Hi guys. I have 3 pairs of JJ Electronics E88CC. And each one sounds different. Stock plain JJ's are great overall, but with a less resolution. Gold-pin's have great resolution, but with specific darker mids presentation (interesting though) and boosted low bass. And third plain JJ's are too rough-sounding, too edgy on bass and mids, just not musical enough. I bought them from vivatubes and another ebay seller. And here is my question. Is it okay? It looks like russian roulette to find the same sounding tube. I like stock JJ's, and just want to buy a replacement for them. Also tried Genalex Lion, Tesla E88CC, but they're not my cup of tea either. Anyway Gold Pin JJ's are good enough to enjoy the music.