Owner`s manual

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Introduction
• The design is the result of more then 100 different hand built preamp
circuits dating back to the 1970s.
• All amplification is accomplished with the SRPP (push pull) configuration
for the best possible linearity, lowest noise and distortion.
• No solid-state devices are placed in the signal path and a tube is used for
the high voltage rectifier.
• The power supply is very different and contributes to the high
performance. There are no regulated power supplies. Each tube stage is
powered by a separate storage capacitor that acts like a battery. These
storage capacitors are very large (10 to 20 time’s oversize). The power
supply simply holds the voltage across the capacitors like a “trickle
charger”. PC board layout is “Dual Mono”. The channels are located on
opposite sides of the circuit board in near mirror image with dual triodes in
a row down the center.
• The first stage has no NFB to interact with the cartridge. The second and
third stages are enclosed in a single feedback loop incorporating both
positive and negative feedback.
• The RIAA network is divided into two sections, one passive and one
active. The upper half (above 1KZ) is accomplished with a passive
network between stage one and two. The lower half (below 1KZ) is
accomplished with an active network around stage two and three.