Audio Research - LS2 MKII Preamplifier

Audio Research LS2 MkII – Reference High-End Preamplifier

Exceptional Audio Research LS2 MkII, a prestigious line preamplifier, manufactured in the USA by the renowned American brand, a world reference in high-end audio.

The LS2 MkII is a highly respected model among audiophiles for its transparency, natural timbre, and excellent frequency extension, offering a balanced, detailed, and musical sonic presentation.

Technical Features

Model: LS2 MkII

Type: Stereo line preamplifier

Topology: Hybrid circuit (FET + tube) in Class A

Valve: 1 × 6922

Gain:

Main output (RCA): ~18 dB
Balanced output (XLR): ~24 dB

Frequency response: 1 Hz – 100 kHz (±0.5 dB)

THD: less than 0.01%

Output impedance: approx. 200 ohms (RCA)

Inputs: multiple line inputs (RCA)

Outputs:

1 × RCA (single-ended)
2 × XLR (balanced)

Tape Output

Power supply: 230V

Construction: sturdy metal chassis

Origin: USA

Sound Performance

The LS2 MkII stands out for:

Wide and well-defined soundstage
Excellent instrument separation
Natural and transparent timbre
Controlled and articulate bass
It is an excellent choice for demanding high-fidelity systems, combining technical precision with musicality.

Overall Condition

Fully functional
Very good cosmetic condition for its age
No impact on performance
Professional packaging included