Audio Research LS3 Preamplifier

Audio Research LS-3 Preamplifier features a fully balanced differential architecture incorporating ultra-low-noise JFET input stages, bipolar voltage amplification, and pure Class-A output stages housed within a rigid, vibration-damping all-aluminum chassis. Engineered with a true dual-mono layout powered by independent transformers for each channel, it integrates linear power supplies, zero-gain cascaded voltage references, audiophile-grade balanced XLR and single-ended RCA connections, and expansion bays for modular DAC and phono stages. This line-level component delivers the spatial dimension and organic fluidity associated with classic reference gear alongside the instantaneous transient speed, background quiet, and maintenance-free ease of modern solid-state design.

Critical evaluations and long-term owner reports consistently celebrate the preamplifier for its transparent neutrality, expansive soundstaging, and resolving power. Reviewers frequently praise its ability to disappear from the signal chain, delivering grain-free high frequencies, a textured midrange, and articulate bass authority without introducing artificial emphasis or clinical dryness. Listeners also emphasize its rock-solid reliability and long-term stability, noting that the brand's celebrated Minnesota craftsmanship makes it an enduring, highly respected centerpiece in high-fidelity audio.

Integrating this preamplifier into an audio chain brings master-tape purity and effortless dynamic realism to everyday listening, establishing an uncompromised foundation that allows every source component and power amplifier to perform at its peak musical potential.

Brand	Audio Research
Type	Preamplifiers
Component Color	Black
MSRP	$7,450.00
SKU #	102494
Cosmetic Rating	8 - Very good condition with minimal visible cosmetic wear including minor spotted blemishes on top surface. Despite these cosmetic imperfections, this preamplifier sounds great, and will make a fine addition to any setup.
Functional Notes	Operational condition of this item is excellent, fully tested and no issues found.
Age	1 year
Owners	1
Service History	None