Note that this is a discontinued product. You may want to visit the brand's page here to browse their newer products.
What reviewers think
Bloggers and YouTubers have tried this product—so we've summarized their strongest opinions below. Links to full reviews follow.
Product Strengths
- Exemplifies Luxman's vacuum-tube heritage and design acumen with a classic retro look
- Designed as a push-pull triode amplifier, it delivers a naturally sweet, clear, and transparent tone, avoiding a bright sound
- Transients are reproduced with speed and finesse, and it is resolving of changes introduced by digital source components
- It excelled in depicting subtlety and purity of tone, making reproduction of female voices a joy to hear
- The combination with the CL-38uC created a large, perfectly staggered horizon, played with punch, and radiated brilliance as well as momentum in all pitches
Product Considerations
- Careful consideration is required when selecting a loudspeaker due to power output and impedance requirements, models with low efficiency or a difficult impedance curve should be ruled out
- Orchestral soundstage depth was somewhat compressed front-to-back compared to other amplifiers
- Bias adjustments should be performed by a qualified technician, as Luxman does not include biasing instructions in the owner's manual
Comparisons (according to reviewers)
- The Luxman MQ-88uC fits perfectly into the mold of naturally sweet, clear, and transparent tone delivery exemplified by the Radio Craftsman C500A
- The MQ-88uC/CL-38uC duo sounded clearer and even more vivid in the lower registers, developed a more expansive and 'real' three-dimensionality, and provided more brilliant trebles
- The MQ-88uC/CL-38uC tube double was more focused on charm and character and brought the music's emotional aspects closer to the listener, whereas the LX-509X always played very smoothly, neutrally and pleasantly, but gave less access to the music
Takeaway: The Luxman MQ-88uC offers a taste of triode sound, making it a worthwhile purchase for those seeking an authentic and emotionally engaging listening experience. It is especially good for listeners who appreciate detailed sound without artificial brightness.
All
MQ-88uC
reviews

Manufacturer details
- Rated output: 25W + 25W (4Ω, 8Ω, 16Ω)
- Input sensitivity: 890mV/25W
- Input impedance: 32kΩ
- Frequency response: 20Hz to 20kHz (+0, -0.5dB), 10Hz to 100kHz (+0, -3.0dB)
- Total harmonic distortion: 0.1% (1kHz/1W), 0.5% (20Hz to 20kHz/1W)
- S/N ratio (IHF-A): 105dB
- Circuit: Driver: Mullard, Output tubes: Triode connection
- Vacuum tubes: ECC83S×2, ECC82×2, KT88×4
- Power consumption: 170W, 140W (under no signal)
- External dimensions: 440(W) x 184(H) x 230(D) mm
- Net weight: 16.1kg (main unit)
Brand highlights
Taking a step back to look at reviewers' thoughts of the brand's entire lineup—not just this product—what stands out most is the following:
- Luxman's products consistently achieve a "musical and natural" sound, prioritizing listening enjoyment over strict adherence to sterile neutrality.
- They feature comprehensive tone and EQ controls that are still well-regarded and included in their current flagship components.
Select products
M-200
- Positioning: The entry-level model in Luxman's lineup, offering a compact stereo power amplifier.
- Description: Offers a compact design with a powerful output of 25 watts per channel, making it ideal for small spaces or desktop setups. Unlike higher-end models like the M-700u, it features a BTL monaural output mode for increased power, but lacks the advanced ODNF circuitry found in more expensive models, making it a budget-friendly option for those seeking quality sound without extensive features.
M-700u
- Positioning: A mid-range power amplifier that bridges the gap between entry-level and high-end models in Luxman's lineup.
- Description: Delivers a robust 120 watts per channel and incorporates the ODNF 4.0 circuit for improved distortion characteristics, offering a richer sound compared to the M-200. It provides a balance of power and sound quality, with more advanced features than the M-200.
M-900u
- Positioning: A high-end stereo power amplifier, positioned just below the flagship models in Luxman's lineup.
