Lamm LL2.1 Stereo Tube Preamplifier



Lamm Industries has been a venerable brand name in high end audio for decades. They build each product when it is ordered, so you won't see a bunch of any particular model "in stock" anywhere. Their specialty is tube-based preamplifiers and power amplifiers, with their top-of-the-line power amplifier selling at well over $100,000. The current review focuses on the model LL2.1 stereo preamplifier. At $5,990, it is the most affordable preamplifier in the Lamm product line.

The LL2.1 is an updated version of a previous model. Several new features have been added along with modifications of the basic circuit.


  • Design: Pure Class A Stereo Tube Preamplifier
  • Tube Compliment: Two 12AU7A, Two 6DJ8, One 6X4
  • Maximum Output Voltage: Typically 60 Volts RMS
  • MFR: 20 Hz - 20 kHz, ± 0 dB
  • THD+N: 0.03%
  • Inputs and Outputs: RCA Unbalanced
  • Input Impedance: 50 kOhms
  • Output Impedance: 250 Ohms
  • Input Sensitivity: 0.127 Volts (Produces Output of 1 Volt RMS)
  • S/N: < 84 dB below 2 Volts Output RMS
  • Dimensions: 4.5" H x 19" W x 13.9" D (The Handles Protrude an Additional 1.4")
  • Weight: 20 Pounds
  • MSRP: $5,990 USA (Deluxe Version), $5,690 (Standard Version)
  • Lamm Industries