I've bought both NOS/milspec -DR version & new production -PI from tubestore.com. While the -DR is better, the -PI sounds fine, particularly at $18. IMO there are better places to put money than into an $80 -DR.
You must have a verified phone number and physical address in order to post in the Audiogon Forums. Please return to Audiogon.com and complete this step. If you have any questions please contact Support.