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

Note：

This is pcb ，not included any parts ！

Recommend tube：

https://www.ebay.co.uk/itm/274421828457

the price of 3pcs CZ ECC83 tubes ：78EUR

Recommend transformer：

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

Assembled Board ，just for reference：