Audio Research
Audio Research Reference 750 SEL Mono Amplifier
Best ultimate fidelity for discerning audiophiles seeking unparalleled sound reproduction.
Experience the pinnacle of vacuum-tube amplification with the Audio Research Reference 750 SEL monoblock amplifier. This limited edition powerhouse delivers over 750 watts of continuous power, effortlessly driving any speaker with unparalleled control and sonic accuracy. It reveals intricate details against a silent background, creating a palpable and tangible soundstage. The SEL version boasts sonic enhancements through upgraded wiring and capacitors, solidifying its status as a world-class vacuum-tube amplifier. Designed for the most demanding high-performance audio systems, it offers a transformative musical experience.
$2813.90
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Owner Satisfaction
4.8
/ 5
Category Rank
38
/ 2552
#38 in Power Amplifiers
Price vs Category Average
-66%
Below average
Power Output
7502020
/ watts per channel continuous from Hz to kHz
Who it's for
- Discerning audiophiles seeking the pinnacle of musical reproduction and emotional engagement.
- Listeners with power-hungry speakers desiring absolute control and dynamic headroom.
- Serious collectors valuing heirloom-quality audio equipment and long-term reliability.
Who should skip it
- Budget-conscious buyers or those seeking more accessible high-end audio solutions.
- Users preferring maintenance-free operation and solid-state reliability.
- Individuals with limited space or those preferring compact, discreet audio components.
Key Specs
Power Output
750 watts per channel continuous from 20Hz to 20kHz
Total Harmonic Distortion
0.5%
Frequency Response
1 Hz to 200 kHz (-3dB points at 1 watt)
Input Impedance
200K ohms Balanced
Output Taps
4, 8, and 16 ohms
Bias Type
Adjustable
Signal to Noise Ratio
110dB (IHF-A weighted, input shorted, 16 ohm output)
Power Supply Energy Storage
1300 joules
Features
- Ultimate vacuum-tube amplifier with massive power
- Drives any speaker with total control
- Resolves details with vivid reality
- Startling temporal and timbral accuracy in bass
- Limited edition SEL version with sonic enhancements
- Utilizes sixteen KT150 vacuum tubes per channel
- Compatible with 4, 8, and 16 ohm speaker loads
- Balanced XLR input connectivity
What customers say
Customers consistently praise this amplifier for its exceptional sound quality and sophisticated design. Reviewers frequently highlight its ability to reproduce music with remarkable clarity, depth, and dynamic range, creating an immersive listening experience. The build quality is often described as superb, reflecting a premium product crafted with meticulous attention to detail. Owners feel a profound sense of satisfaction, considering it a pinnacle of audio engineering that elevates their entire sound system. The aesthetic appeal and robust construction further contribute to its highly regarded status among audiophiles.
Know before you buy
The SEL is a limited-edition release of only ten pairs. It features upgraded internal wiring and specialized capacitors that provide a significant sonic refinement over the standard model.
Yes. With 750 watts of power and dedicated output taps for 4, 8, and 16-ohm loads, this amplifier is designed to drive virtually any speaker with complete authority.
Maintenance is surprisingly minimal. Audio Research utilizes precise tube matching, which ensures stability and reduces the need for frequent manual adjustments.
Each unit weighs 170 lbs and measures 13.5 by 23 by 20.8 inches. You will need a very sturdy, dedicated equipment rack or floor space capable of supporting significant weight and providing adequate ventilation for the vacuum tubes.
The Reference 750 SEL is designed with a 200K ohm balanced input impedance. To achieve the best performance and signal integrity, a balanced connection is recommended.
The amplifier features 1300 joules of energy storage in its power supply. This massive reserve allows the amplifier to handle sudden musical transients and deep bass notes with startling accuracy and speed.
Still have a question?
Ask Hayley anything about this product before you decide.