Audio Research LS-2 Preamplifier

Inspired by the award-winning 1992 LS2 line stage, the LS-2 delivers exceptional musical performance at its price point. This pure tube, zero-feedback, Class A design uses dual 6H30 tubes to create expansive soundstage imaging, rich harmonic detail, and natural musicality. It combines clarity, dynamic impact and smooth vacuum tube warmth with refined detail resolution. The elegant chassis maintains Audio Research’s signature aesthetic, while a new touchscreen display adds customizable input naming, brightness, color options and other controls. The interface also features styling inspired by the brand’s flagship GhostMeters for a cohesive modern look.

Frequency Response: -0.3dB 10Hz, -0.3dB 40kHz at rated output (Balanced, 100k ohms load)

THD+Noise: <0.03% at 2V RMS BAL Output, 10Hz-80kHz Unweighted

Noise: -77dBV at Max Volume (99)

Crosstalk: -76dB

Gain: 12 dB Balanced Output ; 12 dB SE Output

Input Impedance: 25K ohms BAL and SE

Output Impedance: 10 ohms BAL, 2a5 ohms SE

Output Polarity: Balanced: Inverting ; SE: Inverting

Power Requirements: 120VAC 60Hz 35W Maximum

Standby: 120VAC 60Hz 4.4W

Tubes Required: 2 x 6H30

Dimensions:

Width: 19" (48.26 cm)

Height: 7” (17.78 cm)

Depth: 17.5” (44.45 cm)

Weight: 33lbs (15kg) Net, 48lbs (21.8kg) Shipping