Dears.
I have used during long time differents power amps based on 300B SE or 300B PP. But 3 years ago I sold all 300B power amps and now I am using Allnic A-8000, this is SE version of KR T-1610 with 50W X Ch to drive my Tannoy Autograph Silver Monitors 15". Please note attached picture.
At this moment I do not have any 300B Amp, but still, have WE-300A and WE-300B collection. I have 8 pcs of WE-300A, 2 pcs of WE-300B engraved base + 2 pcs of 300B printed base dated 1947 with several WE-274B engraved base. So my idea is to have someday another power amp using 300B SE or PP. I have used during a long time several WE-91B replicas, but finally, I give up. WE-310 is not good valve for me. You have only a good midrange, the high freq Extention is not so flat, the definition of base is also complicated. I have used during some time Tango trans, but for my taste, Japanese Tango is a little dry, also I have used UK vintage Partridge, good mid-range, more liquid sound than Tango but not good high freq extension, etc... KR-1610 is a much more powerful, much more flat extension of high and low freq. But this is over-powerfull power amp for old vintage Tannoy... As I have valuable and rare 300A and 300B, I'd like to built or purchase the best possible power amp for these vales. Any suggestion??