Radu Tarta "Shiny Eyes" 45-C3M SET 2 watt amplifer. DHT design. Will provide extra pair of 45 NOS tubes (Philco&Cunningham) and C3M tubes.
From owner's manual:
Here is another audio gem. This is the "Shiny Eyes"
45-C3m SET DHT amplifier, built with care and to provide a rewarding sound.
This is an audiophile amplifier and it is not for everyone. It delivers up to
2W output. These 2W sound bigger than it shows. It is indeed a 2,000,000
microWatts. It is meant to be used with high sensitivity speakers. The amplifier
has one output through a high end Cardas
binding posts and one input using Vampire CM1FCB RCAs. The output transformers are Electra Print low
IMD and the interstage transformers
are Lundahl LL2762/16mA. The 45 tubes filaments power is supplied
through a Coleman regulator. Therefore there is a need to adjust the filaments
every time the tubes are replaced. A 5V
high quality Simpson meter is used for this purpose. The amp comes with a
manual where there are easy to follow instructions on how to adjust the
The power supply has a separate enclosure. The high voltage
uses a Sony/Tamura TC500 power transformer, Hammond filament transformers and
chokes and 6AX4 tube rectifiers. The setup is a choke input for a better
sounding amp. The high voltage delivered to the amp is measured and shown on a
nice Weston 500VDC panel meter. There are 3 raw, well filtered and regulated DC
supplies : two for the 45 filaments and the third for the C3m filaments. The
power is supplied to the main amp through a screened umbilical cord that
carries only DC. The connector is Amphenol military grade. This way the AC is
kept away from the main amp and the amplifier is dead quiet on my 96dB
All the components are high quality and audio grade. The 45
tubes sockets are high quality vintage NOS Amphenol and the C3m sockets are
original Siemens. The amplifier comes with all the tubes : NOS 6AX4 - 2 pieces,
pair of 45s test NOS Philco and pair of C3m NOS Lorentz.
The amplifier shows a dominant 2nd Harmonic that confers the
absolute astonishing sound of a DHT from that era. The frequency response is
better than 25-25KHz +/-1dB, the input sensitivity is 2.5 Vrms for maximum
output, and the input impedance is 50Kohms.
The enclosures are hand made using American cheery nicely
finish with 4 coats of Oil and Urethane, and sanded aluminum 1/8" top
This is a well built amp to last for a long time. I am very
fond of the sound of the 45 tube and therefore I've built a few 45 amps and
always pleased with the results.