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.
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.
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).
M1.1 or M2.1 or ML2 or ML2.1