LT02 Line Valve Preamplifier

LT02 Line Valve Preamplifier

The LT 02 is a line preamplifier in class A, that uses vacuum tube technology for stadiums signal . Uses two double triodes in SRPP configuration , which allows to obtain a low impedance for an easy driving of any final , as well as a reduced distortion despite the lack of feedback signal .

This configuration allows considerable electrical characteristics, with performance oozes quality three-dimensional , focusing, and sonic realism .

The inputs do not have capacitors on the signal path , are equipped with selector relays and cross- muting , to eliminate any noise from sources not in use.

To ensure the supply dynamics and speed anodic of the two channels are stabilized with a circuit type High Voltage NZOS © . The circuitry NZOS © Near Zero Output Supply of AudioPlus provides output impedance of the power stages extremely low, almost zero , and a wide bandwidth .

The power of the filaments , separate regulated , are equipped with warm-up timer for a slow rise of tension, to prevent electric shock.

The elegant and simple container , typical Italian design , is made ​​of light alloy and aluminum with a laser machining .

LT02 Functionality features

  • Stereo line valve preamplifier
  • 2 double triode valves E88CC/6922
  • High voltage NZOS© power supply circuit
  • Slow turn-on stabilized heaters voltages
  • 4 line inputs, 1 pair single ended RCA outputs
  • Front panel controls: source selector, volume, mute/operate, on/off
  • Remote volume control and mute
  • Auto mute turn-on circuit
  • Cross muting inputs relay switching
  • Audiophile quality volume control
  • High quality gold plated RCA jacks
  • High quality glass fiber circuit board
  • Ceramic gold plated pins tube sockets
  • MX Alloy chassis construction
  • Toroidal power transformer with very low external EMF
  • Detachable IEC power cable

LT02 Specifications

Circuit Topology Line tube preamplifier – 2 double triodes matched in SRPP configuration – High voltage NZOS©  power supply
Harmonic Distortion THD < 0.1 %
Input Sensitivity Min 220 mV for 98 db snr
S/N Ratio -98 dB ( A-weighted ) IEC268
Frequency 15 – 85 kHz +/- 2 dB
Inputs 4 stereo RCA
Input impedence 50 Kohm
Outputs 1 stereo RCA
Output Inpedance < 250 ohm
Output Voltage > 20 Vrms
Power Supply 115/230 VAC – 50/60 Hz – 50 VA
Dimensions (WxDxH) 440 mm x 300 mm x 105 mm
Weight (Net-Gross) 9 Kg – 10 Kg