OK guys read and weep. Here it is: Mongrel Dog Audio capless SE Boz. That's right a Secpial Edition!!
My new Oppo BDP-83SE has input caps but my 6AS7 SET has no input caps. So make a preamp with no input caps but good output caps. In this capless SE version of BoZ I have no input caps but retained the 10uf polypropelene caps for the output. Also the output caps have been snubbed by 0.1uf polies.
Nelson suggests a total of 30,000uf for his B1 whose PS I stole a few ideas from. But only having 10,000uf caps I used three to get the filtering/storage up. Also I used a simple RCRCRC filter network. 1ohm/10,000uf/10ohm/10,000uf/1ohm/10,000uf. Each 10,000uf cap is snubbed. Silver plated wire wrap wire is used throughout. Input hookup wires and power wires were threaded through tiny bead chokes. Multiple earths (negative voltage) connections were made. Bitumanised Al foil laid in the top and bottom of the Hammond anodised Al case. Silver solder, Alps pot and 4oz brass added once more to a quality build.
Hard to judge sound quality at this point with only a brief listen. I will follow up. Not sure it can out "B1" the B1 but it does have stacks of gain. Huge sound stage - massive.
BoZSEFinishedss.jpghttp://mongreldogaudio.blogspot.com/201 ... e-boz.html