LAMM LP2.1 is the original model LP2(The first LAMM phono amplifier)The next generation of products.
LP2.1 function upgrade and improvement compared with LP2:
Many of the technical solutions introduced are implemented in the LP1 signature(Just like the ML2.2 single-ended power amplifier, many of its technical solutions are derived from the power amplifier ML3.)
New tubes used: 6C3P and 6C45P-E(The same tube is used for the LP1 signature phono preamp), And made corresponding adjustments on the circuit;
Significantly reduced output impedance
Because of LP2, new parts provided by different manufacturers have been introduced
Adopted new printed circuit board material
Super low noise power transformer is used
LP2.1 is composed of a dual mono vacuum tube phono preamplifier and two electromechanical separation channels. The characteristics of the sound present the most natural sound through the elegant and complex designed audio path.
The preamplifier is in pure Class A operation mode from input to output. The high-current drive capability, combined with the unique single-ended Class A circuit, enables the preamplifier to drive any wire and any reasonable load in the real world, while maintaining its almost inaudible sound color. When connected to appropriate types of electronic products, especially LAMM amplifiers, it guarantees extraordinary transparency and reproduces a three-dimensional music scene at home, with no boundaries and restrictions on the scale of the sound field.
All amplifier stages use high-transconductance, very low-noise high-current vacuum transistors, and do not use loop feedback.
The LP2.1 feature is a very accurate passive RIAA EQ circuit. The preamplifier power supply adopts the full-wave rectification of the vacuum tube with neutral sound characteristics, together with the choke-containing filter, which helps to reduce the hum, which almost reaches a negligible level, and finally ensures the authenticity of the dynamic range and No staining. The solid-state analog voltage regulator is supplied as a heater. Other features include two sets of input channels and gain/selector switch and MC input.
A unique electronic protection circuit to maintain the stability of LP2.1, it will also automatically weaken the preamplifier to prevent the AC voltage drop or interruption to disconnect the circuit.
Each preamplifier uses the highest quality components carefully selected by hand, including the highest-grade low-noise Dell metal film resistors; 1% tolerance RCD wirewound resistors; ELECTROCUBE and Vishay/ROEDERSTEIN film capacitors; high-frequency switching level Cornell Electrolytic Capacitor; Fisher“Camac”Connector; specially selected first-class low-noise long-life vacuum tube; and a specially designed super low-noise power transformer
LP2.1 is especially effective as a reference device for large-scale speaker systems, and can reproduce the unique qualities of LP records. LP2.1 is intended to be used as part of a truly advanced audio system, capable of duplicating recording studios——Or a concert hall where live music events are close to reality. It is also designed to control the recording process and the quality characteristics of the LP record itself as a reference preamplifier in the recording studio.
LP2.1 has two versions to choose from: Standard Edition and Deluxe Edition. The deluxe version of the power supply stores more energy, all signal paths bypass the polystyrene capacitor film capacitor, with the highest signal transmission quality, a specially designed large damping plate significantly reduces all types of mechanical vibration, and in turn, Reproduce an extended, coherent and natural bass.
The working range of LP2.1 AC voltage can adapt to all specifications in the world.