Octave - German manufacturer of integrated, power and monoblock amplifiers such as Jubilee line, pre-amplifiers and outboard power supply upgrade. Lindemann Audiotechnik - Manufacturer of audio technology such as super audio CD player, stereo control amplifier, and dual mono power amplifier. Germany. Artec France - Manufacturer of high end solid-state amplifiers and pre-amplifiers. France. darTZeel - Makes a power amplifier and preamplifier. Switzerland. [English, French] Thylenea - Design a range of amplifiers and pre-amplifiers. France. Atma-Sphere - Manufacturer of triode, class A, balanced OTL amplifiers and preamplifiers. Butler Audio - Manufacturer of tube class A monoblock amplifier and "Thermionic" vacuum tube multichannel power amplifier. Docet Lector - Tube-valve class "A" preamplifier and preamplifier and processor for home theater, hybrid tube+mosfet power amplifier and multichannel amplifier and tube-valve cd player and digital analog converter. Klyne Audio Arts - US manufacturer of System Six pre-amplifier, System Seven pre-amplifier and interconnects. MastersounD - Italian tubes monoblocks and integrated amplifiers and pre-amplifiers. Space-Tech Hi-End Audio Laboratory - Canadian manufacturers design and custom made of vacuum tube pre-amplifiers and power amplifiers, integrated amplifier, buffers, active crossovers, CD players, DAC's and loudspeakers. Microprocessor design and engineering. Sonneteer - Makes power and dual mono integrated amplifiers and pre-amplifiers. UK. Jeff Rowland Design Group - High end manufacturer of stereo, monoblock, integrated amplifier and pre-amplifier, phono pre-amplifier power supplies such as Synergy, Cadence and Concentra products line. ATI - Amplifier Technologies Inc. - Manufacturers of preamp/processor, stereo, multi channel and distribution amplifiers utilizing differential drive amplifier technology. NeoFidelity - Korea manufacturer specializes in digital audio signal processing such as digital power amplification, surround and DSP programming. Halcro Amplifiers - Manufacturers of mono, power, integrated, and pre amplifiers for stereo reproduction and home theater. Marsh Sound Design - Manufacturer of home theater processors, multi channels, stereo, power amplifiers and pre-amplifiers with a distinctive design. DeHavilland Electric Amplifier Company - Manufacturer of two class "A" tube amplifiers: the Aries 845-G and the GM70. Marchand Electronics Inc. - Manufacturers of equipment such as electronic crossover networks, both solid state and vacuum tube and modular audio amplifiers. Power Modules - Power amplifiers, phono and vacuum tube pre-amplifiers from David Belles. Placette Audio - Preamps from Idaho built around heroically engineered volume controls. Boulder - Colorado manufacturer of stereo and mono amplifier, DAC and phono preamplifier. IRD Audio - Thailand manufacturer of power, monoblock and integrated amplifiers and pre-amplifiers. Burning Blue Audio - Manufacturer of portable USB headphone amplifiers and desktop amps for digital and computer audio. Dedicated to headphone amplification. Vitus Audio - High End Audio products: Amplifier, phonostages, linestages and powerstages. Zenn Audio Components - Amplifier designed and handcrafted in Singapore. Edge Electronics - Power, multi-channels, integrated amplifiers, pre-amplifiers using the proprietary Laser Optical Bias Circuitry technology. ME Sound - Amplifiers and pre-amplifiers that integrate zero loop feedback and near constant operating temperature technologies. Monolithic Sound - Passive and active pre-amplifier, phono pre-amplifier, dual mono and digital/analog power supply and "perpetual power plant" power supply. Evolve Power Amplifiers - Tube and hybrid amplifiers by Shinichi Kamijo. Embla Audio - Monoblocks and conventional stereo amplifiers. Coda Technologies - FET line stages and phono preamplifiers and bias class A power and integrated amplifiers such as Unison integrated amplifier. Edward Amplification Co. - Manufacturer of musical instrument amplifiers. Leem Products Co. - Guitar amplifiers and other sound reinforcement products. Lamm Industries - Tube and transistor amplifiers and preamplifiers. NAT - Nikic Audio Team - Single-ended triode, low- or no-feedback amplifiers and preamplifiers. Hand-wound transformers. Transcendent Sound - Manufacturer of tube amplifiers, DIY audio kit, audio projects, and preamplifiers. Provides forum and product information. Wavelength Audio - Single-ended tube designs and custom guitar amps. Audion - Makes single-ended power amplifiers consist of triode and pentode type