Choosing parts for a build:

2  6EM7          $10.00    $ 20.00  Average eBay ($30 ea new)
1  6CA4          $15.00    $ 15.00  Rectifer
1  XPWR013-120   $53.68    $ 53.68  Power transformer
2  GXSE10-8-5k   $29.84    $ 59.68  Output transformers
1  Hammond 159P  $27.00    $ 27.00  L1 10H 125mA 155 ohm choke
2  Triad C-24X   $ 9.78    $ 19.58  L2 1H  250mA  50 ohm choke

Thinking about a separate PSU box. Outputs to amp:

• B+L +260V, GND
• B+R +260V, GND
• Heater AC, AC
• Chassis GND

Drawings:

• Layout (two 6x8 chassis): ​http://ohm.bu.edu/~hazen/TubeAmp/LAYOUT_VERT.pdf