EMM Labs EMM Labs MTRS Stereo Amplifier
Combining immense power with striking tonal honesty, the EMM Labs MTRS Stereo Amplifier delivers neutral, wide-bandwidth authority without sacrificing emotional pull. Stereophile heard unusually truthful timbres, weighty images and commanding climaxes, while its measurements confirm a quiet, low-distortion platform. This is a seriously accomplished high-current amplifier for revealing systems and big musical demands.
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Deliciously Crispy
Sound Quality
96/100
Build Quality
91/100
Value for Money
85/100
Pros
Exceptionally honest, neutral tonality preserves the distinctive timbre of instruments and voices.
Delivers powerful, controlled climaxes, substantial bass weight, and highly corporeal image density.
Measures as a quiet, high-power amplifier with very low harmonic and intermodulation distortion.
Maintains its musical, tonally consistent character across frequency range and volume level.
Cons
At roughly 82kg, its behemoth-scale chassis makes installation and placement a serious two-person task.
Its stereo soundstage was reported as less expansive than many monoblock alternatives.
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What Reviewers Are Saying
SOUND QUALITY PERFORMANCE 96/100
Reviewers describe an exceptionally transparent, tonally truthful and emotionally involving amplifier with formidable scale and control. It combines a quiet, highly resolved presentation with powerful climaxes, convincing image density and a spatial presentation described as superb.
Transparency Resolution
96/100
Stereophile called the MTRS the most honest and neutral amplifier it had reviewed in recent memory, reporting that instruments and voices retained their distinctive, timbrally true character. Complex passages remained unusually clear, while measurements confirmed a very quiet amplifier with low noise and distortion.
Tonal Balance Musicality
97/100
The MTRS was repeatedly praised for truthfulness without sterility: Stereophile found it honest, thrilling, heart-warming and emotionally rewarding, ultimately calling it the finest and most musically complete stereo amplifier it had reviewed. SonicFlare similarly heard stable tonal character across frequency and volume, with warmth and musical connection arriving in natural proportion.
Dynamics
95/100
Reviewers heard immense bass-drum weight, forceful emphatic moments and extremely powerful climaxes, with a full and exciting midrange maintained under demanding orchestral material. SonicFlare found the amplifier to have seemingly limitless power in its room, along with shove, punch and convincing dynamic contrast.
Soundstage Imaging
94/100
Stereophile found image size, density, weight and corporeality to be among the best heard through its speakers, even when every orchestral line was active. Spatial effects were rendered superbly, while SonicFlare highlighted a compelling sense of intimacy, presence and stage aura.
Assessments of Build Quality, Usability, and Overall Propositions.
Build Quality
91/100
This is a substantial 82kg amplifier with balanced and single-ended inputs, Furutech speaker terminals, RS-232 control, a high-current driver stage and generously sized heatsinking. Measurements found the heatsink capacity more than sufficient for its output, and its response changed minimally into a simulated loudspeaker load.
Value for Money
85/100
SonicFlare cites a $65,000 asking price, placing the MTRS firmly among cost-no-object power amplifiers. The available reviews are emphatic about performance, but they do not directly compare its value against similarly priced rivals or explicitly judge whether the premium is justified.
Reviews & Sources
Professional reviews and sources for this product's Watt'n Potatoes analysis.
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Specifications
- Power/Channel into 4̸
- 400W Dynamic (RS-490 EIA) 330W RMS Continuous
- Voltage Gain
- 30dB
- Frequency Response
- 0.1Hz - 200kHz (Full Rated Power)
- Signal to Noise
- Greater than 120dB (A Weighted)
- THD+N
- Less than 0.01% (20Hz-20kHz, Full Rated Power)
- IMD
- Less than 0.01% (20Hz-20kHz, Full Rated Power)
- Slew Rate
- Greater than 100V/μs
- Damping Factor
- Greater than 200
- Inputs
- Left and Right Balanced (XLR) Left and Right Un-balanced (RCA)
- Input impedance
- 100k̶ Balanced (XLR) 47k̶ Un-balanced (RCA)
- Outputs
- Left and Right Sets of Furutech Binding Posts
- System
- RS-232 Communication Port
- Amplifier Dimensions (WxDxH)
- 544 x 584 x 297 mm
- Amplifier Weight
- 82kg
Manufacturer's Description — EMM Labs
EMM Labs is proud to present its latest innovation in audio technology: the MTRS Stereo Amplifier. The MTRS is a 400W Stereo Class A/B solid-state amplifier.
The MTRS is able to drive the most severe loads with no overall feedback, using Ed's completely re-designed high current Meitner Power Driver. The MTRS can handle any speaker load with ease, delivering high power, low distortion and wide bandwidth.
The MTRS also incorporates:
- A new proprietary power system
- Fully discrete circuits
- Fully balanced audio paths throughout
- Our custom ceramic PCB boards
- Real time protection to avoid speaker and amplifier damage
The MTRS has been meticulously designed, from its short and fully balanced audio paths throughout, to its proprietary power systems and beautifully finished chassis.
The MTRS is completely stable driving difficult, complex loads, and has the uncanny ability to drive low impedance speakers down to an Ohm! All while keeping distortion at miniscule levels.
The MTRS is the ultimate amplifier for those who demand the best in audio reproduction in a stereo package.
Just like our reference MTRX and MTRX2 amplifiers, the MTRS Stereo Amplifier is designed, manufactured, and built in Canada with no compromise.
Verified Dealers
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Authorized dealers for EMM Labs EMM Labs MTRS Stereo Amplifier
- A 10 Audio Room 4 Music — in-store — Amsterdam Nieuw-West, Noord-Holland, Netherlands (website)
- Acoustic Technologies — online and in-store — Montréal, Québec, Canada (website)
- Alpha High End — online and in-store — Brasschaat, Vlaams Gewest, Belgium (website)
- Audio Elation — in-store — Lolo, Montana, United States (website)
- Audio Federation — in-store — Palo Alto, California, United States (website)
- Audio Solutions — online and in-store — Indianapolis, Indiana, United States (website)
- Audio Venue — online and in-store — London, England, United Kingdom (website)
- Audiofeel — in-store — Doetinchem, Gelderland, Netherlands (website)
- AV Solutions - Italy — online and in-store — Aosta, Valle d'Aosta, Italy (website)
- Bending Wave USA — in-store — Davie, Florida, United States (website)
and 38 more verified dealers