Electronics Manufacturers: Power Amps, Preamps, Integrated Amps
​​Vacuum Tube-based and Vacuum Tube/Solid State Hybrids:

  • Ampsandsound - A small family business in Southern California that hand builds Power Amplifiers, Headphone Amplifiers and a Step Up Transformer.  They also have a line of accessories and a 2-way and a 3-way loudspeaker.  Their amplifier designs are born from a love for the legendary vacuum tube power amplifiers of midcentury America.
  • Atma-sphere - Atma-Sphere is a small company in Saint Paul, MN that has been making world-class vacuum tube amplifiers since 1976.  They are known for their unique approach to circuit design, resulting in multiple patents and the creation of the first, truly reliable Output TransformerLess (OTL) amplifiers.  The company made the first balanced-line products in the world of high-end audio, including the MP-1, which was the world's first balanced-line preamp.  Atma-Sphere is the world's premiere OTL and triode amplifier manufacturer using a Balanced Differential Design®.  All of their amps and preamps are hand-crafted and often optioned according to each customer's needs. Their components are hand-selected; often custom-manufactured especially for them, including their wire.
  • Audio by Van Alstine - The company is located in Woodbury, MN and was founded by Frank Van Alstine in the 1980s.  They manufacture of solid-state power amps & solid-state, vacuum tube hybrid preamps (Fet Valve CFR preamplifier &  Transcendence 10 RB Preamplifier), digital preamps and a DAC. They are a direct-sales company.
  • Audio Note UK - A UK-based company founded in 1991.  They are the largest European manufacturer of ultra-performance valve-based audio equipment.  Their products include electronics for both analogue and digital music.  Their analogue products include turntables, tonearms, cartridges and step-up transformers.  Their digital music products include CD players, CD transports and DACs.  They also manufacture vacuum tube-based power amps, preamps, integrated amps, loudspeakers and cables.
  • ​Audio Research - A Minneapolis, Minnesota-based manufacturer of tube-based audiophile amps, preamps, integrated amps, phono preamps and DACs.  The company was founded by Bill Johnson in 1970.
  • Balanced Audio Technology (BAT) - Founded in 1995 and based in Wilmington, DE, this company manufactures high-end audiophile fully-balanced tube and solid-state electronics, including amps, preamps, integrated amps and phono preamps.
  • Black Ice Audio (formerly Jolida) - An American high-end audio manufacturer specializing in vacuum tube electronics, offering products like power amplifiers, a DAC Transport/DSD WIFI Streamer, a preamplifier, integrated amplifiers, tube DACs, phono preamplifiers, and headphone preamplifiers.  The company collaborated heavily with legendary audio designer Jim Fosgate to create circuits that blend classic, lush tube warmth with the speed and dynamics typically found in solid-state gear.  Their current lineup is highly regarded by audiophiles for delivering premium, "giant-killing" performance at relatively accessible price tiers.
  • Border Patrol - A company located in Bristow, VA that manufactures a number of Vacuum Tube Amplifiers that use the ever-popular 300B triode in single-ended, parallel single-ended and push-pull configurations, as well as a DAC that uses a tube rectified power supply.
  • Cary Audio Design - A North Carolina-based manufacturer of highly-regarded vacuum tube amplifiers, preamplifiers and CD players, as well as solid state Home Theater electronics.​
  • Conrad-Johnson - A manufacturer of vacuum tube-based audiophile power amps, preamps, control amps, headphone amps and  phono preamps.  The company was founded in 1977 by Dr. William Conrad and Dr. Lewis Johnson.
  • Convergent Audio Technology (CAT) - A high-end manufacturer of audiophile vacuum tube-based power amps and preamps.  The company is located in Rush, NY and was founded by Ken Stevens in 1993. CAT’s philosophy is to design their products to neither add to, nor detract from, the music.
  • David Berning - Established in 1974, The David Berning Company manufactures Vacuum Tube Audio Amplifiers and Preamps, as well as a guitar amplifier.  Their Vacuum Tube Audio Amplifiers are based on a unique Impedance Converter that replaces the traditional audio power output transformer and greatly extends and improves amplifier performance. They call their technology "ZOTL" for Zero-Hysteresis Output Transformerless.  Operating at a fixed high-frequency without traditional audio output transformers, the ZOTL Impedance Converter eliminates the frequency-dependent performance limitations inherent in all other transformer coupled tube amps.
