Details：

Power supply requirement: Secondary voltage requirements AC230 ~ AC280v, greater than 30mA, 6.3V greater than 2A.

PCB size: 130x285mm

Tube model: SHUGUANG 12AX7 /JJ ECC83S *3

Note：

Diy Kit with capacitance : As the picture show ,it is a kit ，need buyer to solder it ,included all capacitance（not included 3pcs tubes）

Recommend transformer：https://www.ebay.co.uk/itm/273865971106

Assembled board ，just for reference：