ATI - Amplifier Technologies Inc.
Manufacturers of preamp/processor, stereo, multi channel and distribution amplifiers utilizing differential drive amplifier technology.
http://www.ati-amp.com/

NeoFidelity
Korea manufacturer specializes in digital audio signal processing such as digital power amplification, surround and DSP programming.
http://www.neofidelity.com

Halcro Amplifiers
Manufacturers of mono, power, integrated, and pre amplifiers for stereo reproduction and home theater.
http://www.halcro.com

Marsh Sound Design
Manufacturer of home theater processors, multi channels, stereo, power amplifiers and pre-amplifiers with a distinctive design.
http://marshsounddesign.com/

DeHavilland Electric Amplifier Company
Manufacturer of two class "A" tube amplifiers: the Aries 845-G and the GM70.
http://www.dehavillandhifi.com

Marchand Electronics Inc.
Manufacturers of equipment such as electronic crossover networks, both solid state and vacuum tube and modular audio amplifiers.
http://www.marchandelec.com

Power Modules
Power amplifiers, phono and vacuum tube pre-amplifiers from David Belles.
http://www.powermodules.com/

Reflection Audio Design
Manufacturer of the OM1-Quantum pre-amplifier, amplifiers, AC4 power supply and DC12 battery power supply from Stephen Balliet.
http://www.reflectionaudio.com/

Placette Audio
Preamps from Idaho built around heroically engineered volume controls.
http://www.placetteaudio.com/

Boulder
Colorado manufacturer of stereo and mono amplifier, DAC and phono preamplifier.
http://www.boulderamp.com/

Chapter Audio
British manufacturer of one power amplifier and one pre-amplifier.
http://www.chapteraudio.co.uk/

IRD Audio
Thailand manufacturer of power, monoblock and integrated amplifiers and pre-amplifiers.
http://www.ird-thailand.com

Aria Audio
Manufacturer of tube/transistor hybrid amplifiers.
http://www.ariaaudio.com

Mactone
Electron tubed amplifiers and pre-emplifiers maker from Japan.
http://www.mactone.com/

Burning Blue Audio
Manufacturer of portable USB headphone amplifiers and desktop amps for digital and computer audio. Dedicated to headphone amplification.
http://burningblueaudio.com

Vitus Audio
High End Audio products: Amplifier, phonostages, linestages and powerstages.
http://www.vitusaudio.com/

Zenn Audio Components
Amplifier designed and handcrafted in Singapore.
http://www.zenn.com.sg/

Plinius Audio
New Zealand manufacturer of Odeon amplifier, pre-amplifier, integrated and Jarrah phono amplifier.
http://www.pliniusaudio.com/

Edge Electronics
Power, multi-channels, integrated amplifiers, pre-amplifiers using the proprietary Laser Optical Bias Circuitry technology.
http://www.edgeamp.com/

ME Sound
Amplifiers and pre-amplifiers that integrate zero loop feedback and near constant operating temperature technologies.
http://www.me-au.com

Sherbourn Technologies
Information and downloadable documentation amplifiers and pre-amplifiers/tuners.
http://www.sherbourn.com/

Octave
German manufacturer of integrated, power and monoblock amplifiers such as Jubilee line, pre-amplifiers and outboard power supply upgrade.
http://www.octave.de

Monolithic Sound
Passive and active pre-amplifier, phono pre-amplifier, dual mono and digital/analog power supply and "perpetual power plant" power supply.
http://www.monolithicsound.com/

Evolve Power Amplifiers
Tube and hybrid amplifiers by Shinichi Kamijo.
http://www.ne.jp/asahi/evo/amp/

Embla Audio
Monoblocks and conventional stereo amplifiers.
http://www.emblaaudio.no

Delta Studio Amplifiers
Manufacturer of tube stereo and monoblock amplifiers.
http://www.amplifiers.delta-studio.com.pl/

Coda Technologies
FET line stages and phono preamplifiers and bias class A power and integrated amplifiers such as Unison integrated amplifier.
http://www.coda-continuum.com/

Linar Audio
Quebec amplifier manufacturer for audiophile.
http://www.linaraudio.com

Edward Amplification Co.
Manufacturer of musical instrument amplifiers.
http://www.edwardamp.com/

Leem Products Co.
Guitar amplifiers and other sound reinforcement products.
http://www.leem.co.kr/

