Luxman MQ-88uC: What Owners and Reviewers Say About Its Sound and Features

Luxman Vacuum Tube Power Amplifiers

Luxman MQ-88uC: What Owners and Reviewers Say About Its Sound and Features

A 25 watt per channel triode wired KT88 power amplifier that took The Absolute Sound's Product of the Year award. Here is what the reviewers who lived with it, and the owners who weighed in online, actually say.

By All Elite Audio, authorized Luxman dealer · Published October 17, 2026

Luxman MQ-88uC vacuum tube power amplifier
The Luxman MQ-88uC with the tube cage removed, showing the four KT88 output tubes flanking the transformer housings. Product photo from All Elite Audio.

Our price

$6,995

At All Elite Audio, Timonium, Maryland

Amplifier type

Push pull triode

KT88 output tubes wired as triodes

Power output

25 W per channel

Into 4, 8, and 16 ohms

Signal to noise

105 dB

IHF-A weighted

Tube complement

8 tubes

ECC83S x2, ECC82 x2, KT88 x4, all JJ Electronic

Inputs

Variable and Direct

Front panel volume, or bypass it entirely

Weight

16.1 kg

35.5 lb net

Dimensions

440 x 184 x 230 mm

Width x height x depth

The short answer

The Luxman MQ-88uC is a 25 watt per channel push pull triode vacuum tube power amplifier built around four KT88 output tubes wired as triodes, with a Mullard style driver circuit and independent speaker terminals for 4, 8, and 16 ohm loads. The Absolute Sound gave it a Product of the Year award and called it "nothing short of a musical treasure," and Stereophile's Art Dudley called its limited edition sibling "one of the nicest sounding and most engaging amps I've ever heard, bar none." It is $6,995 at All Elite Audio in Timonium, Maryland. The honest caveats: 25 watts means speaker matching matters, Luxman does not recommend tube rolling, bias adjustments are meant for a qualified technician, and there are no balanced inputs or remote control.

What is the Luxman MQ-88uC?

The MQ-88uC is Luxman's modern take on its own 1969 MQ-60, a triode wired descendant of the classic Mullard 5-20 circuit. The lead engineer was Kazuyuki Doi, a 40 year Luxman veteran also responsible for the MQ-300 single ended triode amplifier, and the chassis is the work of industrial designer Kenji Hagiwara. It is a power amplifier, not an integrated: it expects a preamplifier, and Luxman built the CL-38uC vacuum tube control amplifier as its matching partner.

The unusual part is the output stage. The four KT88 beam tubes look like they belong in an ultralinear or beam power design, but each one is wired as a triode, with the screen grid tied to the plate through a current limiting resistor. The Absolute Sound put it bluntly: "A triode connected KT88 measures and acts like a triode, and most importantly, sounds like a triode." The tubes run conservatively, at 460 volts on the plate and 48 milliamps of idle current, about half the KT88's rated dissipation, which is why Luxman and reviewers both point to long tube life.

Around that core sit the parts Luxman winds and builds in house: redesigned OY15 type output transformers in die cast aluminum housings, an EI type power transformer with custom blocking capacitors, and Nichicon made metalized polypropylene film coupling capacitors chosen for what Luxman calls a supple, natural tone. Every unit gets a final performance check after a 48 hour aging process following assembly. The back panel carries two pairs of RCA inputs. One runs through the front panel volume control, so a CD player or DAC can drive the amp directly. The other, marked Direct, bypasses the input section entirely for use with a preamplifier.

Specifications

Type Vacuum tube stereo power amplifier, push pull triode output stage
Rated output 25 W + 25 W into 4, 8, and 16 ohms
Circuit Driver: Mullard. Output tubes: triode connection
Vacuum tubes ECC83S x2, ECC82 x2, KT88 x4, all by JJ Electronic
Input sensitivity 890 mV for 25 W
Input impedance 32 kΩ
Frequency response 20 Hz to 20 kHz (+0, -0.5 dB); 10 Hz to 100 kHz (+0, -3.0 dB)
Total harmonic distortion 0.1% (1 kHz, 1 W); 0.5% (20 Hz to 20 kHz, 1 W)
Signal to noise ratio 105 dB (IHF-A)
Speaker terminals Independent terminals for 4, 8, and 16 ohm speakers
Inputs Two RCA pairs: variable (front panel volume) and Direct (bypasses the input section)
Power consumption 170 W; 140 W with no signal
Dimensions 440 (W) x 184 (H) x 230 (D) mm
Weight 16.1 kg (35.5 lb)
Accessories Power cable
Finish Dark brown chassis, hairline finished aluminum top panel

What it sounds like, in owners' and reviewers' words

A straight word on sourcing first. The MQ-88uC has a thin footprint online. No dedicated owner threads for this model turned up on Reddit, Audio Science Review, or the Steve Hoffman Forums, and the only owner posts found anywhere sit in one AudioShark thread. What exists instead is an unusually strong press record, and it is consistent from review to review.

