1 Pair Shuguang Natural Sound 12AU7-T Valve Vacuum Tubes Replace ECC82 12AU7

I had a stock PL 12au7 tube go bad after about 7 months of very heavy use. I absolutely loved the sound of my new PrimaLuna Evo 100 integrated amp with the stock PrimLuna tubes. I tried Gold Lion and Mullard reissue in the 12au7 slots, and it did sound good, but not as magical as the stock tubes. I found out that PrimaLuna tubes are rebranded Shuguang tubes from China. I couldn't find any new PrimaLuna tubes, not in stock, so I found these Shuguang 12au7-T matched tubes, and figured I'd give them a try. The magic is back, the PrimaLuna is sounding wonderfully magic again with better 3d soundstage and instrument separation.