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TRIODE HI-FI & RELATED TOPICS, MOTORCYCLES AND STEAM POWER.

Hello, I'm an expatriate Brit, now naturalised American living in North Carolina, USA.  I left the UK  when I was offered a job here.  I have tried to make the project presentations both informative and useful.  I hope you not only enjoy browsing my pages but find something helpful.  Please pass my URL to anyone whom you feel might be interested, Thanks.

TUBE AUDIO UPDATES:

To get to these click on TUBE AUDIO navigation button then go to the appropriate section.

Update to SACD Player (Pioneer DV563A) Mod's, I got inspired and updated this to use a CCS to balance the signal current in each cathode follower pair, thereby minimising signal current interaction with the B+ supplies(s).  I have deleted the B+ voltage regulator and separated the supplies for each channel.  Nov 08, corrected schematic error.

6AS7 Push-Pull Redesign, Mullard input stage combined with 'power long-tailed pair' output stages. May 06 Schematic added. June 06, AudioXpress article added.

New Hybrid Phono-Stage, 60dB from two stages, no input transformer.

Major update to power supply article, limitations of passive power supplies, explanation of series and shunt regulation, advantages and limitations, examples.

Update to 300B SE, I replaced the output stage grid resistor (5842) with a choke and reworked the bias networks to permit operation with 50s.  The 300B is a good sounding tube until you have experienced 50s!

Update to MK11 Planar Triode Phono Stage, I replaced the output stage grid resistor (5842) with a choke to ensure DC stability at high current.

Just a Thought:

"Dear God.  I pray to remain centered in your love and free of fear so that I may have the strength to do those things that I know I should and to behave as I know I should.  I pray that all sentient beings be filled with loving kindness and that all sentient beings be at peace.  Amen "