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December 26, 2006



The ML3 Signature Power Amplifier
LAMM INDUSTRIES, INC. is proud to introduce its crowning achievement, the ML3 Signature power amplifier. The ML3 is a single-ended amplifier with a separate power supply utilizing a very powerful direct-heated triode GM70 (plate dissipation 125W).

The ML3 continues the fine tradition that began with the Lamm ML2 single-ended amplifier, and takes it to unimagined heights of performance attainable only now.

The ML3, along with the renowned Model ML2.1 amplifier, is practically the only single-ended amplifier on the market capable of reproducing the entire range of audio frequencies. The ML3’s midrange is beautifully rendered, along with a natural and extended bass, and unparalleled high frequency reproduction, up to now only available in our ML2, ML2.1, and ML3 models.

The ML3’s innovative circuitry enables a recreation of the original spectral balance and harmonic structure of the recorded material without loosing a strand of low-level detail or nuance. Another unique aspect of the design enables the ML3 to recreate a three-dimensional soundstage without boundaries or limitations, while maintaining an extraordinary transparency of perceived sound. The ML3 truly demonstrates what a properly designed single-ended amplifier can do.



Technical Aspects in Brief
The ML3 is a 32 Watt, no overall feedback pure class-A single-ended amplifier. It’s built on one of the most sophisticated power supplies ever used in audio, and its most prominent features are:

• Separate plate and filament transformers
• Six filter chokes
• Six rectifier tubes
• Highest quality film capacitors used in high-voltage power supply feeding the output stage
• Refined soft-start and delay circuits
• Option for turning the amp on/off controlled via Lamm preamplifiers

While the ML3 has no overall loop feedback, the amplifier features an option allowing the user to introduce small amounts of local feedback in the output stage. You can choose between two levels of feedback: NFB1 and NFB2, which differ in their levels. This allows for three feedback options: No feedback, NFB1 or NFB2.



A multi-turn trimming potentiometer, accessible through a special opening in the amplifier’s chassis, along with a set of test points, allow the user to adjust and measure the plate current of the output tube via an external voltmeter.



Absolutely unique custom-made output transformers, along with our unique output stage and sophisticated power supply, allow the ML3 to drive most real-world speakers yielding tremendous sonic impact and stability under the most dynamic conditions. Although the ML3 can drive most speakers, their full potential is best realized with high-efficiency speakers of 92dB and higher.



The design goal of the ML3 was to use best modern technology and processes in a style reminiscent of equipment from the golden age of vacuum tubes. Each amplifier is carefully constructed and handcrafted of the finest materials and world-class parts, some of which include military-graded DALE metal film resistors, PRC wirewound resistors, CADDOCK power film resistors; BOURNS multi-turn potentiometers; CORNELL DUBILIER and UNITED CHEMI-CON electrolytic capacitors, ELECTROCUBE, ROEDERSTEIN and ELCON film capacitors; HAMMOND chokes; gold-plated NEUTRIC and FISCHER connectors; military-graded low-noise long-life vacuum tubes.



Special attention was given to designing the plate and filament transformers that have no mechanical contact with either the transformer cover or the chassis, and are suspended in a special encapsulant that almost completely absorbs even residual mechanical vibrations. This plays a significant role in assuring absolutely unique clarity and micro-resolution.



Tube Complement:

• One 12AX7/ECC83
• Four 6N30P-DR
• One GM70
• Six 12AX3/12BE3

The ML3 is designed to function on AC line voltages throughout the world -- 100/120/220/230/240 V -- and can be internally adjusted without elaborate modifications.

Suggested retail price (preliminary): $126,290.00/pair

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