Vintone Circuits
Designer and builder of custom guitar amplifiers and speakers housed in exotic hardwood cabinets.
http://vintone.com

Talisman Audio
High-end small manufacturer of one line of product: power and monoblock amplifier, preamplifier and headphone amplifiers.
http://www.talisman-audio.com/

Lamm Industries
Tube and transistor amplifiers and preamplifiers.
http://www.lammindustries.com/

NAT - Nikic Audio Team
Single-ended triode, low- or no-feedback amplifiers and preamplifiers. Hand-wound transformers.
http://www.nataudio.com

Transcendent Sound
Manufacturer of tube amplifiers, DIY audio kit, audio projects, and preamplifiers. Provides forum and product information.
http://www.transcendentsound.com/

Wavelength Audio
Single-ended tube designs and custom guitar amps.
http://www.wavelengthaudio.com/

West Laboratories
Designer and manufacturer of guitar and bass amplifiers.
http://westlaboratories.com/

Audio
Makes single-ended power amplifiers consist of triode and pentode type valves, valves pre-amplifiers, kits and components.
http://www.audion.co.uk/

Korato
Manufacturers of tube and solid state amplifiers and pre-amplifiers. Based in Belgrade, Serbia.
http://www.korato.com/

L C Audio Technology
Manufacturers of power amplifiers that use pulse amplifier module and makes also cables.
http://www.lcaudio.dk/

One Electron
Manufacturer of audio transformers and amplifiers.
http://www.one-electron.com/

RobyattAudio
Manufacturer of tube amplifiers, preamplifiers and loudspeaker.
http://www.robyattaudio.com/

McAlister Audio
Specializing in vacuum tube amplifiers. Custom design and build high end audio amplifiers. Repairs and restoration. Canada.
http://www.mcalisteraudio.com

Palette Amps
Hand made guitar amplifier cabinets. USA.
http://www.paletteamps.com

Aaron
Manufacturer of high-end pre-amplifiers, stereo and three channels amplifiers. Germany.
http://aaron.hifi.net/

Artec France
Manufacturer of high end solid-state amplifiers and pre-amplifiers. France.
http://www.artec-france.com

Dynavector
Manufacturer of phono, power, and pre-amplifiers. Australia.
http://www.dynavector.com

Thylenea
Design a range of amplifiers and pre-amplifiers. France.
http://www.thylenea.com

darTZeel
Makes a power amplifier and preamplifier. Switzerland. [English, French]
http://www.dartzeel.com/

D2Audio
Makes intelligent digital amplifier modules for the audio industry. USA.
http://www.d2audio.com

Burman Amplification
Suppliers of hand wired guitar amplifiers. UK.
http://www.burmanamp.co.uk/

Prism Audio
Manufacturers of power amplifier modules, valve amplifiers, class D amplifiers and power supplies. UK.
http://www.prismaudio.co.uk

Dussun
Previously known as Korsun, manufacturer of integrated, multi-channel and stereo amplifiers in China.
http://www.dussun.com/english/

Channel Islands Audio
Specialized in mono, stereo, headphone and phono amplifiers, and active and active pre-amplifiers. USA.
http://www.ciaudio.com/

Chimera Labs
Produces high end audio products such as cables, tube amplifier, and parts. USA.
http://www.chimeralabs.com/

Dynamic Precision
Makes phono and stereo preamplifiers, power amplifiers and crossovers for home and professionnal. Norway.
http://www.dynamicprecision.no/

Electronic Visionary Systems
Manufacturer of class D modified UCD amplifier module and power cords. USA.
http://www.tweakaudio.com/

James Audio
Makes and design guitar and music amplifiers. USA.
http://www.jamesaudio.com/

Matisse
Makes mono block and stereo amplifiers, pre-amplifiers, phono pre-amplifiers and cables.
http://www.signatureaudio.com/matisse.html

Metaxas
Manufacturer of audio amplifiers, pre-amplifiers and cables. Scandinavia.
http://www.metaxas.com/

NuForce
Design and makes audio mono, powered, multi-channel and integrated amplifiers, preamplifiers and accessories such as power center distributor. USA.
http://www.nuforce.com/

Portal Audio
Manufacturer of the Paladin balanced monoblock power amplifier and Panache Integrated amplifier.
http://www.portalaudio.com/

PrimaLuna
Makes and design hand made vacuum-tube amplifiers and preamplifiers. Netherlands.
http://www.primaluna.nl/

