Audio Research LS3B Preamplifier and D120 Stereo Amplifier

• System Overview – The Audio Research LS3B Preamplifier and D120 Stereo Amplifier, released in the early 1990s, form a solid-state Class AB pairing known for exceptional transparency, dynamic authority, and the classic Audio Research house sound with precise tonal balance.

• High-Resolution Line Stage – The LS3B uses a fully balanced, low-noise circuit with wide bandwidth and premium discrete components, delivering excellent detail retrieval, stable imaging, and superior channel separation for accurate two-channel reproduction.

• Powerful Class AB Amplification – The Audio Research D120 Stereo Amplifier provides 120W per channel of clean, controlled Class AB power with high-current capability, enabling confident drive of demanding loudspeakers while maintaining composure and refinement.

• Exceptional System Synergy – Together, the Audio Research LS3B Preamplifier and D120 Stereo Amplifier offer fast transients, low distortion, and highly coherent musical flow, making the combination ideal for revealing loudspeaker systems in dedicated listening rooms.

• Dimensions – LS3B: approx. 480 mm (W) × 130 mm (H) × 330 mm (D). D120: approx. 480 mm (W) × 180 mm (H) × 430 mm (D). Designed to fit standard Audio Research rack spacing.

• Weight – LS3B: approx. 7 kg. D120: approx. 27 kg. The amplifier’s heavy transformer and robust chassis provide excellent mechanical damping for stable long-term performance.