Audio Research
Audio Research Reference 330M
Best ultimate performance for discerning audiophiles.
The Audio Research Reference 330M is a hand-built masterpiece designed to deliver ultimate performance. It offers an all-tube signal path, from ECC83 input tubes to KT170 output tubes, with tube regulation in the power supply. This amplifier provides the ease of high power with a delicacy and purity typically found in low-power amplifiers, featuring tonal saturation, density, and exceptional specificity of recording space. It offers extension at both frequency extremes and can command statement-level loudspeakers through their lowest octaves without retreat. Auto-bias ensures consistent performance, and the output tubes are rated for 3,000 hours of life.
$45000.00
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Owner Satisfaction
4.7
/ 5
Category Rank
551
/ 2552
#551 in Power Amplifiers
Price vs Category Average
+445%
Above average
Power Output
330
/ watts
Who it's for
- Audiophiles seeking ultimate fidelity and an immersive, lifelike listening experience
- Listeners with challenging speakers desiring authoritative, uncompressed sound
- Discerning collectors valuing heirloom-quality audio equipment and lasting value
Who should skip it
- Budget-conscious audiophiles or those new to high-end audio
- Users preferring low-maintenance systems or living in warmer climates
- Apartment dwellers or those with limited rack space
Key Specs
Power Output
330 watts
Tube Biasing
Auto-Bias
Output Taps
4Ω, 8Ω
Tube Compliment
(6) KT170 Power Output, (1) ECC83 & (1) 6H30 input, (1) 6550 & (1) 6H30 Power Supply
Inputs
XLR & Single-Ended
Controls
12V Triggers, RS-232 Remote Control
Power Saving
Standby Mode
Weight
101 lbs
Features
- Ultimate performance without worry
- Auto bias for rock-steady consistency
- Long output tube life (3,000 hours)
- Fully-balanced design with single-ended inputs
- 12 volt triggers for remote turn-on
- RS232 control
- Auto-off power saving mode
- Fan speed and meter light control
What customers say
Customers consistently praise the Audio Research Reference 330M for its truly exceptional sound quality and masterful design. Reviewers highlight its ability to reproduce music with astonishing clarity, dynamic range, and emotional depth, creating an immersive listening experience. The amplifier's robust construction and elegant aesthetic are also frequently noted, reflecting a premium build that matches its sonic prowess. While a significant investment, enthusiasts feel its performance justifies the cost, delivering a reference level audio experience that transforms their music collection.
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