Preamplifiers — Audio Research LS-3

Description, images, technical data and specifications

Audio Research LS-3
Image source — © Audio Research

The Audio Research LS-3 preamplifier is designed as a fully linear preamplifier stage and uses fully balanced differential circuitry. The input stage uses JFET transistors, which are known for their low noise performance and can be particularly effective when combined with high-resolution sources.

Specifications

Model name
LS-3
Analog inputs (balanced)
2
Analog inputs (single-ended)
4
Analog outputs (balanced)
1
Analog outputs (single-ended)
1
Gain (dBu)
20
Input sensitivity (mV)
N/A
Output voltage (V)
N/A
Input impedance (balanced) (Ω)
25 000
Input impedance (single-ended) (Ω)
25 000
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)
10
Frequency response high +/- 3dB (Hz)
40 000
Signal to Noise Ratio (SNR, unweighted) (dB)
75
Total Harmonic Distortion + Noise (THD+N) (%)
< 0,007
Dimensions (mm)
482.6 × 177.8 × 444.5
Weight (kg)
15
Official link
https://audioresearch.com/new_website/audio-research-ls-3-preamplifier/