Who are the high-end audio equipment manufacturers that still produce vacuum tube amplifiers?

Yes. There is still a surprisingly strong ultra-high-end vacuum-tube amplifier market, although the manufacturers tend to be specialists rather than mainstream electronics companies.

Here are the names I would put on the serious audiophile shortlist as of 2026:

The reference-level specialists

• Audio Research — Probably the quintessential American high-end tube brand. Its current lineup includes the Reference 330M, Reference 160M MkII, Reference 160S, Reference 80S, VT80SE and I/70 tube integrated. The 330M is a 330-watt all-tube monoblock with an all-tube signal path.
• VAC — One of the most tube-centric companies in the business. VAC says it uses vacuum-tube technology "almost exclusively," and its current range includes the cost-no-object Statement 455 iQ, Statement 452 iQ, Master 300 iQ and Signature 202 iQ.
• Conrad-Johnson — A legendary American tube house that is very much still active. Its current range includes the $52,000/pair ART108A tube amplifier and $22,000 ART27A, along with the ART150, ART300 and Classic series.
• VTL — Another major American tube specialist, particularly interesting if you want very high power from tubes. VTL has historically produced enormous-output monoblocks, including its famous 500-watt tube designs.
• Octave — One of the most technologically sophisticated modern tube companies. Rather than simply recreating classic tube circuits, Octave combines tubes with sophisticated semiconductor control circuitry. Its current flagship Jubilee Mono Ultimate uses eight KT170 tubes for 440 W per channel.

Other major high-end tube manufacturers

• McIntosh Laboratory — McIntosh continues to make serious tube equipment alongside its solid-state products. The MC3500 MkII and other current designs carry on the company's tube tradition; the MC901, for example, combines a 300-watt KT88 tube amplifier section with a 600-watt solid-state section.
• Western Electric — Particularly important if you're interested in 300B single-ended or low-power tube amplification. Its current 91E is a premium 300B integrated/power amplifier, and Western Electric manufactures its own 300B tubes in the USA.
• Manley Laboratories — A particularly interesting crossover between studio/professional and audiophile equipment. Manley continues to build tube power amplifiers, preamps, phono stages and headphone amplifiers; its designs include 300B and other tube technologies.
• Audio Note UK — One of the most tube-committed companies in the world, particularly famous for single-ended-triode (SET) amplifiers, 300B, 211 and 845 designs. It's a natural choice for highly efficient speakers.
• JADIS — Long-established French specialist known for beautifully built tube amplifiers and some extremely ambitious monoblocks.
• Allnic Audio — Particularly notable for sophisticated transformer and tube designs, with both preamplifiers and power amplifiers.
• Line Magnetic — Excellent choice if you're interested in vintage Western Electric/Western Electric-inspired circuitry, 300B/845/211 amplifiers and high-efficiency loudspeakers.
• Air Tight — A cult-level Japanese manufacturer specializing in beautifully engineered tube electronics.
• Leben HiFi — Smaller-scale Japanese manufacturer with a strong following for its tube integrated amplifiers and headphone equipment.
• Shindo Laboratory — Extremely boutique and expensive, with an almost artisanal approach to tube amplification. Particularly interesting for enthusiasts pursuing vintage-inspired SET systems.

If you're looking for the very best

I'd divide the field roughly like this:

One important distinction: "tube amplifier" doesn't necessarily mean a warm, low-powered amplifier anymore. The current top end includes designs such as Octave's 440 W KT170 monoblocks, VAC's massive Musicblocs, Audio Research's 330 W monoblocks, and VTL's high-powered designs.

If you're choosing one for an actual system, the loudspeaker you're driving matters enormously. A 98–105 dB efficient horn speaker opens up an entirely different universe of 8–30 W 300B/845/2A3 amplifiers, whereas a difficult 82–87 dB modern speaker can make a 200–400 W KT88/KT120/KT150/KT170 amplifier much more appropriate.

Despite the dominance of solid-state and digital amplification, the high-end audiophile market features a robust, dedicated group of manufacturers that continue to engineer and hand-craft state-of-the-art vacuum tube amplifiers.

