Audio Research
LS-2
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HiFi Editorial
Audio Research LS-2 Tube Preamplifier Debuts with Class A Zero Feedback Design and Modular DAC/Phono Options
Audio Research LS-2 is a fully tube-based Class A preamplifier using a Zero Feedback design, prioritizing tonal coherence, dynamic stability, and authentic sound reproduction.
The signal path employs two 6H30 dual triode tubes in a balanced cathode-follower topology, achieving low output impedance for easy amplifier matching and long cable runs.
Modern usability complements classic architecture through a touch display enabling volume control, input renaming, brightness adjustment, and customizable color themes inspired by GhostMeters.