Solid-State, the Audio Research Style

The LS-3 represents the work of Audio Research's solid-state engineering team, and the result doesn't sound like a compromise or a departure. The JFET input stage brings the kind of natural, musical character that makes this preamp feel at home in the lineup, while the bipolar voltage amplifier stage provides the gain and linearity needed for reference-grade performance. The Class-A output stages ensure low distortion and maximum transparency, regardless of the load presented by the power amplifier.

True Dual-Mono Construction

The LS-3's signal path is fully dual-mono from input to output, with separate power transformers for each channel. The power supply uses a zero gain-cascaded voltage reference with linear regulation, providing exceptionally low noise and the kind of instantaneous current delivery that translates to dynamic headroom. This isn't a single-transformer design with split windings; it's genuine dual-mono construction that keeps channel separation absolute and the noise floor well below audibility.

Touchscreen Control with a Modern Interface

Audio Research's new touchscreen display brings modern convenience without cluttering the minimalist faceplate. Input naming lets you label sources for instant identification, while display intensity and color options let you match the LS-3 to your room's lighting. The display font carries forward the style of the Reference GhostMeters, maintaining visual continuity across Audio Research's product line. All settings are accessible from the front panel or the included remote control.

Optional DAC & PHONO Modules

The LS-3 can be configured with an optional DAC card featuring an AKM Velvet Sound chip, providing USB, Optical, Coax, and Bluetooth inputs with upsampling across all digital sources. The optional phono card handles both MM and MC cartridges with adjustable MC loading from 50 to 1,000 ohms, all controllable via the remote. These cards can be added at time of purchase or installed later, making the LS-3 a flexible platform that grows with your system. Order the LS-3 Only for the pure analog preamp, or add the DAC, Phono, or both cards using the Version selector.

Our Chassis Design & Build Quality 

The LS-3 shares its all-aluminum chassis with the LS-2, a design carefully engineered for the stability and rigidity needed to isolate sensitive analog circuits from vibration and electromagnetic interference. The chassis is elegant and modern while maintaining the silhouette that has defined Audio Research products for decades. Available in Black or Silver anodized finish, the LS-3 pairs naturally with Audio Research power amplifiers and source components.