The highest praise comes from The Absolute Sound, which gave the MQ-88uC a Product of the Year award:

"The Luxman MQ-88uC is nothing short of a musical treasure. It represents a nearly perfect introduction to the joys of triode sound and is highly recommended for those in search of a closer approach to the real thing, and is a mandatory audition for all Quad-57 ESL owners."

The Absolute Sound, Product of the Year award

Stereophile's Art Dudley spent nearly two months with the MQ-88uSE, the 100 unit limited edition that the MQ-88uC directly replaced in the Luxman line, and wrote most of his listening notes before learning what was inside the chassis:

"One of the nicest sounding and most engaging amps I've ever heard, bar none."

Stereophile, Listening #189, Art Dudley (on the MQ-88uSE)

STEREO Magazine in Germany reviewed the MQ-88uC with its matching CL-38uC preamplifier:

"The longer we listened to Luxmans old looking but very fresh sounding duo, the more we loved it. They created a large, perfectly staggered horizon, played with punch and radiated brilliance as well as momentum in all pitches."

STEREO Magazine, Matthias Böde

The thread running through all three reviews is the same: this is triode sound with modern control, not nostalgia. The Absolute Sound's reviewer heard a triode that measures and acts like a triode, Dudley heard an amp that stayed musical at full orchestral scale, and STEREO heard punch and brilliance where a lesser tube amp would go soft.

Five things owners and reviewers praise

  1. 1 A musical treasure, and a Product of the Year

    The Absolute Sound's award citation is the single strongest statement any reviewer has made about this amplifier, and it names exactly who should hear it:

    "The Luxman MQ-88uC is nothing short of a musical treasure. It represents a nearly perfect introduction to the joys of triode sound and is highly recommended for those in search of a closer approach to the real thing."

    The Absolute Sound, Product of the Year award

  2. 2 One of the most engaging amps a veteran reviewer has ever heard

    Art Dudley lived with the MQ-88uSE for nearly two months and deliberately wrote his listening notes without knowing the circuit inside. His verdict, in his own words:

    "One of the nicest sounding and most engaging amps I've ever heard, bar none."

    Stereophile, Listening #189 (on the MQ-88uSE)

  3. 3 Tonally rich, musically tight, and faster than the reference

    Set against his reference amplifier, Dudley found the Luxman held its own and then some, with string tone that stopped him cold:

    "It was tonally rich and musically tight... I was knocked out by the lushly textured beauty of the string tone... the Luxman sounded faster and more incisive... What a great amp!"

    Stereophile, Listening #189 (on the MQ-88uSE)

  4. 4 A large, perfectly staggered soundstage with real punch

    STEREO Magazine heard the MQ-88uC with its matching preamplifier and kept coming back for more, describing scale and drive in equal measure:

    "They created a large, perfectly staggered horizon, played with punch and radiated brilliance as well as momentum in all pitches."

    STEREO Magazine, Matthias Böde

  5. 5 Dead quiet, with tubes run for the long haul

    The 105 dB signal to noise ratio is not a paper number. The Absolute Sound measured the bias after weeks of use and found it rock solid, and the tubes idle at about half their rated dissipation. Add the 48 hour aging and final performance check every unit gets after assembly, and the JJ Electronic tube complement Luxman chose for reliability and long life, and you get a tube amp built to be lived with, not fussed over.

The features, named by name

Owners and reviewers keep returning to the same hardware. These are the features they call out by name:

  • Triode connected KT88 output stage. Each KT88 has its screen grid tied to the plate through a current limiting resistor, so the beam tubes measure, act, and sound like triodes.
  • OY15 type output transformers in die cast aluminum housings, redesigned from Luxman's classic transformers with the original shape.
  • Independent 4, 8, and 16 ohm speaker terminals, so the amplifier can be matched to the speaker load instead of compromising on one tap.
  • Variable and Direct RCA inputs. The variable input runs through the front panel volume control for direct connection of a CD player or DAC. The Direct input bypasses the input section for use with a preamplifier.
  • Full JJ Electronic tube complement: ECC83S x2, ECC82 x2, KT88 x4, chosen by Luxman for reliability, long life, and sound.
  • Mullard driver circuitry, with a paralleled ECC83S input stage for lower noise feeding an ECC82 long tailed pair phase splitter.
  • EI type power transformer and custom blocking capacitors in the power supply section, for what Luxman calls steadfast sound quality and excellent drivability.
  • Nichicon made metalized polypropylene film coupling capacitors, introduced for their supple, natural tone.
  • Shortened internal wiring, a deliberate layout choice Luxman credits with improved audio quality.
  • 48 hour aging and final performance check for every unit after assembly.
  • Fixed bias with per tube test points and adjustment pots, set at the factory and intended for a qualified technician. The recommended range is 0.46V to 0.48V per test point.
  • Dark brown chassis with a hairline finished aluminum top panel and removable tube cage, styled by Kenji Hagiwara to echo Luxman's classic era.
  • Designed by Kazuyuki Doi and modeled on the 1969 MQ-60, Luxman's vintage triode wired take on the Mullard 5-20 circuit.