The premier high-end audio manufacturers still actively producing vacuum tube amplifiers include:

• Audio Research: A legendary American high-end institution based in Minnesota, renowned for its reference-grade tube preamplifiers and massive power amplifiers (such as the Reference and I/70 series) that define high fidelity.
• McIntosh Laboratory: Famous for its iconic blue output meters and polished chassis , McIntosh continues to build legendary pure-tube and hybrid amplifiers like the timeless MC275 and the high-power MC1502.
• PrimaLuna: Based in the Netherlands and widely praised for build quality, PrimaLuna specializes in heavy-duty point-to-point wired tube integrated amplifiers and power amps featuring sophisticated adaptive auto-bias circuitry.
• Conrad-Johnson: Another foundational American name in tube audio , celebrated for its rich, liquid midrange reproduction and ultra-premium line-stage preamplifiers and power amplifiers.
• VTL (Vacuum Tube Logic): Founded by the Manley family, VTL creates robust, high-power vacuum tube monoblocks and integrated amplifiers designed to tackle difficult loudspeaker loads with authoritative bass and sparkling transparency.
• Manley Laboratories: Operating out of their historic facility in Chino, California, Manley builds distinctive pro-fi and audiophile tube electronics, ranging from the accessible Mahi monoblocks to heavy-duty reference line stages.
• Octave Audio: A German family-owned specialist known for meticulous engineering, electronic protection systems, and sophisticated Class-A tube push-pull designs like the Jubilee series.
• Cayin: A prominent high-end manufacturer offering everything from accessible integrated tube units to exquisite, heavy-chassis single-ended pure Class-A masterworks utilizing tubes like the 300B and 845.
• Unison Research: An Italian artisan brand that blends striking woodworking and aesthetic design with pure Class-A ultra-linear tube topologies , such as the acclaimed S6 Black Edition.
• Leben Hi-Fi / Luxman: Japanese masters of tube architecture —Leben builds point-to-point classic valve gear by hand, while Luxman maintains an uninterrupted legacy of high-end tube and hybrid component manufacturing stretching across nearly a century.

If you're exploring these options, let me know:

• Are you looking for an integrated amplifier or separate preamp/power amp components?
• What type of speakers (sensitivity/impedance) will the amplifier need to drive?
• Do you have a preferred tube type or power output level in mind?

The high-end audio market features a thriving sector of dedicated manufacturers that continue to engineer, handcraft, and refine pure vacuum tube and advanced hybrid amplifiers.

Prominent high-end audio manufacturers still actively producing reference-grade vacuum tube amplifiers include:

• Audio Research Corporation : Based in Minnesota, this legendary name has championed high-definition tube amplification for over 50 years. They produce iconic preamplifiers and reference monoblock/stereo power amplifiers (such as the Reference and I/50 series) known for transparency and massive soundstages.
• McIntosh Laboratory : Famous for their signature blue output meters and massive chrome/glass chassis, McIntosh still builds iconic all-tube powerhouses like the legendary MC275 and the heavy-hitting MC3500 Mk II.
• VAC (Valve Audio Components) : Masterminded by Kevin Hayes, VAC builds ultra-high-end, meticulously engineered tube electronics (like the Statement series) featuring proprietary designs and zero-compromise heirloom build quality.
• PrimaLuna : Famed for offering exceptional build quality and reliability via point-to-point wiring and adaptive auto-bias circuits, their Evo series (ranging from integrated amps to massive power monoblocks) delivers incredible dynamics without traditional tube colorations.
• Audio Note (UK) : A purist high-end manufacturer specializing in single-ended triode (SET) architecture and heavily investing in handmade, bespoke silver-wired components and custom output transformers.
• Octave Audio : A German specialist renowned for push-pull pentode and class-A tube amplifiers featuring sophisticated electronic protection and power management systems.
• VTL (Vacuum Tube Logic) : Celebrated for heavy-duty, high-power tube monoblocks and line-stage preamps that combine the musical bloom of tubes with the lower-register grip normally reserved for solid-state gear.
• Balanced Audio Technology (BAT) : Known for distinctive fully balanced, high-current tube circuit topologies found in their renowned line of VK-series line stages and multi-tube power amplifiers.
• Linear Tube Audio (LTA) : Operating out of Maryland, LTA utilizes patented ZOTL (David Berning's Zero Hysteresis Output Transformerless) technology to design modern tube amplifiers that eliminate traditional transformer limitations for unmatched neutrality.
• Unison Research : An Italian manufacturer crafting gorgeous wood-and-metal-accented single-ended and parallel Class-A tube amplifiers, such as the flagship Absolute 845.
• Manley Laboratories : Based in California, they bring pro-studio pedigree and high-end consumer hi-fi styling together in stellar tube preamplifiers and power amplifiers.

