Reference 330M Monoblock Power Amplifiers By Audio Research
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Product Summary:
Audio Research Reference 330M are flagship tube monoblock amplifiers that deliver exceptional power, precision, tonal richness, and dynamic control. Its all-tube design provides immersive musicality, expansive soundstage performance, and effortless authority for high-end loudspeaker systems.
Click To Read MoreTrial Period
90 Days (Exchange)
Countries Shipped
USA
Burn-In Time
100 Hours
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Amplifiers, Audio Research, Tube Amplifiers
Reference 330M Monoblock Power Amplifiers By Audio Research
$90,000
Audio Research Reference 330M are flagship tube monoblock amplifiers that deliver exceptional power, precision, tonal richness, and dynamic control. Its all-tube design provides immersive musicality, expansive soundstage performance, and effortless authority for high-end loudspeaker systems.
Click To Read MoreProduct Description
The Audio Research Reference 330M monoblock amplifiers represent the pinnacle of high-end tube amplification, engineered to deliver extraordinary power, precision, and musical realism. Designed to drive even the most demanding loudspeakers with effortless authority, it combines exceptional control with breathtaking dynamic performance.
Built around an all-tube signal path, the Reference 330M features premium vacuum tube architecture from its ECC83 input stage to its KT170 output section, along with tube-regulated power supplies for enhanced purity and refinement. The result is a rare balance of commanding high-power output and the smooth, natural musicality typically associated with lower-powered tube amplifiers.
Listeners can expect remarkable tonal richness, expansive soundstage depth, and exceptional detail retrieval. The amplifier delivers a fluid, immersive presentation while maintaining razor-sharp precision and outstanding transient response when required. Frequency extension is impressive across the entire spectrum, offering deep, authoritative bass control alongside open, airy highs.
Ideal for statement-level audio systems, the Reference 330M is crafted for audiophiles seeking uncompromising performance, emotional musical engagement, and world-class tube amplification.
FEATURES:
- The 330M was designed to provide ultimate performance without worry.
- Auto bias assures rock-steady consistency, minute-by-minute, day in and day out.
- Output tube life is 3,000 hours, providing many years of listening pleasure.
- A fully-balanced design, the addition of single-ended inputs allows its compatibility with virtually any source.
- 12 volt triggers allow the 330M to be turned on remotely, just by powering up your Reference preamp or a master control.
- RS232 control.
- Auto-off control will turn 330M off if no signal is sensed in two hours (defeatable).
- Fan speed control.
- Tube hour meter.
- 4-8 ohm speaker outputs.
- Tube monitor.
- Meter light control allows dimming or off.
- Meter action switch allows meter needle to be turned off.
Reviews
Stereophile
“My deepest gratitude to everyone at Audio Research. You’ve done Bill Johnson’s legacy proud. The Audio Research 330M is a great amplifier, more than worthy of Stereophile’s Amplifier of the Year award when award time next comes ’round in 2026 “
https://www.stereophile.com/content/audio-research-reference-330m-monoblock-power-amplifier
HiFi Pig
“Stunning looking amplifiers, we are big fans of the AR Ghostmeters!”
https://www.hifipig.com/audio-research-reference-330m-monoblock-amplifiers/
Videos
Specificarions
- Power Output: 330 watts
- Tube Biasing: Auto-Bias
- Output Taps: 4Ω, 8Ω
- Tube Complement:
- (6) KT170 Power Output
- (1) ECC83 & (1) 6H30 Input
- (1) 6550 & (1) 6H30 Power Supply
- Inputs: XLR & Single-Ended
- Controls:
- 12V Trigger
- RS-232 Remote Control
- Power Saving: Standby Mode
- Weight: 101 lbs
Know more details about products
Product Description
Lehmann Black Cube SE II – Precision Phono Stage for True Audiophiles
The Black Cube SE II builds on the acclaimed SE circuit, upgraded with superior sockets and an adjustable bass filter, allowing you to fine-tune your system to your personal listening preferences. Designed for maximum musical engagement, it delivers the sensation that your favorite recordings were crafted just for you, bringing instruments and vocals closer than ever.
