Hi,
I owned a PSE HL1 for more than 8 years and after trying many other tubes I concluded that the standard Sovtek 6922's sounded the best. Bottom line, tube rolling with this preamp is a waste of time. I would look elsewhere in your system to affect the changes you seek like speaker placement, cables, etc..
Good Luck
I owned a PSE HL1 for more than 8 years and after trying many other tubes I concluded that the standard Sovtek 6922's sounded the best. Bottom line, tube rolling with this preamp is a waste of time. I would look elsewhere in your system to affect the changes you seek like speaker placement, cables, etc..
Good Luck