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Lamm Industries L2 Reference preamplifier:
Sidebar 1: Specifications Description: Dual-mono, tubed, line-level preamplifier with separate power supply. Inputs: 3 single-ended, 1 tape loop on RCAs. Outputs: 1 set each balanced, single-ended. TKD stepped potentiometers and built-in remote on/off for Lamm Industries power amplifiers. Choke-filtered hybrid design: tube rectification, solid-state output. Tube complement: one 12AX7/ECC83 voltage regulator, one 6C19P voltage regulator, one 5651A voltage reference, two 12AX3 rectifiers. Maximum voltage gain: 14.87dB ±0.2dB. Input sensitivity: 135mV RMS. Frequency response: 20Hz-20kHz, +0/-0.2dB; 4Hz-140kHz, +0/-3dB. THD: <0.03%. Slew rate: 30V/µs. Noise: >82dB (unweighted). Input impedance: 41k ohms. Output impedance: 130 ohms. Power consumption: 75W.
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