Audio Research D-80 Amplifier

Pentode operation is known for its dynamic punch and high-energy delivery. In the D-80, this translates to a sound that is authoritative and impactful, providing the drive needed to bring complex musical passages to life while maintaining the harmonic richness associated with vacuum tubes.

The auto-bias system eliminates the need for manual adjustment or specialized tools when replacing tubes. It continuously monitors and optimizes the bias current for each tube, ensuring consistent performance and extending tube life without requiring any technical intervention from you.

Yes. The D-80 is equipped with dedicated output terminals for 4, 8, and 16-ohm speakers. This versatility ensures you can achieve optimal power transfer and impedance matching with a wide variety of high-end loudspeaker designs.

To fully utilize the benefits of the D-80's fully balanced differential architecture, you should pair it with a preamplifier that offers balanced XLR outputs. While you can use adapters, a true balanced signal path from source to amplifier will provide the best noise rejection and signal integrity.

The 12V trigger allows the D-80 to power on or off automatically in sync with your preamplifier or control system. Once connected with a standard trigger cable, the amplifier will wake up when your system starts, simplifying your daily listening routine.

The KT150 is chosen for its exceptional linearity, power handling, and reliability. By using two pairs of these robust tubes, the D-80 achieves its 80-watt-per-channel output while maintaining the clarity and emotional resonance that Audio Research is known for.