Estimated price (community-sourced)
Around — community and catalog average, updates slowly
About the LS3
The Audio Research Corporation LS3 is a solid-state stereo line-stage preamplifier introduced for the 1992–1993 model years. It uses a short, direct signal path, DC-coupled inputs, electronically regulated high- and low-voltage supplies, and a Class-A gain/output circuit. Features include multiple line-level inputs, a Direct Gain Path intended to bypass most switching and control circuitry, tape monitoring, and two sets of single-ended main outputs for driving multiple power amplifiers or bi-amping. The LS3B variant adds balanced outputs and has somewhat different specifications. This information refers to the original LS3, not the newer Audio Research LS-3 bearing the same model designation.
Specifications
Analog Output
Analog signal output specifications
- THD
- 0.010%
- SNR
- 100 dB
- Output Voltage
- 2.0V RMS
Connectivity
Input and output connections
- Digital Inputs
- USB, Coax, Optical
- Analog Inputs
- Single-Ended (SE), Balanced (XLR)
Never published
- Phono Preamplifier — the maker never published this. Checked 30 sources on 6 Sept 2026
Specifications are community-contributed and may not be accurate or complete. Verify all details with the manufacturer before making purchasing decisions. Terms & Conditions