Are you looking for a specific type of tube topology (like Single-Ended Triode vs. Push-Pull), or do you have a particular budget and speaker sensitivity in mind that we should optimize recommendations for?

Yes. The high-end tube-amplifier market is actually quite healthy, although it is much smaller than the solid-state market. If by “high-end” you mean serious audiophile manufacturers rather than mass-market or inexpensive tube gear, these are the names I'd put on the short list as of 2026:

The manufacturers I'd consider the real top tier

If you're asking because you're considering buying a serious system, I'd narrow that considerably.

VAC is one of the first names I'd investigate. Their Statement series is genuinely no-compromise territory; for example, the Statement 450S iQ is a 225 W/channel tube amplifier with VAC's automatic bias system.

VTL is another standout, particularly if you want lots of tube power rather than the typical 8–30 W SET amplifier. VTL currently makes everything from the IT-85 integrated to the S-400 II and enormous Siegfried II and Lohengrin monoblocks. The company explicitly says its amplifiers are pure-tube circuits.

Jadis remains one of the quintessential European tube manufacturers. Its current range includes numerous integrated and power amplifiers, including 300B, 845 and KT-series designs. Jadis has been manufacturing tube electronics in France since 1983.

Octave is particularly interesting if you want the benefits of tubes without accepting all of the traditional compromises. Its current range includes the V 70/V 80/V 110, Jubilee 300B and new Jubilee Class A amplifiers. Octave deliberately combines tube technology with modern semiconductor circuitry where it believes that improves stability and performance.

Western Electric is the specialist I'd look at if you're specifically interested in 300B. Its 91E is a modern 20 W/channel 300B SET integrated amplifier, and the company manufactures its own 300B tubes in the USA. It also now lists 97A monoblock amplifiers.

Line Magnetic is perhaps one of the most interesting choices for someone who wants the classic Western Electric/Altec aesthetic but wants modern production. Its current lineup includes 300B, 805, 845, 211, EL34 and KT-series amplifiers, including some very expensive statement models.

Manley is also worth serious consideration. It continues to build tube hi-fi equipment in California, including the Stingray II, Neo-Classic 300B, Mahi, Snapper and 250/500 W monoblocks.

And don't overlook McIntosh

McIntosh is unusual because it's simultaneously a major established high-end manufacturer and one of the few companies still producing substantial quantities of tube equipment.

Its current lineup includes the MA2375, a 75 W/channel all-tube integrated amplifier, and the MC3500 Mk II tube power amplifier. The MA2375 is particularly notable because McIntosh describes it as its first new vacuum-tube integrated amplifier in more than a decade.

One important distinction

There are really three different tube-audio worlds:

1. High-power modern tube amplification
VAC, VTL, Audio Research, McIntosh, Octave, Jadis, Nagra
→ Best if you have relatively difficult speakers and want tube character without giving up bass control, dynamics and power.

2. SET/triode purist amplification
Western Electric, Audio Note, Line Magnetic, Air Tight, Allnic, Shindo, Kondo
→ Often 8–30 W, sometimes considerably more. Extraordinary with appropriately sensitive speakers.

