This is one piece of universal prototyping board using high quality FR4 and many PTHs (plated through holes). The board can cater for :
This circuit board is designed as a dual-purpose tube sockets, capable of accommodating either small 7-pin or small 9-pin tubes. It can fit nine small 9-pin tube sockets or nine small 7-pin tube sockets. It is suitable for various small 7-pin and small 9-pin tube applications, including pre-amp, post-amp, single-ended, and push-pull circuits.
PCB dimension: 20cm x 15cm. PCB thickness 2mm