Tailored for Every System
Compatible with nearly all MM and MC cartridges, the Black Cube SE II includes solder-free slots for custom impedance adjustments, plus an extra hardwired plug-in location for immediate flexibility. Optional matching resistors can be provided with your order at no extra cost, making it easy to optimize the phono stage for your system.
Audiophile-Grade Audio Circuitry
At its core, a high-precision passive RIAA filter network sits between two linear gain stages, built with surge-proof, narrow-tolerance polypropylene capacitors. This design preserves transients, dynamics, and timbres with exceptional clarity. Professional-grade input stages reduce noise while enhancing precision and power. Additional modules handle hum, high-frequency interference, and random voltage suppression, and the double-sided audio board ensures a low-interference signal path.
Dependable PWX Power Supply
The external PWX power supply features a custom toroidal transformer with static shielding, providing stable, safe, and powerful operation. Gold-plated Neutrik XLR connectors maintain secure connections, while shielded cables and mechanically damped aluminum housings minimize vibrations and interference.
Elegant Design
With a choice of silver, black, or chrome-plated front panels, the Black Cube SE II combines audiophile-grade performance with a refined aesthetic that looks as good in your HiFi rack as it sounds in your system.
Professional Endorsement
Known for its neutral, natural sound, Lehmann equipment is trusted by professional recording studios and music experts worldwide. The Black Cube SE II offers a high-fidelity listening experience that reveals every nuance in your favorite recordings.
Note: The sonic profile of Lehmann gear is perhaps the most neutral we can find. This brand is quite popular with our professional music/recording studio clients.
Reviews
AUDIO
“Upgraded to the SE version by the PWX, it was definitely poking the fire again like almost no other phono pre in its price range. Merciless heavy rock by Vanilla Fudge or massive bigband attacks by Count Basie were just about to blaze through the listening room. Pimped in such a hot manner, the Lehmann Black Cube SE II is state-of-the-art.”
https://jaguaraudio.com/wp-content/uploads/2021/06/EN-2020_01-AUDIO-Black_Cube_II.pdf
Hifi News
“This is a true audiophile phono stage and, partnered with equipment of equal quality, the results are remarkable. Indeed, the SE II is difficult to fault even compared to the competition in a much higher price bracket. The exceptionally low background noise allied to a fabulous rhythmic and tonal rendition makes it worthy of consideration for those seeking the most detail from their vinyl without having to make a hyperspace price jump.”
https://jaguaraudio.com/wp-content/uploads/2021/06/EN_review_Hifi_News_02_2010_SEII_screen.pdf
Hifi News
“To ?nd more depth and detail in music I know so well was a remarkable experience and I warmed to this little gem of a phono stage all over again.”
Specifications
The impressing technical details of the Black Cube SE II.
Sensitivity for output level 775 mV/ 0 dB (with activated high gain switch): MM: 3.8 mV/1 kHz; MC: 0.38 mV/1 kHz
Gain 1 kHz: MM: 46 dB; MC: 66 dB
Maximum input level 1 kHz: MM: 45 mV; MC: 4,5 mV
Signal to noise ratio (RMS unweighted): MM: 71 dB; MC: 63 dB
Gain: 36 dB, 46 dB, 56 dB, 66 dB
Channel separation: > 80 dB at 10 kHz
Input impedance: 47 kohms, 1 kohm, 100 ohms, 1 x custom load, 1 x hardwire slot
Output impedance: 47 ohms
Input capacitance: 100 pF
Channel mismatch: typ. 0.5 dB
Bass filter: 16 settings between 7 Hz and app. 90 Hz
Power consumption: < 3 W
Outer dimensions W x D x H:
Audio section: 114 mm x 124 mm 50 mm
PWX power supply: 93 mm x 233 mm x 45 mm
Weight:
Audio section: 0.6 kg netto
PWX power supply: 1.0 kg netto
Reviews
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