3. Tube/hybrid high-end designs
Aesthetix, Octave, some Nagra and Audio Research designs
→ Tubes are used where the designer thinks they offer the greatest sonic benefit, while solid-state circuitry may handle current delivery, regulation or other functions.

If you tell me your speakers (or the speakers you're considering), your budget, and whether you want SET/300B versus high-power push-pull, I can narrow this to perhaps 5–8 manufacturers/models that would make the most sense, including the truly exotic $20k–$100k+ options.

Vacuum tube amplification is alive and well in the high-end audiophile market. Rather than being obsolete, tubes are treated as a fine art, with several legendary legacy brands and boutique manufacturers continuing to craft reference-grade valve gear.

Prominent high-end audio manufacturers still actively producing vacuum tube amplifiers include:

• Audio Research Corporation : Based in Minnesota, Audio Research is one of the most historically significant names in high-end audio. They famously championed the return of the vacuum tube in high-fidelity separate and integrated components (like the modern I/50 or reference series).
• McIntosh Laboratory : Known worldwide for their iconic blue watt meters and polished chassis, this legendary American brand still manufactures celebrated tube power and integrated amplifiers, including the classic MC275 and newer iterations like the MC3500 Mk II.
• Vacuum Tube Logic (VTL) : Founded in California/Nevada, VTL specializes in heavy-duty, high-power vacuum tube amplification. Their massive monoblocks and line preamplifiers are renowned for combining the musicality of tubes with exceptional modern speaker-driving control.
• PrimaLuna : Based in the Netherlands/U.S., PrimaLuna has earned a stellar reputation for building ultra-reliable, point-to-point wired tube integrated amplifiers and power amps (such as the EVO series) featuring adaptive auto-bias technology.
• Conrad-Johnson : Another American high-end cornerstone, c-j is revered by audiophiles for producing lush, highly transparent tube preamplifiers and power amplifiers that prioritize pure harmonic accuracy over flashy aesthetics.
• Octave Audio : A German high-end manufacturer specializing exclusively in state-of-the-art tube amplification. Octave is praised for electronic protection systems and sophisticated power supply engineering integrated into classic push-pull and single-ended designs.
• Cary Audio : Based in North Carolina, Cary is famous for making everything from cost-no-object 845/300B single-ended triode (SET) monoblocks to high-performance tube digital-to-analog hybrids and preamps.
• Balanced Audio Technology (BAT) : Operating out of Delaware, BAT crafts high-end balanced vacuum tube line stages, preamplifiers, and multi-tube power amplifiers designed for total circuit symmetry and low distortion.
• Audio Note (UK) : Renowned for purist, no-feedback single-ended triode designs and extreme attention to component quality (often winding their own copper and silver output transformers), Audio Note caters to ultra-high-end analog traditionalists.
• Luxman : While legendary for solid-state gear as well, this storied Japanese luxury audio company maintains a dedicated line of gorgeous, heritage-inspired vacuum tube stereo amplifiers and preamplifiers (such as the MQ-88uC).

If you are looking to buy or build a system , tell me:

• What speakers you plan to drive (efficiency/impedance)
• Your preferred budget range

I can help narrow down which specific tube topology or brand would match your setup best.

Yes. There is still a surprisingly healthy high-end tube-amplifier market, although it is much smaller than the solid-state high-end sector. The most notable manufacturers producing tube amplifiers today include:

A few deserve particular attention.

Audio Research

If you're looking for the most established modern high-end tube manufacturer, Audio Research is probably the first name I'd investigate. It was founded by Bill Johnson in 1970 and essentially helped establish the modern high-end tube-audio movement. The company still manufactures amplifiers in Minnesota and currently offers products such as the Reference 160M MkII, with four KT150 output tubes, and the Reference 330M monoblock.

VAC

Valve Amplification Company (VAC) is arguably one of the most important names if you're talking about extreme high-end tube amplification. VAC says it uses vacuum-tube technology "almost exclusively," and its range extends from integrated amplifiers to enormous Statement-series components.