- Description: Features Luxman's advanced ODNF 4.0 circuit, providing ultra-low distortion and high power output of 150 watts per channel. It offers superior sound quality and build compared to the M-700u, with features like a large needle meter and a highly rigid chassis.
M-10X
- Positioning: Luxman's flagship stereo power amplifier, representing the pinnacle of their product lineup.
- Description: Introduces the new LIFES amplification feedback engine, delivering exceptional sound quality and power output of 150 watts per channel. It surpasses the M-900u with its advanced technology and exquisite design.
Our take on the brand
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Used
Luxman
What if you spend more?
The SE300B Mono Amplifier is... an all-tube power amplifier employing the famous classic 300B filamentary triode in single-ended operation mode for an output of up to 10 watts into a 4, 8 or 16 ohm loudspeaker load. The 300B power tube is excited by an extraordinary single-stage driver employing two CV2382/EL822 power pentodes operated in triode mode with high idle current and works into a C-core output transformer built in-house to the highest possible standards so as to ensure ultimate performance. The amplifier is built with meticulous hand construction using our proven point-to-point wiring techniques whereas much care has been taken in arranging each aspect of the internal construction to ensure low noise performance, ease of service and the highest reliability for many years to come.
Our summary
Product Strengths
- Pure sound, free of coloration while retaining musical detail, allows a graceful and effortless listening experience
- Natural and tangible sound due to accurate reproduction of details, creates a believable presentation
- Solid and controlled bass performance, unusual for a 300B single-ended triode amplifier
- Excellent sense of touch and tactile sound, making instruments like plucked strings and bowed violins sound very convincing
- Wide and deep soundstage with good 'air', providing a transparent and 'hear-through' sound, especially with complex music
Product Considerations
- Careful matching with partnering equipment is required, especially speakers with high efficiency
- Relatively low overall gain requires a source with a high output voltage
- Output transformer links need to be correctly set for speaker impedance, requiring dealer assistance
- Some reviewers found the top end sounding a bit rolled off before use of appropriate high efficiency speakers and source gain settings
- Changing the EL803S driver valves requires carefully matched pairs supplied by Thöress
Comparisons (according to reviewers)
- Vs Shindo Haut-Brion/Corton-Charlemagne, Thöress has more treble extension and transparency, Shindo has better upper-bass/lower-midrange substance and body—and more drive
Takeaway: The Thöress SE-300B offers a supremely musical and detailed listening experience with a focus on accuracy and sonic purity. When paired with the right speakers, this amplifier could be an excellent choice to bring out the best in music.
Video review
Our take on the brand
One of the finest parallel single ended 300B tube amplifier made by Fezz Audio. It provides openness and spatial sound. Powerful, sublime, very involving and uniqe to itself. Fezz Audio Lybra gives you the best sounding experience you can get from the 300B tubes.
Our summary
Product Strengths
- Delivers an incredibly rich, flavorful midrange and a sweet, relaxed treble
- Has a more sophisticated presentation than the utilitarian bent-metal chassis sported by most integrated tube amps on the market, and the smooth lines of the chassis help the amp stand out from the crowd
- Has a clever tube cage design with a clear Plexiglass front panel that delivers an unobstructed view of the tubes and is easy to install and remove
- Is seriously quiet, and there was effectively zero noise through any of the speakers
Product Considerations
- Can sound wildly different, depending on the impedance of the speakers
- The four slightly squishy feet underneath the amp may cause stains
- The power switch is on the rear of the chassis, which may be problematic if installing the amp in a cabinet with limited access
- Needs a good 20 minutes to warm up, and on initial startup, the amp sounded a bit thin, bright, and constipated, but after one album, it opened right up
- Limited power output (15Wpc) may not be sufficient for all speakers or listening preferences, especially when wanting to play music very loud
Takeaway: The Fezz Audio Lybra 300B is a well-designed tube amplifier that delivers a rich and flavorful sound. It can bring out the best in your speakers, offering clarity and great sound.
