Have listened to this for a couple of albums on my Woo Audio WA6 + Senn HD600, but in the end I prefer the Sophia. It's a great tube though, really clear. Bought new from Langrex a few years ago. It's a waste to let it sit in the cupboard though, so if someone's interested to roll this one, let me know. I'll ship it anywhere, at whatever is the best "economy" rate I can find (UPS probably), at cost for the buyer.