LINE
LEVEL TUBE PREAMPLIFIER
The monaural line level
preamplifier model LL1 Signature is the ultimate statement of
perfection in High-End audio. Just like ML3 Signature is the best creation of its designer's professional career among the
LAMM amplifiers, so is the LL1 Signature among the line level
LAMM preamplifiers.
The LL1 Signature has
been designed to complement the ML3 Signature amplifier, and
this combination in a system represents a "match made in
heaven". However, the LL1 Signature will perform magic
with any other appropriate power amplifier.
The LL1 Signature features a topology that brings out the most natural sound
performance in the audio path. In principle, it is a single-stage
unit that basically represents the shortest possible signal path.
The preamplifier
contains four very linear low impedance triodes paralleled into a
single inverting gain stage.
The LL1 Signature employs a pure single-ended class A operation, with no overall
feedback applied. Also featured are specially selected high-transconductance
dual triodes 6N30P-DR/ 6Н30П-ДР (original)
in the signal path and TKD stepped potentiometers for volume control
- the best available on today's market.
The preamplifier's
audibly neutral power supply features a full-wave vacuum
rectifier. This rectifier, together with a choke-containing
filter, allows to practically get rid of the hum and buzz and, in
the end, to ensure the verity of dynamic range without
coloration. Two solid-state analog voltage regulators supply
dc voltage to the tube filaments (heaters).
Other features include 3
inputs, one tape/HT processor loop, attenuator (-12 dB) switch,
output 1/output 2 switches, protection circuitry designed to enable
manual muting of the output signal, and built-in remote on/off for
LAMM power amplifiers.
The main distinction of
the LL1 Signature from any other comparable type of
preamplifiers is its practically inaudible sonic signature.
When connected to an appropriate type of power amplifiers,
especially LAMM power amplifiers, it assures the extraordinary
transparency of perceived sound and recreation of a
three-dimensional soundstage in the home, recording studio, etc.,
without boundaries and limitations.
Each preamplifier is
handcrafted of the finest materials and top quality parts like
military-grade DALE metal-film resistors, PRC wire-wound resistors,
BOURNS multi-turn potentiometers, CORNELL DUBILIER and UNITED
CHEMI-CON electrolytic capacitors, ELECTROCUBE, ELCON and
ROEDERSTEIN film capacitors; HAMMOND chokes, gold-plated NEUTRIC
connectors, and military-grade low-noise long-life vacuum tubes.
A custom-designed
massive damping panel installed in the preamplifier unit
significantly reduces all types of mechanical vibrations which, in
turn, leads to a more extended, coherent and natural bass
reproduction.
The LL1 Signature features a custom-designed super-low noise power transformer.
The LL1 Signature works on all world AC line voltages (100/120/220/230/240V).
LP1 Signature
