The rectification is solid-state with extensive filtering as described by John "Buddah" Camille.The Edison 60 Kit Amplifier with 300B's
This 300B Parallel Single Ended (PSE)
Amplifier is based upon the Edison 60 Amplifier Kit which is made in the UK. This modified Version
uses the PCB's from the Edison Kit with only minor changes. The biggest changes are in the PSU.
The driverstage is similar to that of the Audio-Note P4. The input valves found to sound best were old production Tesla E88CC (goldpin) and General Electric 6CG7 (think of it as a 6SN7 in a 9-pin bottle). In general there is nothing unusual about this Circuit.
The rectification is solid-state with extensive filtering as described by John "Buddah" Camille.
A pair of Svetlana SV300B valves per channel produce about 18 watts per channel. Heaters are all AC, the noise on the Output is around 2mV. The sound of the Edison Amplifier with 300B Output Valves in PSE zero feedback operation is more alive, more vibrant and dynamic than when using the EL34. The high range is sweeter and all in the Amplifier is consderably improved. Highly recommended.
The Edison Kit is available from:
Edison Original
103 South Street
Lancing BN15 8AS
England
voice +44 01903 750755
fax +44 01903 750756
http://www.hi-fidelity.co.uk/edison/
Below some more pictures:
