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Tube (Valve) Hi-Fi
A tube amplifier raises the signal with vacuum valves instead of transistors, so its output transformer makes loudspeaker choice part of the design. That pairing logic keeps valve gear a separate branch of Hi-Fi, from small single-ended integrateds to 250 W monoblocks.
John Makovsky
Audio
ELAC Tube 100 – A Tube Amplifier Celebrating the Company’s Centennial
ELAC has introduced the Tube 100 integrated tube amplifier, created to mark the German brand’s 100th anniversary. The model combines traditional tube amplification with modern connectivity options, including HDMI ARC and Bluetooth. According to the manufacturer, the Tube 100 could be one of the first fully tube-based integrated amplifiers to feature HDMI support.
John Makovsky
Audio
Layer GEN-300B – Single-Ended Class A Tube Amplifier
Layer Audio Design has introduced the GEN-300B integrated amplifier, built around a single-ended Class A tube topology and designed for use with both headphones and high-sensitivity loudspeakers. Its fully discrete signal path employs two 6N8P driver tubes, a pair of directly heated 300B output triodes, and a 5AR4 rectifier tube. The rated output power is up to 10 watts per channel into an 8-ohm load, while separate 4- and 8-ohm speaker outputs are provided.
John Makovsky
Audio
iFi Audio iCan Phantom 1.5 – Headphone Amplifier with Support for Electrostatic Models
British audio manufacturer iFi Audio has introduced the iCan Phantom 1.5, an enhanced version of its flagship headphone amplifier. While the new model retains the overall design and concept of the original Phantom, it features a revised gain structure, improved compatibility with sensitive in-ear monitors, a new display, and expanded remote-control options via the Nexis app.
John Makovsky
Audio
Cayin HA-1A Mk3 – Compact Tube Headphone Amplifier
Cayin has introduced the HA-1A Mk3 tube headphone amplifier, the third generation of one of the company’s most compact models. The new amplifier operates in Class A, uses an all-tube circuit design, and is intended primarily for desktop audio systems. Its construction incorporates specially designed transformers, while the HA-1A Mk3 itself is the smallest model in Cayin’s HA series.
John Makovsky
Audio
Feliks Audio Eos – 300B Tube Amplifier for Headphones and Speakers
Polish manufacturer Feliks Audio has revealed new details about its flagship Eos amplifier, a prototype of which was shown at High End Vienna 2026. The new model sits above the Envy series and is designed not only for dynamic and planar magnetic headphones, but also for driving loudspeakers. Electrostatic headphones, meanwhile, remain the domain of the dedicated Bliss amplifier.
John Makovsky
Audio
Margules U-280 SC 30th Anniversary – Celebrating the Anniversary
Mexican company Margules has released a special edition of its U-280 SC tube power amplifier to celebrate the model’s 30th anniversary. The amplifier retains the key technical solutions of the original design, which the manufacturer has continued to refine over the past three decades, including pure Class A operation, selectable output-stage modes, and a proprietary automatic tube bias adjustment system.
John Makovsky
Audio
Cayin Jazz 70 – the Entry-level Amplifier in the Jazz Series
Cayin has released the Jazz 70 integrated tube amplifier, the smallest and most affordable model in the Jazz family, which also includes the Jazz 80, Jazz 90 and Jazz 100. The amplifier combines traditional tube circuitry with modern connectivity: three RCA inputs are provided for analog sources, while wireless playback is available via Bluetooth.
John Makovsky
Audio
Pilot Radio Revives the 232 Tube Amplifier Based on a 1959 Design
The revived American brand Pilot Radio unveiled the Pilot Radio 232 stereo tube power amplifier at the Southwest Audio Fest in Dallas. Priced at $4,790, the model is inspired by the company’s proprietary Curtain of Sound circuit, originally developed in 1959. The modern version was designed by Damon Coffman of Coffman Labs, while production has been established at facilities in Portland and Dallas.
John Makovsky
Audio
McIntosh MA2375 – a Tube Integrated Amplifier from a Legend of American Audio
American company McIntosh has expanded its catalogue with the new MA2375 integrated tube amplifier. The model combines the brand’s traditional approach to tube amplification with a modern set of connection options and delivers 75 watts per channel, while remaining relatively compact for a device of this class.
John Makovsky
Audio
Air Tight ATC-6 – a Tube Preamplifier that Replaces the ATC-3 after Two Decades
Japanese brand Air Tight has updated its current product lineup with the new ATC-6 tube preamplifier. The model succeeds the ATC-3 roughly twenty years after the latter’s release and is positioned as the most accessible preamplifier in the company’s catalogue.
John Makovsky
Audio
Rogue Audio M250 Ultra – Flagship Tube Monoblock Rated at 250 Watts
American company Rogue Audio has announced its flagship monophonic power amplifier, the M250 Ultra. The new model is aimed at listeners who expect tube amplification to deliver not only its characteristic fluidity and expressiveness, but also a truly impressive reserve of power. According to the manufacturer, the monoblock is capable of delivering up to 250 watts while combining substantial dynamic authority with precise reproduction of subtle musical detail.
