LECTOR ZOE excellent stereo tube preamplifier. great sound. tube rollers dream. throwing in extra tubes for you to try - 4 pairs of various types.
from the manufacturers site:
Stereo tube line preamplifier with two double triode in class A
introduces the all new ZOE (Zero Ohm Energy) tube line preamplifier featuring an
innovative power supply based on a parallel/shunt voltage regulator circuit. No
active devices in series with the power supply path, just passive components as
premium quality resistors provide the voltage drop while an active device -
wired in parallel - sink current in order to keep a stable output voltage.
This new concept
offers a virtual zero ohm energy output to the tubes without relying on huge
amount of negative feedback – in fact it’s a zero feedback design. The
result is remarkable performance without the typical effect on overall sound
quality imposed by series or pass regulators often plagued with high impedance
output and/or strong negative feedback.
Despite its simple
basic operation and clear advantages over series regulators, parallel/shunt
voltage regulators are totally uncommon in audio applications at any price
levels. Simplicity sometime is challenging and not that easy to achieve. A shunt
regulator runs hot: it requires bigger transformers and huge heat sinks as if it
were a class A amplifier – and in fact it is!
The preamplifier gain
stage is an all-tube, class A design. Thanks to SATC (Self Adjusting Tube Circuitry), the new ZOE
can also use a wide range of twin triodes – such as 12AT7/12AU7/6CG7/12BH7/ECC802S to suite end users’ taste.
And swapping different
tubes has never been easier. A large plexiglas trim on the top can be removed
simply undoing four screws allowing you to change the tubes without removing the
whole lid. Another small window on front panel lets you see-trough while the
internal circuitry is back-lit during operational mode.
The ZOE has five line
inputs, mute/operation switch, auto-delay, remote controlled volume, two sets of
main outputs, tape outputs and home theatre direct outputs that bypass the whole
preamplifier circuitry when the unit is switched off. This feature is
particularly useful in complex home theatre installations and allows you to send
the selected source signals to an external multichannel processor.
delivers pure enjoyment: thanks to the new shunt regulator we have virtually
cancelled any trace of the power supply added sound. What you listen is just the
sound of your favourite tubes operating with exceptional linearity in a class A
rating at 8 on audiogon scale - see photos. with original box, packing materials and remote.
including 4 pairs of various preamp tubes!
$45 to ship via UPS or FedEx to continental U.S. addresses.
please contact me with questions. thanks for looking,