Interestingly, VAC lists The Audio Company in Marietta, Georgia, as a VAC Select Specialist, so there is a particularly good dealer option in your region.

Western Electric

Western Electric is the fascinating one. It isn't merely a company that uses tubes—it actually manufactures tubes, including new-production 300Bs, in the United States. It also makes extremely expensive tube amplifiers. Its current 91E is a 300B-based integrated amplifier aimed squarely at the super-high-end market.

McIntosh

McIntosh is still very much in the tube business. In fact, in 2026 it introduced the MA2375, a new 75-watt/channel vacuum-tube integrated amplifier using KT88 output tubes.

That's significant because McIntosh combines tube amplification with unusually high power and modern conveniences, rather than pursuing the ultra-low-power SET philosophy.

If you want the really high-end names

I'd narrow the field to roughly these depending on the sound you're after:

• Best all-around/reference: Audio Research
• Ultra-high-end/high-power: VAC
• Classic American tube sound + power: McIntosh
• 300B/SET purist: Western Electric or Audio Note
• Warm, romantic, musical: Conrad-Johnson
• High-power tubes: VTL
• Japanese craftsmanship: Air Tight, Leben, Shindo
• Studio/high-end hybrid sensibility: Manley

One important distinction: "tube amplifier" doesn't necessarily mean warm-sounding. A modern Audio Research or VAC amplifier can be remarkably neutral and extended, whereas a 300B single-ended amplifier from Western Electric or Audio Note is pursuing a very different set of design priorities.

If you're considering buying one, I can also give you a shortlist of the 10 best current tube amplifiers from roughly $5,000 to $100,000+, including power output, tube type, price, and sonic character.

Several prominent high-end audio manufacturers continue to design, hand-build, and innovate with vacuum tube technology. These brands cater to audiophiles seeking the warmth, harmonic richness, and holographic soundstage characteristic of tube amplification.

• Audio Research Corporation : A legendary name in high-end audio, Audio Research has specialized in high-definition vacuum-tube preamplifiers, power amps, and integrated amplifiers (such as the I/50) for decades.
• McIntosh Laboratory : Famous for its iconic blue watt meters and polished chassis, McIntosh famously maintains a strong lineup of pure vacuum tube and hybrid amplifiers, including legendary designs like the MC275 and MC3500 Mk II.
• PrimaLuna : Known for exceptional reliability and point-to-point wiring, PrimaLuna produces acclaimed integrated and power amplifiers (like the EVO series) featuring adaptive auto-bias technology.
• Cayin : Celebrated for heavy-duty hand-made construction and pure Class-A single-ended setups (such as the CS-845A), Cayin blends traditional tube warmth with modern high-end component quality.
• Octave Audio : A German high-end specialist renowned for ultra-refined push-pull and Class-A monoblock tube amplifiers featuring sophisticated electronic protection and power management systems.
• Unison Research : An Italian manufacturer recognized for elegant wood-accented chassis and magnificent single-ended parallel Class-A tube amplifiers like the reference Absolute 845.
• Linear Tube Audio (LTA): Utilizes patented ZOTL (Zero Hysteresis Output Transformerless) technology licensed from David Berning to deliver tube magic with extended, accurate bass and modern transparency.
• VTL (Vacuum Tube Logic) : An American luxury audio brand famous for massive, high-power reference monoblocks (like the Siegfried series) equipped with microprocessor-controlled diagnostics.
• Leben Hi-Fi Stereo Company : A boutique Japanese manufacturer building exquisitely styled, vintage-inspired tube integrated amplifiers utilizing point-to-point wiring.
• Air Tight : Another revered Japanese artisanal brand (such as the ATM-1) focusing on traditional analog craftsmanship, custom transformers, and rich, holographic presentation.

Are you looking for a specific type of tube amp (such as Single-Ended Triode (SET) vs. Push-Pull ), or a particular budget range and speaker match ? I can help narrow down the ideal manufacturer for your setup.