John Makovsky
Audio
Ampsandsound Unveiled Three New Tube Models
At AXPONA 2026 in Chicago, California-based company Ampsandsound introduced three new components at once: the updated Kenzie Reimagined headphone amplifier, the Badlands preamplifier, and the Stereo 17 stereo power amplifier. All three new models continue the brand’s commitment to hand-built construction, classic tube-based design, and highly expressive, musical sound.
John Makovsky
Audio
Cayin HA-300 MK3 – a Flagship Headphone Amplifier on 300B Tubes
Cayin has updated its flagship HA-300 headphone amplifier, introducing the third-generation version – the Cayin HA-300 MK3. The new model retains the core features of the design: single-ended Class A circuitry, 300B tubes in the output stage and an external power supply.
John Makovsky
Audio
Jadis Aria – a New Entry-Level Tube Integrated Amplifier
French company Jadis Electronics has expanded its lineup with the new Aria integrated tube amplifier, which replaces the Orchestra and now takes the position of the entry-level model in the brand’s catalog. That said, it should not be seen as a budget solution: this is still a full-fledged High End component, built in keeping with Jadis traditions.
John Makovsky
Audio
Jadis Óde – Hand-built Tube Amplifier
The French company Jadis Electronics has announced a replacement in its lineup for the popular integrated amplifier I35. Its place will be taken by the Jadis Óde model. The output stages of the new amplifier operate in pure Class A and are built around KT88 beam tetrodes, hand-selected by Jadis. The amplifier can also use KT120 tubes.
John Makovsky
Audio
Audio Research I/55 – Tube Integrated Amplifier with DAC and Phono Stage
The American tube audio manufacturer Audio Research has introduced the integrated amplifier Audio Research I/55, which combines proven engineering solutions with modern functionality. The new model borrows key design elements from the flagship Audio Research I/70 and adapts them to a more compact chassis. As a result, the Audio Research I/55 integrated amplifier is aimed at listeners who value the characteristic tube sound but do not want to compromise on flexible connectivity and ease of use. As the successor to the Audio Research I/50, the new model incorporates important technical improvements from the larger Audio Research I/70 and brings them into a format suitable for compact High End systems.
John Makovsky
Audio
Audio Note OTO SE 35 – Anniversary Edition of the Tube Integrated Amplifier
The British high-end audio manufacturer Audio Note (UK) has marked 35 years since the release of its Oto integrated amplifier by launching the Audio Note Oto SE 35th Anniversary Edition, which the company describes as the most significant modernization and improvement of the design in all those years. First introduced in 1991, the Audio Note Oto tube integrated amplifier holds a special place in the history of Audio Note (UK).
John Makovsky
Audio
Audio Research D-80 – Tube Two-Channel Power Amplifier
The well-known manufacturer of tube audio equipment, Audio Research, has introduced a new stereo power amplifier, the Audio Research D-80, in the Reference series, combining pentode operation, automatic bias adjustment and balanced signal transmission with an output power of 70 W per channel.
John Makovsky
Audio
Audio Research I/70 - The New Tube Amplifier
American tube-audio manufacturer Audio Research has introduced the new Audio Research I/70 integrated amplifier. Four 6550 tubes deliver 70 watts per channel, which the company believes is sufficient even for low-sensitivity loudspeakers. The Audio Research I/70 can be expanded by installing two optional modules: a DAC and a phono preamplifier.
What tube (valve) amplification is & why it matters
In a valve stage, a heated cathode emits electrons and a grid voltage controls their flow to the plate. Output tubes such as the 300B triode, EL34, KT88 or 6550 drive an output transformer that steps their high impedance down to a 4 or 8 ohm load. A single-ended 300B stage gives around 8 W, while push-pull circuits reach tens or hundreds of watts. Output impedance is higher than in a transistor amp, so speaker sensitivity and the impedance curve decide the result.
What you'll find in this tag
Launch news makes up most of the tag - integrated amps, power amps, preamplifiers and headphone amps from Cayin, Jadis, McIntosh, Air Tight, Margules and Rogue Audio. Guides compare tube and solid-state topologies, rank 300B single-ended designs and match high-sensitivity speakers to low-power valve amps. Tube-output sources appear too, such as the Taga Harmony TCD-70T CD player.
Key models & brands to know
Audio Research - the I/70 integrated runs four 6550 tubes for 70 W per channel. Cayin Jazz 70 - four EL34s give 17 W in triode or 35 W in ultralinear mode. Line Magnetic LM-300IA - a hand-built single-ended 300B integrated. Cary Audio CAD-300SEI - paired 300Bs for 2 x 15 W. Rogue Audio M250 Ultra - a monoblock with triode and ultralinear switching.
Related topics & where to go next
Read on in 300B Triode Tubes, Single-Ended Amplifiers, Hybrid Amplifiers and Speaker and Amplifier Matching. Horn Loudspeakers covers efficient partners, and the catalog's amplifier listings include current valve models.