Video review
Our take on the brand
Double the Performance Trouble-free, noise-free, and double the power of traditional 300B amps. Made possible by patented circuit design. A New Classic We’re proud to continue a legacy of quality, American manufacturing with innovative new features. Ships with Tubes The 91E ships with new production 300Bs, the most popular electron tubes in the world. Made in the USA.
Product Strengths
- New patented design SCS (source current steering) allows the amplifier to have a fabulous bottom end without affecting the glorious midrange
- Proprietary noise reduction system eliminates noise that can be inherent in a single-ended design
- Circuit protects the 300Bs and keeps them in their safe operating range, so there is no chance of damaging the tube or having a shortened life
- More power from this amp than a traditional 300B, it's the difference in presentation
- It has Bluetooth, phono stage (moving coil and moving magnet), and wireless remote control
Product Considerations
- Instructions could be a little clearer about installing the 300Bs
- More warm-up is needed for each listening session than originally allowed
- The 91E was designed for operation with Western Electric manufactured 300B electron tubes
- The brands and specifications of the capacitors, resistors, transformers, internal wires, RCA jacks, switches, and binding posts are not disclosed
Comparisons (according to reviewers)
- Vs WE 91A: 91E retains what's best about the early WE 91A—its delicacy, bloom, openness, and tonal magic—and adds modern improvements
Takeaway: The Western Electric 91E is a uniquely designed amplifier providing great sound with modern features like Bluetooth and remote control, pushing what a 300B tube amplifier can achieve. It's a great option for audiophiles wanting to step up from other tube amplifier sounds.
Video review
Our take on the brand
Product Strengths
- Impressive bass response, dynamics, and power for a 12-Watt single-ended tube amplifier
- Dense, tactile, and sweet harmonic color with a clean and clear sound
- Robust build quality with point-to-point hand wiring and exceptional parts
- Easy biasing with a switch for KT88 to KT120/150 mode
- Proprietary transformers that contribute to a flatter response and deeper low bass
Product Considerations
- Careful speaker matching is required, ideally with speakers that have at least 94dB/W efficiency and a stable speaker load
- Must be turned off for at least 10 minutes, preferably 30, before turning it back on, or the rectifier tube could blow
- The correct tube type must be selected on the back of the amp, otherwise performance could be lackluster or tubes could be damaged
- The XLR input involves a slight reduction in detail due to using an input transformer to convert the incoming balanced signal to single-ended
Comparisons (according to reviewers)
- The Bryce eliminates the shortcomings of ampsandsound Nautilus when used as a speaker amplifier, adding dynamics, bass, and an extended top end
- The Bryce monoblocks are more romantic in execution, with single-ended construction—compared to the push-pull output of ampsandsound Zion
Takeaway: The Bryce Monos are high-quality amplifiers with a surprisingly powerful and detailed sound, providing an engaging listening experience. They are great for audiophiles looking for a tube amp that delivers both emotional connection and technical performance.
Video review
Our take on the brand
What competes at this price?
Our Summary
Product Strengths
- Classic single-ended triode amplifier that caresses vocals and conveys warmth in vocal recordings
- Delivers rock-solid image placement and transparency, particularly in the midband
- Acts like a higher-wattage amplifier than its 18W rating suggests
- Can drive speakers that aren't absurdly sensitive
Product Considerations
- Build quality is not as refined as the more expensive Japanese-made Audio Note products
- Bass can be waffly/uncontrolled
- Top-end frequency performance can vary
- May not impress those familiar with higher-end Audio Note amplifiers
Takeaway: The Audio Note Conquest is a single-ended triode amplifier that can provide a lush, sweet midband and is more powerful than its specifications suggest. It offers single-ended triode performance at a more accessible price point.