YouTube reviews

As of October 2026, no dedicated YouTube review of the MQ-88uC from an established review channel turned up in our research. Dealer walkthrough and demo videos exist, and they are worth a watch for a look at the amplifier in the flesh, but none of the familiar review channels has covered this specific model. If a real review appears, we will add it here in the same format used across this series.

Honest criticisms

The press reviews are glowing, but the amplifier has real world limits, and they are worth knowing before you listen.

Twenty five watts means the speakers have to be chosen with care

This is a 25 watt per channel amplifier, and it wants reasonably efficient speakers. One owner of the closely related MQ-88uSE found that speakers with impedance dips could expose the limit:

"There appeared to be impedance dips or something that just wasn't a good match between speaker and amp where certain upper mid frequencies could sound distorted and noisy."

Owner post, AudioShark (on the MQ-88uSE)

Luxman does not recommend tube rolling

Buyers who love swapping tubes should know this up front. As one owner put it after researching the amplifier:

"Most of the MQ-88uC's that come in for repair have had different tubes installed than what comes from the factory. No tube rolling recommended by Luxman."

Owner post, AudioShark

Bias adjustments are meant for a qualified technician

The test points and adjustment pots are on the chassis, but the owner's manual includes no biasing instructions. The Absolute Sound notes Luxman apparently did not intend these adjustments for anyone but a qualified technician, though seasoned owners comfortable with a multimeter can check the 0.46V to 0.48V range per tube. Budget for a dealer or tech if you want it checked.

No balanced inputs and no remote control

There are two single ended RCA input pairs and nothing else. Volume is a front panel knob, and there is no remote. If your system is built around balanced connections, plan accordingly.

One owner reported an intermittent variable input fault

A December 2019 buyer reported that the variable input "sometimes fails and there's zero sound from one of the channels," and that working the volume control up and down restores sound for a while. This is a single isolated report, not a pattern, but it is on the record.

The vintage look is a taste call

The dark brown chassis, tube cage, and retro styling are period correct rather than modern minimalist. Most reviewers loved it. If your rack is all black glass and touchscreens, see it in person first.

Frequently asked questions

How much does the Luxman MQ-88uC cost?

The Luxman MQ-88uC is $6,995 at All Elite Audio, an authorized Luxman dealer in Timonium, Maryland.

Is the Luxman MQ-88uC a true triode amplifier?

Yes. Each KT88 output tube is wired as a triode, with its screen grid connected to the plate through a current limiting resistor. The Absolute Sound confirmed the triode connected KT88 measures and acts like a triode, and sounds like one.

How much power does the Luxman MQ-88uC make?

The MQ-88uC is rated at 25 watts per channel into 4, 8, and 16 ohms, from a push pull triode output stage.

What tubes does the Luxman MQ-88uC use?

Eight tubes, all from JJ Electronic: two ECC83S, two ECC82, and four KT88. The ECC83S input stage is paralleled for lower noise, and the ECC82 works as a long tailed pair phase splitter.

Can I connect a CD player or DAC directly to the Luxman MQ-88uC with no preamp?

Yes. The variable RCA input runs through the front panel volume control, so a line level source can drive the amp directly. The Direct input bypasses the input section for use with a preamplifier.

Can I roll tubes in the Luxman MQ-88uC?

Luxman does not recommend it. Owner reports note that most MQ-88uC units arriving for repair had non factory tubes installed. The stock JJ Electronic complement was chosen for reliability, long life, and sound.

How is the bias set on the Luxman MQ-88uC?

The output stage uses fixed bias with test points and adjustment pots for each KT88, but the owner's manual includes no biasing instructions. Luxman intends bias checks for a qualified technician. The recommended range is 0.46V to 0.48V per test point.

Where can I hear the Luxman MQ-88uC?

At the All Elite Audio showroom in Timonium, Maryland. All Elite Audio is an authorized Luxman dealer. Call 443-402-5055 to set up a listen.

Hear the MQ-88uC at All Elite Audio

Luxman MQ-88uC: $6,995

All Elite Audio is an authorized Luxman dealer with a showroom in Timonium, Maryland, and multiple listening rooms. Walk ins are welcome during showroom hours, and trade ins are welcome toward the MQ-88uC. Shipping is free, and no sales tax is charged on shipments outside Maryland and Pennsylvania.

Call 443-402-5055 Visit alleliteaudio.com

Sources

Every quote, specification, and criticism in this post comes from the published sources below, read in full in October 2026.

Published by All Elite Audio, Timonium, Maryland. Prices and specifications are as published by the sources above and are subject to change. Owner quotes are reproduced from the public forum threads linked in the sources.

Back to blog