Details ：

The original machine is directly engraved British music aristocrats AN original machine circuit parameters . can be used in most of the tube preamplifier tube amp discharge tube amp amplifier voltage amplification push level. Filament voltage 12.6v and 6.3v or direct heat Tube 5v 4v 2.7v ( need change the voltage regulator ic ) PSU board PCB Size:122x133mm Input voltage: 300V-0-300V 0-AC6.3V 0-AC13.6V Output voltage: DC250V-300V (Adjustable) DC12V ( can adjust this voltage by change the voltage regulator ic) Using Tube: ECL82 and 6X5 （6X5GT） Suitable transformer ：https://www.ebay.com/itm/354096952915

Note：

Bare PCB:only one pcb ，not included other parts！ Diy kit ：all parts need buyer to solder it ，not included tubes ！ Assembled Board：have tested it well ！not included tubes ！