Video review
Our take on the brand
Our Summary
Product Strengths
- Neutral and transparent sound, more so than the reference amplifier
- Bass performance is remarkably tight, articulate, solid, and weighty, without typical 'tube character'
- Very good rhythmic capabilities
- Maintains control even with inefficient or difficult speakers
- Threads a fine middle path between a typical transistor sound and a typical tube sound—with an unmistakable midrange charm
Product Considerations
- Some might find it 'not characterful enough' because it is superbly even-handed
- With some speakers, the balance can be a little too lean and overly controlled
- Its low power rating ultimately imposes a limit on how loud one can play, which may not suit everyone
Comparisons (according to reviewers)
- Vs Ayon Spirit III: The Lybra sounds almost as powerful and robust in the bass while being perhaps even tighter and articulate, and is more highly refined with subtler and airier treble
- Vs Trafomatic tube amps and MP's Jadis amplifiers: The Lybra offers something different, it's not as voluptuous, rich, and relaxed as the Trafomatic
Takeaway: The Fezz Lybra is a neutral and controlled amplifier that offers a balanced sound without sounding like a typical tube amp, providing articulate bass and a charming midrange. It could be worth buying if you like very good sound, especially if you have efficient speakers.
Video review
Our take on the brand
Our Summary
Product Strengths
- Metal chassis provides better ergonomics and structural integrity compared to the previous wood chassis
- Robust power supply prevents compression, even with demanding speakers
- Has full bandwidth down into the low 20s without problem
- Warm lush midrange and the right 3d spatial cues up top
- Fast, accurate, proportionate sound that is warm but not dry or analytical
Product Considerations
- The reviewer mentioned they are going to work on adding name badges to the next versions
Takeaway: The amplifier is great sounding with a robust power supply. Its proportionate and warm sound makes it ideal for nearfield listening.
Video review
Our take on the brand
Our Summary
Product Strengths
- Creates an extraordinarily vivid sound
- Has the seeming ability to turn up the contrast knob on everything passed through it
- Offers great color and body
Product Considerations
- When playing very loud passages at extravagant volume levels, it clipped less elegantly
- Bass output was just a bit excessive
Comparisons (according to reviewers)
- Surpasses the Haut-Brion in terms of color saturation
- The Haut-Brion has a somewhat better sense of scale overall, is capable of greater delicacy when needed, and sounded a shade righter, timbrally, on trumpets and singing voices
- The Haut-Brion offered the more well-balanced bass, relative to the volume of sound in the rest of the audible range—the Haut's bass was also drier and a little more detailed
Takeaway: The Shindo Montille CV 391 is a hand-wired tube amp that delivers vivid and colorful sound, making music come alive. It's a great match for less sensitive speakers and offers a unique listening experience.
Video review
Our take on the brand
Our Summary
Product Strengths
- Delivers a holographic soundstage and exceptional mid-range clarity, creating a visceral and nuanced listening experience
- Offers great tonal accuracy and mid-range performance, especially with acoustic and vocal-heavy music
- The amplifier is powerful enough to drive speakers and the reviewer's headphones with ease
- Can be re-tubed with entirely NOS (New Old Stock) tubes for under $300, making it a bargain to maintain compared to other amplifiers
- Has multiple output impedances allowing matching to pretty much any headphone
Product Considerations
- Direct Heated Triodes are naturally more noisy than indirectly heated tubes
- Users with highly sensitive headphones (north of 100dB/mW efficient), like Utopia or Stellia, might experience some background noise
- Bass presentation focuses on detail and texture rather than thick, chest-thumping slam
- Caution should be used when lifting it, as it is much denser than it appears
Comparisons (according to reviewers)
- Vs ampsandsound Nautilus: The Rockwell is more delicate and nuanced, with more space and air, whereas the Nautilus produces greater slam and is more tonally dense
- Vs ampsandsound Kenzie Ovation: There are similarities in tone and vocal rendering, but the Rockwell is more powerful, creating dynamics that explode
- Vs ampsandsound Bigger Ben: The Rockwell provides more low-end detail, while the Bigger Ben reaches slightly lower with more slam
Takeaway: The Rockwell is a seductive and fun amplifier that is worth owning, especially for those who appreciate the classic American hifi sound. It offers a remarkable listening experience and the ability to use affordable NOS tubes.
Video review
Our take on the brand
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