Yes. There is still a surprisingly healthy high-end vacuum-tube amplifier market, although it is much smaller than the solid-state market. The serious manufacturers fall roughly into three groups: ultra-high-end specialists, established high-end companies with tube lines, and premium tube-focused brands.

The major names I would look at

A few are particularly noteworthy if you're talking about genuinely state-of-the-art high end, rather than simply "an amplifier that happens to use tubes."

The reference-level manufacturers

Audio Research is one of the foundational American high-end tube companies. It continues to manufacture tube equipment, including very serious power amplifiers, and still builds products in Minnesota.

VTL is particularly interesting if you want power. Its current range includes everything from the IT-85 integrated to the enormous Siegfried II and Lohengrin reference monoblocks. VTL says its products are hand-built in California, and its amplifiers remain pure-tube designs.

VAC is another top-tier American specialist. Its range includes tube preamps, power amplifiers and integrated amplifiers, with the Statement series occupying the exotic end of the market.

Audio Note UK is one of the most important names if you're interested in single-ended triodes (SET), high-efficiency loudspeakers and relatively direct signal paths. Their philosophy is quite different from VTL or Audio Research.

Octave is almost the opposite philosophy from vintage tube minimalism: highly engineered tube electronics with sophisticated power supplies, protection and control systems.

Jadis represents the classic French approach—beautiful construction, transformers, tube circuits and very substantial physical products.

And at the truly extravagant end, Engström and Ypsilon are worth knowing. These are more in the realm of "reference system component costing as much as a car" than mainstream hi-fi.

Don't overlook McIntosh

McIntosh Laboratory still makes tube equipment alongside its much larger solid-state range. Its current catalog includes the MA2375 2-channel vacuum-tube integrated amplifier.

McIntosh is somewhat unusual because it combines massive engineering resources, a long-established brand, and genuine high-end tube designs rather than being exclusively a tube specialist.

A useful distinction

If you're considering buying one, I'd divide these manufacturers by design philosophy rather than price:

• Warm/romantic/organic: Conrad-Johnson, Cary, Leben, Air Tight
• Neutral/precise/modern: Audio Research, Octave, VTL
• SET/triode purity: Audio Note, Mastersound, Allnic
• Huge power + tubes: VTL, VAC, Audio Research, McIntosh
• Ultra-exotic: VAC, Engström, Ypsilon, top Audio Note, top Jadis
• Best value into high-end tube territory: PrimaLuna, Cary, some Audio Research models

PrimaLuna is worth separating from the others: it is not really in the same price stratosphere as Engström or Ypsilon, but it has a strong reputation for making tube ownership unusually easy and reliable. Its current line includes integrated, preamplifier and power-amplifier models and emphasizes point-to-point wiring.

If you're asking because you're shopping for a tube amplifier, I can also narrow this down to the 10 best current tube amplifier manufacturers, with specific models and prices, or compare Audio Research vs VAC vs VTL vs McIntosh vs Audio Note—which is a much more interesting comparison.

A thriving group of elite, high-end audio manufacturers continues to engineer, hand-build, and innovate with vacuum tube technology. Rather than being relics of the past, tube amplifiers occupy a revered, ultra-luxury tier in contemporary audiophile setups.

Prominent high-end manufacturers actively producing top-tier vacuum tube amplifiers include:

