If you're here looking for this, you know what it is and what it does.
Price for bare PCB, not including and valve sockets, components or installation.

NOTE: No support will be provided. This is an item intended for experienced technicians or to be purchased in combination with a repair job only.

Specifications:

• 2oz copper (double sided for trace and clearance optimisation)
• Through plated holes
• 1.6mm thick TG 150-160 FR4 substrate
• Improved heater traces for lower hum (double sided PCB)
• Cathode current sense resistors with test points for checking bias -use 2 x 1w, 1%, 1ohm resistors, or wire link if not desired (neither included)
• Isolation slots between pads to prevent arcing.