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Estimated price (community-sourced)
Around — community and catalog average, updates slowly
The L2 Reference line-level preamplifier by Lamm Industries is a dual-mono, hybrid design that uses solid-state MOS-FET circuitry for amplification together with a separate, all-tube power supply for rectification and voltage regulation. Its topology is a pure Class A, super-linear high-voltage MOS-FET design with no overall feedback, and all audio stages—including the high-current output buffers—are single-ended. The dedicated power-supply chassis employs vacuum tube rectification and regulation with one 12AX7/ECC83, one 6C19P, one 5651A, and two 12AX3 rectifier tubes. The L2 offers extremely high transparency, a very low perceived sonic signature, and three-dimensional soundstage reproduction, and is intended as Lamm's reference-level line stage. Connectivity includes three unbalanced RCA line inputs (Line 1, Line 2, Direct), one tape loop, and both balanced XLR and single-ended RCA outputs, plus an output signal phase-inversion switch for the RCA outputs and remote on/off control for compatible Lamm power amplifiers. The control unit and power supply are housed in separate 19" W x 4.5" H x 13.875" D chassis, each weighing approximately 15.4 lb for the preamplifier and 19 lb for the power supply. Typical power consumption is about 75 W, and the unit is factory-configured to operate on all common international AC line voltages (100/120/220/230/240 V) without internal modification. The L2 is handcrafted in limited quantities using high-quality parts such as low-noise, precision resistors, stepped attenuators, film capacitors, and gold-plated connectors, consistent with Lamm Industries' reference-grade construction.
Amplification power output and characteristics
Analog signal output specifications
Input and output connections
Size, weight, and appearance
Specifications are community-contributed and may not be accurate or complete. Verify all details with the manufacturer before making purchasing decisions. Terms & Conditions
Components that show up alongside the L2 in real systems. A verdict means the pair has been checked for compatibility and headroom — open it to see how the two get along.
The closest alternatives on specs, description and the systems they turn up in, with the specs they share set side by side.
The WAVE Tube's signal-to-noise is 90 dB against the L2's 82 dB, its thd 0.010% against 0.030%, its output impedance 60Ω against 130Ω, and its input impedance 47000Ω against 51000Ω.
The KRC-HR's signal-to-noise is 96 dB against the L2's 82 dB, its thd 0.010% against 0.030%, its output impedance 5Ω against 130Ω, and its input impedance 47000Ω against 51000Ω.
The Symmetrical's signal-to-noise is 95 dB against the L2's 82 dB, its output impedance 70Ω against 130Ω, and its input impedance 47Ω against 51000Ω. Both share thd (0.030%).
The Marconi II's signal-to-noise is 90 dB against the L2's 82 dB, its thd 0.010% against 0.030%, and its output impedance 0.1Ω against 130Ω. Both share input sensitivity (0.1V RMS).
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