You guys need to be careful with the adaptor and 6SN7's as multiple owners on the PSA forum have had to send the unit back to the factory with board issues caused by this. Just because BHK's "personal" unit works fine with them doesn't mean the production units have the same exact parts or tolerances as his. So do it at your own risk. If you want a 6SN7 preamp their are plenty out there like the Sachs and the Supratek's.