Swedish Audio Technology
Makes and design remote controlled integrated amplifier and CD player. Sweden.
http://www.bladelius.com/SAT/

Wavac Audio Lab.
Manufacturer of hi-fi single-ended directly heated triode power amplifiers, phono equalizer, attenuators and AC conditioners. Japan.
http://www.wavac-audio.jp/

Red Wine Audio
Manufacturer of monoblocks, stereo amplifiers, music server and source select switch. USA.
http://www.redwineaudio.com/

Trends Audio
Manufacturer of a mini 15W amplifier and USB audio converter. Hong Kong, China.
http://www.trendsaudio.com/EN/

LFD
Manufacturer of accessories, amplifiers, cables, power cords, and linestage. UK.
http://www.aanvilaudio.u-net.com/lfd_page7.htm

AmpliVox Sound Systems
Manufacturer of portable public address systems, amplifiers, wireless remote powered speaker systems, and lecterns with built-in sound system. USA.
http://www.ampli.com

MGL Audio Laboratories
Manufacturer of audio amplifiers designed for music servers. USA.
http://www.mglaudiolabs.com

We Buy Amps
Buys guitar amps from musicians and collectors. Provides a photo gallery of collectible amps.
http://www.we-buy-amps.com

London Power / Power Press Publishing
Power amplifiers and amplifier products, do-it-yourself kits, and power press books by Kevin O'Connor. Canada.
http://www.londonpower.com

MagnaTec
Manufacturer of amplifier range of class D intended for use in professional audio systems. UK.
http://www.amplifier.co.uk

Audio Amplifier Kits
Makes high-fidelity high powered MOSFET amplifier modules.
http://www.aussieamplifiers.com

Anderson Electronic
Makes headhone amplifier, power and preamplifier. Germany.
http://www.amity.eu/

Coph Nia
Development and makes stereo power and phono amplifiers. Sweden.
http://www.coph-nia.com/

Sonneteer
Makes power and dual mono integrated amplifiers and pre-amplifiers. UK.
http://www.sonneteer.co.uk/

Angstrom Research
Manufacturer of amplifiers, preamplifiers and cables. Italy.
http://www.angstromresearch.com/

Audia
Makes a line of amplifiers and pre-amplifiers that use the current feedback, rather than the usual voltage feedback. Italy.
http://www.audia.it

Cantina sperimentale
Manufacturer of solid state power amplifier, vacuum tube preamplifier and phono stage, external power supply and accessories. Italy.
http://www.cantinasperimentale.it/

Damoka
Manufacturer of amplifiers, preamplifiers, phono stage and power supply. USA.
http://www.damoka.net/

DB Systems
Manufacturer of home audio equipment, including preamps, power amps, electronic crossovers, tone control, phase inverter, and accessories. USA.
http://www.dbsystemsaudio.com/

Diva Audio Classics
Manufacturer of preamps, power and phono amplifiers, cables, and cones. Singapore.
http://www.divaaudio.com/

Dodd Audio
Makes battery powered preamps, mono amplifiers, and power supplies. USA.
http://www.doddaudio.biz

E.A.R. USA
Makes tube and solid state stereo and phono preamplifiers and amplifiers, and headphone amplifier. USA.
http://www.ear-usa.com/

First Sound Audio
Manufacturer of solid state amplifiers and pre-amplifiers. USA.
http://www.firstsoundaudio.com/

Fosgate Audionics
Manufacturer of audio video preamp, tuner, and modular multi-channel amplifier. USA.
http://www.fosgateaudionics.com

Gemstone Audio
Manufacturer of class A/AB amplifiers. USA.
http://www.gemstoneaudio.com

Kaye Audio
Manufacturer of Moscode amplifiers product line. USA.
http://moscode.home.att.net/

Grace Design
Makes microphone, headphone amplifiers, monitor controler and portable DC powered microphone amplifiers. USA.
http://www.gracedesign.com/

H20 Audio
Manufacturer of solid state amplifiers. USA.
http://www.iceh2oaudio.com/

Lindemann Audiotechnik
Manufacturer of audio technology such as super audio CD player, stereo control amplifier, and dual mono power amplifier. Germany.
http://www.lindemann-audiotechnik.de

Luminance Audio
Makes an amplifier that work at 250 volt per microsesond. Canada.
http://www.luminanceaudio.com/