Audio Research Reference 330M Monoblock Power Amplifier

The Reference 330M is Audio Research’s flagship amplifier, combining over 50 years of engineering with advanced all-tube design. Featuring an all-tube signal path from ECC83 inputs to KT170 outputs, plus tube-regulated power supplies it delivers exceptional dynamics, tonal richness, precision, and realism. Despite its immense power the 330M maintains the delicacy and purity often associated with lower-powered amplifiers. It offers commanding speaker control, deep infrasonic bass, expansive soundstage detail and lifelike musical immersion. Designed as the ultimate expression of Audio Research’s heritage, the 330M brings recordings to life with remarkable clarity, emotion, and energy.

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.

Technical Specifications:

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 Ibs