Hey everyone , For my first amp build I wanted to build @robrob 's micro deluxe. I decided to go with: - solid state rectifier - Hammond 269EX 190V-0-190V PT (I used the black 125V and not the grey 115V wire) As per Robs recommendation, I replaced the B+2 27K ohm 2 watt voltage dropping resistor with a 22K. I followed Rob's amp startup procedure and nothing exploded (I did wear safety goggles). The amp works but the maximum volume is quite low (Weber 12A125A). However, I seem to have some issues: 1. The measured voltages for B+1, B+2 as well as the plates seem low: PT out 208 & 207 (415 across) Heaters 6.9V B+1 266 B+2 222 V1A pin1 109 V1A pin3 1.6 V1B pin6 112 V1B pin8 1.6 V2 pin1/6 250 V2 pin3/8 9.8 2. I have a fairly loud hum that: - fairly certain its 60 cycle hum - is not affected by plugging in a guitar cable - as far as I can tell unchanged when I move wires around - However, the hum volume is dependent on the master volume (but the vol pot changes it sightly as well) I dont have spare tubes to test but a bad preamp tube could be the problem. Any idea what I could/should do about the hum & low voltages? I'd appreaciate any suggestions!