valves, valves pre-amplifiers, kits and components. Korato - Manufacturers of tube and solid state amplifiers and pre-amplifiers. Based in Belgrade, Serbia. L C Audio Technology - Manufacturers of power amplifiers that use pulse amplifier module and makes also cables. One Electron - Manufacturer of audio transformers and amplifiers. RobyattAudio - Manufacturer of tube amplifiers, preamplifiers and loudspeaker. McAlister Audio - Specializing in vacuum tube amplifiers. Custom design and build high end audio amplifiers. Repairs and restoration. Canada. Dynavector - Manufacturer of phono, power, and pre-amplifiers. Australia. Prism Audio - Manufacturers of power amplifier modules, valve amplifiers, class D amplifiers and power supplies. UK. Channel Islands Audio - Specialized in mono, stereo, headphone and phono amplifiers, and active and active pre-amplifiers. USA. Electronic Visionary Systems - Manufacturer of class D modified UCD amplifier module and power cords. USA. Metaxas - Manufacturer of audio amplifiers, pre-amplifiers and cables. Scandinavia. NuForce - Design and makes audio mono, powered, multi-channel and integrated amplifiers, preamplifiers and accessories such as power center distributor. USA. PrimaLuna - Makes and design handmade vacuum-tube amplifiers and preamplifiers. Netherlands. Swedish Audio Technology - Makes and design remote controlled integrated amplifier and CD player. Sweden. Wavac Audio Lab. - Manufacturer of hi-fi single-ended directly heated triode power amplifiers, phono equalizer, attenuators and AC conditioners. Japan. AmpliVox Sound Systems - Manufacturer of portable public address systems, amplifiers, wireless remote powered speaker systems, and lecterns with built-in sound system. USA. London Power / Power Press Publishing - Power amplifiers and amplifier products, do-it-yourself kits, and power press books by Kevin O'Connor. Canada. MagnaTec - Manufacturer of amplifier range of class D intended for use in professional audio systems. UK. Audio Amplifier Kits - Makes high-fidelity high powered MOSFET amplifier modules. Anderson Electronic - Makes headhone amplifier, power and preamplifier. Germany. Audia - Makes a line of amplifiers and pre-amplifiers that use the current feedback, rather than the usual voltage feedback. Italy. DB Systems - Manufacturer of home audio equipment, including preamps, power amps, electronic crossovers, tone control, phase inverter, and accessories. USA. E.A.R. USA - Makes tube and solid state stereo and phono preamplifiers and amplifiers, and headphone amplifier. USA. First Sound Audio - Manufacturer of solid state amplifiers and pre-amplifiers. USA. Grace Design - Makes microphone, headphone amplifiers, monitor controler and portable DC powered microphone amplifiers. USA. Jiaxing Music Space Time Co., Ltd. - Manufacturer of tube audio amplifiers and accessories. China. Laboga - Makes guitar tube amplifier, cabinet and hi-fi stereo valve amplifier. Poland. Canor Audio - Development and manufacture of audio components. Design and production of audio tube amplifiers. Slovakia. SRS Labs, Inc. - Develops, markets and licenses audio technologies which create an immersive three-dimensional sound for consumer home audio, computer multimedia, car audio, professional sound and video and arcade games markets. (Nasdaq: SRSL) Trends Audio - Manufacturer of a mini 15W amplifier and USB audio converter. Hong Kong, China. LFD - Manufacturer of accessories, amplifiers, cables, power cords, and linestage. UK. South Texas Amp Co. - Custom tube amp design, build, repair, and restoration. USA. Red Wine Audio - Manufacturer of monoblocks, stereo amplifiers, music server and source select switch. USA. Plinius Audio - New Zealand manufacturer of Odeon amplifier, pre-amplifier, integrated and Jarrah phono amplifier. Carver mk II - Carver audio mk II modified upgraded amplifiers. Red Dragon Audio - Manufacturer of high end Class-D mono blocks and custom audio amplifiers. Devialet - High end audio integrated amplifier based on a hybrid amplification technology: ADH. France. Wyred 4 Sound - Manufacturer of solid state amplifier and integrated amplifier, pre-amplifiers, cables and DAC. Matthew James - Manufacturer of amplifiers Rhapsody 2 or 3 channels, strings interconnect/speaker cables and podium isolation fee. USA. Astra Suite - Supplier of hi-fi French amplification from Lavardin and Neodio. Singapore. Matisse - Makes mono block and stereo amplifiers, pre-amplifiers, phono pre-amplifiers and cables. Aaron - Manufacturer of high-end pre-amplifiers, stereo and three channels amplifiers. Germany.