  • Decware - Small, direct sales manufacturer from Peoria, IL that produces the Zen line of vacuum tube-based preamps & amplifiers.
  • Jadis Electronics - A French manufacturer of high-end vacuum tube-based audiophile power amps, preamps, integrated amps, phono preamps, CD players and DACs.  The company was founded by André Calmettes in 1983.
  • Luxman - A Japanese company founded in 1925 that manufactures both vacuum tube-based and solid-state electronics for high-end, two channel home stereo systems. Their product line includes power amps, preamps, headphone amps, integrated amps, CD players, SACD players, USB DACs, phono preamps, turntables, a moving coil (MC) cartridge and cables.
  • New Audio Frontiers - The company was founded by Maurizio and Ferdinando Zanichelli in 1980.  It is located in Viadana, Italy.  The company was born from passion for music and from the desire of recreating its magic through a sound production that only live listening can create.  They manufacture Vacuum Tube-based Amps, Preamps, Integrated Amps and Phono Stages.
  • Purity Audio Design - Manufacturer of Vacuum Tube-Based Preamps.  
  • Raven Audio - A Texas-based designer and manufacturer of award-winning high-performance consumer-level vacuum tube amplifiers.   Their product line includes vacuum tube-based power amps and integrated amps, cables and loudspeakers.
  • Rogue Audio - The company was founded in 1996 by Mark O'Brien, who worked previously at Bell Labs.  The company is located in Pennsylvania and manufactures high-end Vacuum Tube-based Amps, Preamps, Integrated Amps, Headphone Amps and Phono Stages.
  • Schiit Audio - An American privately held audio company founded in June, 2010 by audio industry veterans Jason Stoddard and Mike Moffat that specializes in the design, development, and production of various high-fidelity audio products targeted at the audiophile market, such as standalone digital-to-analog converters (DACs), headphone amplifiers, equalizers, preamplifiers, and speaker amplifiers, as well as combination DAC and amplifier products. The company is based in California with additional manufacturing operations in Texas.  All of their products are
          no-compromise high-end audiophile designs with unique technologies, yet at affordable            prices. They are known to the audiophile community as a budget-priced audiophile                    equipment manufacturer.  Their designs include both tubes and solid-state devices.
  • Valve Amplification Company (VAC) - VAC was founded in 1990 by Kevin Hayes and his father, Channing W. Hayes in Sarasota, FL.  It's equipment is very highly regarded. VAC manufactures high-end audiophile vacuum tube-based power amps, preamps and integrated amps.
  • Von Gaylord Audio - 
  • VTL Amplifiers, Inc. - High end manufacturer of Vacuum Tube electronics based in Cino, CA.  Their equipment is handmade in  the USA.
  • Zesto Audio - Zesto Audio was founded by George and Carolyn Counnas in 2010 in Thousand Oaks, CA.  Zesto Audio is a manufacturer of fine analog audio electronics, specializing in vacuum tube technology for the audiophile market.  Their product line includes a step up transformer, three different phonostages, a preamplifier and two high-powered amplifiers.
Solid State Electronics:
  • Audia Flight - An Italian company that designs and manufactures high quality home audio components.  The company manufactures solid-state power amps, preamps, integrated amps, CD players and SACD players.  It was founded in 1996 by Massimiliano Marzi and Andrea Nardini.
  • Audio by Van Alstine - The company is located in Woodbury, MN and was founded by Frank Van Alstine in the 1980s.  They manufacture of solid-state power amps & solid-state, vacuum tube hybrid preamps, digital preamps and a DAC. They are a direct-sales company.
  • Benchmark Media Systems - Benchmark manufactures high-end audiophile electronics including power amps, line amps (preamps), headphone amps, DACs and cables. Benchmark began in 1983 as the "Benchmark Sound Company", a small operation working out of a garage in Garland, Texas.   The company was incorporated as Benchmark Media Systems, in 1985, and relocated to Syracuse, NY. 
  • Bluesound - Manufacturer of wireless premium Hi-Res multi-room streamers and speakers. 
  • Boulder Amplifiers - A company located near Boulder, CO that has been building amplifiers since the mid-1980s. They started out building amps for pro audio applications in recording studios and moved into high-end audiophile stereo amps in the mid 1990s.  They have won numerous awards over the years, and their current line of products include solid-state power amps, preamps, integrated amps, phono preamps, a preamp/DAC and DACs.
  • Bricasti Design - Manufacturer of audiophile Amps, Preamp, DACs, Streamers and Network Players.  The company is based in Shirley, MA.
