Audio Research D-90 (B)

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The Audio Research D-90 (B) is a high-end, tube-based preamplifier originally introduced in the mid-1970s. It is part of Audio Research's classic Dolution series, which also includes the D-90, D-100, and D-110 models.The D-90 (B) features seven inputs, including four balanced and three unbalanced, as well as a tape output. It uses four pairs of 6922 tubes in the signal path, along with additional 12AX7 and 12AU7 tubes for various functions. The impedance-select circuit lets users switch between high and low levels, making it compatible with low-output MC cartridges and high-output MM cartridges.The D-90 (B) is known for its rich, full-bodied sound, with a natural and engaging tone that draws the listener in. It's highly regarded for its low-level resolution, detail, and musicality, making it a top choice for audiophiles seeking a lush, immersive listening experience.The (B) designation refers to a minor upgrade that improved the unit's overall performance and reliability, including the use of higher-quality components. Despite being nearly five decades old, the D-90 (B) continues to be a sought-after and respected preamplifier among audiophiles and collectors, and can often fetch high prices on the secondhand market.

Power Output: 80W into 16Ω (stereo)
Frequency Response: 25Hz to 20kHz
Distortion: 0.5%
Damping Factor: 25
Speaker Impedance:
Input Sensitivity: 1.2V
Signal to Noise Ratio: 90dB
Dimensions: 490 x 180 x 420 mm
Weight: 29 kg
Year: 1980
Price: