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Power amplifiers

M1.2 Reference       description  specs

M2.2      description  specs

ML1.1      description  specs

ML2.1      description  specs

Preamplifiers

LL2 (regular/deluxe)      description  specs

L2 Reference      description  specs

LP2 (regular/deluxe)                 phono preamp      description  specs

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  HYBRID POWER AMPLIFIER

 

photography courtesy Mario Rodriguez

Lamm's 10th anniversary
Release of two products marks the occasion: 
model M1.2 Reference and  model M2.2  
click here for more information

Model M1.2 Reference represents top of the line in LAMM hybrid and solid-state audio equipment.  Power amplifier model M1.2 Reference is a pinnacle of its designer’s professional career -- a result of years of intensive research directed at attaining the most accurate reproduction of recorded music.  Unique topology and application of the most advanced technological resources and processes bring the M1.2 Reference to a threshold of excellence in sound reproduction.  A distinctive feature of the M1.2 Reference is its presentation of the extraordinary transparency of perceived sound which in turn assures the recreation of a three dimensional soundstage in the home, recording studio, etc. without boundaries and limitations.

The M1.2 Reference is a masterful blend of design and engineering simplicity. It is a pure class A amplifier featuring high-speed MOS-FET transistors in the output stage with no overall feedback and special switch-selectable bias/voltage settings for 8- or 4-Ohm operation.  The bias setting switch assures the pure class A operation of the M1.2 Reference when matched with a speaker load of either 4 or 8 Ohms, whereas conventional class A designs double the power into 4 Ohms resulting in one fourth of the doubled power in class A and the rest in class AB (learn more about this in FAQ section of our website at www.lammindustries.com/faq/switch.html).  The M1.2 Reference is a hybrid design with one specially selected 6922 vacuum triode in the second stage. 

The M1.2 Reference is conservatively rated to deliver 110 Watts into 8 and 4 Ohms in pure class A operation (high and low impedance settings, respectively); 220 Watts into 2 Ohms, and 400 Watts into 1 Ohm (low impedance setting), continuous.  The M1.2 Reference can drive any known speaker.  The harmonic structure remains intact regardless of the speaker load, while the extreme clarity is maintained at all power levels. 

Each amplifier is carefully constructed and hand-crafted with the finest materials and parts currently available, some of which include military graded low noise DALE metal film resistors; PRC wire wound resistors; ELECTROCUBE and ROEDERSTEIN film capacitors; high frequency switching grade CORNELL DUBILIER electrolytic capacitors; BOURNS multi-turn potentiometers; HAMMOND filter chokes; military graded low noise long life vacuum tubes; high quality heavy duty gold-plated binding posts and RCA jacks; gold-plated NEUTRIC XLR connectors, and CAMAC-type coaxial connectors from FISCHER.  Special attention was given to designing the toroidal power transformer, which has no mechanical contact with either the transformer cover or the chassis and is suspended in a special encapsulant that almost completely absorbs even the residual mechanical vibrations.  This plays a significant role in assuring the absolutely unique clarity and micro-resolution during sound reproduction.

The M1.2 Reference works on all world AC line voltages without elaborate modification.

U.S. Patent No. D368,261; U.S. Patent No. 5,470,795; other patents pending.