You would like to think that if you build three of the samething one after another you would improve or tweak the build. Hopefully this would lead to a better sounding device. I found I had some very nice Sonel 680nf 630V caps and I used them for output caps. The Sonels I used have pure silver connecting wires. Also I fully snubbed the rec. bridge on the HT, employed a ceramic 9 pin tube socket and really neatened up the connecting wiring. Even the amp wiring improved on this build, shorter component lengths still with component-2-component wiring. WBT 5% Silver solder again.
This is the Matt Special: Rp=27K, Rc= 820ohms, Rg=10K. No cathode bypass cap, no output R (just the 100K pot) Cout=680nf (Solen). No feed back R. Let's see if it flys Matt!
I would like to offer this as a kit with all the components required (including tranni), a drilled chassis sprayed to the colour of desire.You supply the 24VAC wall wart and your own version of the free-hand wiring. This would suit the experienced DIYer not the beginer. I'd even throw in Golden Dragon tube.
Take a look at the cct. brd. This time I have bigger components on the same real-estate. All on the one cct. brd. Can't wait to hear this one. Also I have found another CONN 12AU7 made in the USA and tests 85%. These tubes are out of a very, very old Conn Organ. The last lot souned excellent and I gave them away with the preamp. I have about 6 of them. err... somewhere??
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