Starting with a design from Ari Polisois published on AudioExpress the 'Simplex'

a 6C33C-B  SE or Tube Single Ended Amplifier 2*18 watts of pure class A



I did use separated power supply's everywhere... specially the HV from John Broskie



Transfos 2*320 VA from SumR Toronto in two layers into one enclosure 



James OPT's and a digital display to measure every voltage and tube currents...

​

* Inferno -> it's hot like Hell !!