• Audio Research Corporation (ARC) : A legendary name in high-definition audio. They have championed vacuum tube and hybrid designs since the 1970s, producing iconic reference preamplifiers and power amps alongside modern integrated units like the Audio Research I/50.
• McIntosh Laboratory : Famed for their timeless black-glass faceplates and glowing blue wattmeters, McIntosh never truly abandoned tubes. They continue to manufacture classic all-tube components and modern legends like the legendary McIntosh MC275 stereo amplifier and massive tube monoblocks.
• VAC (Valve Amplification Company) : Masterminded by Kevin Hayes, this American high-end brand builds breathtakingly robust, fully balanced all-tube power and integrated amplifiers (such as the Statement and Signature series) prized for their immense authority and refinement.
• Luxman : This historic Japanese audio icon stood apart when the industry rushed into solid-state during the 1960s. They have produced vacuum tube electronics without interruption, blending gorgeous retro-industrial and wood-case aesthetics with cutting-edge attenuator tech like the Luxman LX-380.
• Audio Note (UK) : Renowned for their uncompromising pursuit of pure Single-Ended Triode (SET) topologies and zero negative feedback designs. Their statement pieces, like the Meishu Tonmeister series, cost tens of thousands of dollars and use heavily customized, in-house-wound transformers and silver wiring.
• Octave Audio : Based in Germany and directed by Andreas Hofmann, Octave specializes in highly sophisticated push-pull and Class-A tube amplifiers. They are famous for exceptional reliability, intelligent electronic protection circuits, and pristine power delivery.
• PrimaLuna : A Dutch-engineered brand widely praised for bringing heavy-duty, point-to-point wired, auto-biasing vacuum tube integrated and power amplifiers to the high-end market with rare user-friendly reliability.
• Jadis : A French luxury manufacturer instantly recognizable by its polished stainless-steel and 24-karat gold-plated chassis. Jadis is celebrated globally for producing some of the most harmonically rich, opulent-sounding tube amps in existence.
• Conrad-Johnson : Another cornerstone of American high-end tube audio based out of Virginia, celebrated for creating ultra-transparent, musically organic line stages and power amplifiers that defined "state-of-the-art" sound for decades.
• Pathos Acoustics : An Italian boutique manufacturer famous for avant-garde aesthetics and innovative hybrid designs (tube preamplification married to solid-state output stages) as well as pure tube topologies.
• Woo Audio : Based in New York, they are a premier name specializing heavily in high-end personal audio and head-fi, crafting reference-class headphone and desktop tube amplifiers like the Woo Audio WA5 that can also drive high-efficiency loudspeakers.

Are you looking for a specific type of tube amplifier (such as a single-ended triode (SET) vs. push-pull ), or trying to match one with a particular set of loudspeakers?

Despite the growth of Class D and advanced solid-state amplifiers, a surprising number of prestigious high-end manufacturers continue to build vacuum tube amplifiers. Some focus exclusively on tubes, while others maintain tube product lines alongside transistor designs.

Here are many of the best-known names:

European manufacturers

• Octave Audio (Germany)
• Ayon Audio (Austria)
• Unison Research (Italy)
• Pathos Acoustics (Italy) — hybrid tube/solid-state
• NAT Audio (Serbia) — very high-power SET and push-pull designs
• Fezz Audio (Poland)
• Audio Note (UK) (United Kingdom)

Japanese manufacturers

• Luxman
• Air Tight
• Kondo Audio Note
• Triode Corporation
• Yamamoto Sound Craft
• Shindo Laboratory

Chinese manufacturers that have gained international recognition

• Line Magnetic
• Cayin
• Willsenton
• Opera Consonance

Ultra-luxury boutique makers

These companies build amplifiers that often cost from $30,000 to well over $200,000:

• Kondo Audio Note
• Audio Note (UK)
• VAC (Valve Amplification Company)
• VTL
• NAT Audio
• Air Tight

Companies known specifically for single-ended triode (SET) amplifiers

If you're interested in the classic 300B or 2A3 sound, these manufacturers are particularly well regarded:

• Audio Note (UK)
• Kondo
• Air Tight
• Cary Audio
• Line Magnetic
• Fezz Audio
• NAT Audio
• Yamamoto Sound Craft

Current industry outlook

Tube amplifiers remain a healthy niche in high-end audio, although manufacturers have had to adapt to a smaller and less predictable supply of new vacuum tubes. Most modern audio tubes now come from a handful of factories, particularly in Slovakia, Russia, and China, which has influenced product design and pricing across the industry.

If you're looking for manufacturers with the strongest reputations for long-term reliability and resale value, many audiophiles would place Audio Research, VAC, VTL, Atma-Sphere, Conrad-Johnson, McIntosh, Luxman, Audio Note (UK), Air Tight, and Line Magnetic among the leading choices.