LINLAI E-274B/E274B Hi-end Vacuum Tube Replace Psvane Shuguang WE274B Matched Pair

I have installed and played music with the new tubes. The bias are easy to adjust, very stable. The tubes sound very musical and better than what I had been using. I am impressed with the communication, seller sent photos of actual products before sending out the items. Very nice and safe packing.