The Threshold of Excellence in Sound Reproduction

As the next generation of the original LL2 LAMM vacuum tube preamplifiers, a main distinction of the LL2.1 is its almost inaudible sonic signature. When connected to the right LAMM amplifiers, it recreates a three-dimensional soundstage in the comfort of your own home.

Design Elements

The LL2.1 features a topology that brings out the most natural sound performance in the audio path, employing a pure class A operation from input to output; all stages are single-ended. The preamplifier’s audibly neutral power supply features a full-wave vacuum rectifier. This rectifier, together with a choke-containing filter, helps reduce the hum and buzz to almost negligible levels and ensures a variety of dynamic range without coloration.  

Other features include 3 inputs; 1 tape loop; 2 sets of outputs; front panel muting switch; attenuator for gain reduction by 15 dB; built-in remote on/off for LAMM power amplifiers; protection circuitry coupled with automatic mute at turn on/off.

Components

Each preamplifier is hand-crafted with the highest quality materials, including military grade  low noise Dale metal film resistors; Noble potentiometers; Electrocube and Roederstein film capacitors; high frequency switching grade Cornell Dubilier electrolytic capacitors; and specially selected long life vacuum tubes. The LL2.1 features a custom-designed power transformer.

The LL2.1 is available in two versions: standard and deluxe, both of which utilize identical chassis, PC-board and parts.

In the deluxe version, the power supply energy storage is approximately twice that of the standard version (four identical light-blue capacitors next to the choke; only two of these are installed in the regular version — see first detail image insert).

Also, in the deluxe version, all film capacitors in critical pathways are situated next to polystyrene capacitors of the highest quality (see: yellow capacitors on two images — right and below).

Features

Unique topology

Brings out the most natural sound performance in the audio path

Standard and Deluxe models available

Deluxe model offers approximately twice the power supply energy storage as the Standard model. Additionally in the Deluxe model, all film capacitors in critical paths are paralleled by polystyrene capacitors of the highest available quality

Pure class A vacuum tube design

All stages are single-ended.

Drives any cable and any reasonable real world load

High-current drive capability, in combination with unique single-ended class A circuitry, allow the LL 2.1 to maintain its practically inaudible sonic signature.