Preamplifiers — Audio Research LS-2

Description, images, technical data and specifications

Audio Research LS-2
Image source — © Audio Research

At the heart of the Audio Research LS-2 are two 6H30 tubes – dual triodes long respected in audiophile circles. The unit runs in pure Class A and uses a cathode-follower topology, helping achieve a low output impedance. This makes matching with a wide range of power amplifiers and long cable runs easier, without sacrificing dynamics or control. Fully balanced circuit design further improves immunity to interference in real-world listening environments.

Specifications

Model name
LS-2
Analog inputs (balanced)
2
Analog inputs (single-ended)
4
Analog outputs (balanced)
1
Analog outputs (single-ended)
1
Gain (dBu)
12
Input sensitivity (mV)
N/A
Output voltage (V)
N/A
Input impedance (balanced) (Ω)
25000
Input impedance (single-ended) (Ω)
25000
Output impedance (balanced) (Ω)
10
Output impedance (single-ended) (Ω)
25
Maximum output level (balanced) (dBu)
N/A
Maximum output level (single-ended) (dBu)
N/A
Volume control range (dBu)
N/A
Frequency response low +/- 3dB (Hz)
0
Frequency response high +/- 3dB (Hz)
40000
Signal to Noise Ratio (SNR, unweighted) (dB)
N/A
Total Harmonic Distortion + Noise (THD+N) (%)
0.03
Dimensions (mm)
48.26 x 17.78 x 44.45
Weight (kg)
21.8
Official link
https://audioresearch.com/new_website/audio-research-ls-2-preamplifier/