  • Bryston - A Canadian-based manufacturer of audiophile solid-state power amps, preamps, phono preamps, DACs, power isolation devices, Home Theater amps and preamps, and loudspeakers (active, passive and wireless).
  • Burmester Audio - A German high-end audiophile company that manufactures a full line of products for home audio use.  Their product line includes Turntables, Tonearms, Moving Coil Cartridges, CD Players, floor-standing and In-wall Loudspeakers, Solid State Preamplifiers, Power Amplifiers, Integrated Amps, a Power Conditioner and for digital music, Network Music Servers.
  • Chord Electronics - A British company that manufactures Solid State electronics including Streamers, Phono Stages, Upscalers, DACs (both standalone and mobile), Preamps, Power Amps and Integrated Amps.
  • Classé - A manufacturer of high-end audiophile Solid State Power Amps and Preamps.  Founded in  in 1979 by Mike Viglas and David Reich.
  • Dan D'Agostino Master Audio Systems - A manufacturer of high-end audiophile solid-state fully-balanced electronics including power amps, preamps, integrated amps and phono preamps.  The company is located in Cave Creek, AZ and was founded in 2011.
  • Empirical Design - A company from Oregon that manufactures high-end audio analog and digital interconnects, speaker and power cables, and computer cables. They sell primarily to end users over the Internet.
  • Esoteric - A Japanese manufacturer of high-end audiophile electronics. The pride and mission of Esoteric is to reproduce the Original Master Sound.  Their products include solid-state power amps, preamp, integrated amps, phono preamps, SACD/CD players, DACs, master clock generators, turntables, and high-end audio cables.  https://www.esoteric.jp/en/category/high-end_audio_cables
  • eXemplar audio - A company that build tube electronics, offers modification services to upgrade and enhance virtually any tube audio equipment and does custom designs.
  • Grandinote - An Italian company producing a line of audiophile loudspeakers and solid-state electronics. The company was founded by it's current CEO, Massimiliano Magri, an electronic engineer. The company's electronics use "Magnetosolid® Technology", which uses "tube amplifier schematics" with solid state devices.  Their CEO claims that he has designed the best marriage of tube and solid-state electronics and that all Grandinote devices use solid state components, but their sound is rich and natural, like tube devices.
  • Infigo Audio - A Canadian company founded in 2020 by Hans Looman that manufactures high-end solid-state power amps, preamps, DACs, and cables.
  • Jeff Rowland Design Group - A manufacturer of high-end audiophile solid-state preamps, power amps, integrated amps, DACs and Power Storage Units.  The company was founded in 1988 and is located in Colorado Springs, CO.
  • JMF Audio - A French company that manufactures high-end audiophile solid-state electronics for home stereo and recording studio applications.  The  company was founded in 1985 by electronics pioneer Jean-Marie Fusilier.  Their product line includes power amps, a preamp, phono preamps, 2 different mains power line filtering and distribution devices, a CD/SACD/Blu-ray Audio transport, speaker cables, interconnect cables, digital audio (AES-EBU) cables & power cords.
  • Luxman - A Japanese company founded in 1925 that manufactures both vacuum tube-based and solid-state electronics for high-end, two channel home stereo systems. Their product line includes power amps, preamps, headphone amps, integrated amps, CD players, SACD players, USB DACs, phono preamps, turntables, a moving coil (MC) cartridge and cables. 
  • Naim Audio
  • PS Audio - A manufacturer of high-end solid state electronics including, power amps, preamps, DACs, power regenerators, streamers and now, speakers located in Boulder, CO.  PS Audio was founded in 1973 by audio designers Paul McGowan and Stan Warren (with whose initials the company was named). 
  • Sanders Sound Systems - An Internet-Direct company located in Colorado that specializes in Electrostatic Loudspeakers (ESL), Amplifiers and Preamps.
  • van den Hul - A Netherlands-based company founded in 1980.  They manufacture precision handmade Moving Coil (MC) Phono Cartridge masterpieces. All van den Hul cartridges are hand built and tuned by Dutch Master cartridge designer A.J. van den Hul and his son William van den Hul. They also manufacture Cables, Phono Preamps, a Mono-Block Power Amp and Preamplifiers.  
  • Vinnie Rossi Audio - Manufacturer of high-end audiophile Solid State electronics. The comapny was founded in 2004, and is headquartered in Holden, MA.  They manufacture a Preamp, a Power Amp and an Integrated Amp.