2nd from bottom:
http://www.garage1217.com/garage1217_diy_tube_headphone_amplifiers_012.htm
Same place on eBay: https://www.ebay.com/itm/GARAGE1217-6SN7-TO-5670-396A-TUBE-SOCKET-ADAPTER-OUTSTANDING-BUILD-QUALITY/...
I have both CV-181Z and 6SN7, but I will run *6SN7* FIRST, to be sure things are smooth and steady.
Hole needs to be enlarged like I mentioned (7 posts above) for 6SN7 or run topless till you decide.
The hole would need to be larger yet for CV-181 obviously, if I do that, I’m machining it properly.
The E88CC, 6922, 6DJ8 family will poke through the stock size hole about a half inch or so above plate.
http://www.garage1217.com/garage1217_diy_tube_headphone_amplifiers_012.htm
Same place on eBay: https://www.ebay.com/itm/GARAGE1217-6SN7-TO-5670-396A-TUBE-SOCKET-ADAPTER-OUTSTANDING-BUILD-QUALITY/...
I have both CV-181Z and 6SN7, but I will run *6SN7* FIRST, to be sure things are smooth and steady.
Hole needs to be enlarged like I mentioned (7 posts above) for 6SN7 or run topless till you decide.
The hole would need to be larger yet for CV-181 obviously, if I do that, I’m machining it properly.
The E88CC, 6922, 6DJ8 family will poke through the stock size hole about a half inch or so above plate.