones --- etailer of high-end headphones, headphone amps, and accessories.
Todd the Vinyl Junkie --- Montana etailer of various high-end phono and headphone gear.
Uncle Wilson's --- On-line etailer of a wide variety of headphone and personal audio related gear.
Woo Audio --- Maker of a variety of vacuum tube headphone amps, and reseller of some high-end headphones.

Forums of Interest

Websites, Periodicals, and Blogs of Interest
Audio Musings --- Director of Acoustic Research for Harman International Sean Olive's blog.
NwAvGuy --- Hard-core objective measurements and review blog.