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It's called Lore
because true sound
carries history.
The Lore is our storied vacuum tube headphone amplifier, long regarded for its musicality, craftsmanship, and timeless design. Doubling as a low-power speaker amplifier, it brings exceptional flexibility to any listening space. Inspired by classic tube designs of the 1950s through the 1970s, each amplifier is meticulously hand-wired using premium components, an external power supply, military-grade switches for lasting reliability and exceptional performance.
Rooted in classic tube topology and refined through decades of listening, Lore delivers warmth, depth, and presence in equal measure. Handcrafted with premium components and carefully selected tubes, it offers a sound that feels alive, personal, and deeply connected to the artist.
Note: The Dual-Mono power supply includes a JLP-07 power cord. The Solid-State Power Supply does not include 5AR4 or OC3 P.S. tubes. If you have any questions about choosing a power supply, we're happy to help.
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A heritage of analog
sound design.
Inspired by the classic tube amplifiers that defined generations of music lovers, the Lore uses a 12AU7 tube gain stage to drive a pair of 25L6 tubes in push-pull per channel, delivering ample power for nearly any headphone while also driving high-efficiency desktop speakers. Four direct transformer output impedances ensure optimal matching for 8 Ω speakers, standard headphones (8–32 Ω), and high-impedance headphones (128–300 Ω).
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Design philosophies
01. Point-to-Point
Every Coffman Labs amplifier is meticulously hand-wired in our lab using carefully selected premium components and precision assembly techniques. We believe every solder joint, each wire route, and all component placements contribute to long-term reliability, serviceability, and electrical performance. No digital components or circuit boards are used in our vacuum tube amplifiers. Each amplifier is individually assembled, inspected, tested, and auditioned before leaving our laboratory, reflecting our uncompromising commitment to engineering excellence.
02. Golden Age of Analog Audio
Drawing upon the timeless design philosophies and proven amplifier topologies of the 1950s, '60s, and '70s, we honor the engineering innovations that defined the golden age of analog audio. Rather than simply recreating vintage designs, we thoughtfully refine and advance them using carefully selected components, meticulous craftsmanship, and decades of experience. The result is an amplifier that captures the musicality, realism, and emotional engagement that made these classic circuits legendary while faithfully reproducing today's finest analog and high-resolution digital recordings.
03. Vacuum Tubes
For more than a century, vacuum tubes have remained the reference standard for musical reproduction. At Coffman Labs, we source exceptional New Old Stock (N.O.S.) tubes from around the world. Every tube is individually characterized using the industry renowned Röhrentest tube analyzer and verified on a Tektronix 576 Curve Tracer, enabling us to evaluate its true electrical characteristics, not merely whether it passes a conventional emission or mutual-conductance test. Only those that satisfy our exacting standards are carefully selected, matched, and finally auditioned by ear in our finished amplifiers.
04. Authentic Performance
The finest audio equipment should never impose its own character upon the music. Instead, it should disappear entirely, allowing the artistry, emotion, and atmosphere of the original performance to emerge with complete naturalness. From the quietest breath between notes to the effortless dynamics of a full orchestra, every Coffman Labs amplifier is engineered to preserve the integrity, texture, and realism captured in the original recording. Close your eyes, and the equipment itself fades from awareness. What remains is the performance.
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A truly unique product
Overview
Classic Tube Topology
Tube-driven analog design using matched N.O.S. 25L6GT or 50L6GT output tubes in push-pull, driven by 12AU7s—voiced for rich, vintage-inspired sound with modern resolution.
Flexible Power Architecture
Standard discrete solid-state power supply or a dual-mono upgrade featuring dual 5AR4 tube rectification and dual OC3/VR105 tube regulation for maximum performance. The upgrade comes standard with the proven Jena Labs JLP-07 power cord. (Cord upgrades available)
Handcrafted in the USA
Built at Coffman Labs in Portland, Oregon, for exceptional quality, rugged reliability, and long-term serviceability.
Precision Machined Chassis
Fully machined, heavy-duty enclosure with interlocking construction for durability, stability, and decades of use.
Premium Component Selection
Jena Labs UltraWire© internal wiring, Cardas quad core solder and binding posts, Neutrik RCA and XLR4 connectors, custom transformers, and carefully selected N.O.S. P.I.O. Capacitors and Vishay/Dale resistors throughout.
True LN2 Cryogenic Process
Internal wiring and relevant components are individually treated with a true liquid-nitrogen (LN2) cryogenic process, refining the materials to improve signal integrity, resolution, and long-term performance.
True Point-to-Point Wiring
Optimized mechanical and electrical contact integrity for superior signal flow and long-term performance.
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Limited Run,
Limitless Sound.
Upgraded and refined, our acclaimed headphone amplifier launches in a limited run of 50—built with care, built to endure.
