Pale Rider,
There's no question I have wanted a Taboo for time ago with my ERR's and now for headphones, specially now because of my interest in the LCD-2 and in few weeks an AKG K1000 is gonna be in the house. I ended up purchasing the big amp from Leben for a great price, the CS660P power amp. But I feel the little 15 Watts integrated is gonna be even better for me, needless to say to be able to have that amazing headphone out directly from the custom designed output transformers.
The discontinued CS300X with the vintage Mullards EL84 and General Electric 5751 and the current production of CS300XS with sovtek tubes are not in the same league.
But the dealer here in Spain sells the "XS" with the very good Genalex Gold Lion tubes for the same retail price, very good price indeed, 2500€ (around $3566). It is said that the result is not inferior to the "X" version with that setup.
Anyway, I have a contact with someone who has the "X" version almost brand new but he has Sonus Faber Electa Amator speakers, very inefficient in a small room. He likes to roll gear a lot and he has never found an amp to sound as good as this and specially in timbral accuracy. He said he couldn't believe that this 15W only drove his speakers and others of his friends so effortlessly and great, still not enough power for those inefficient speakers, but very good though. The anecdotic point is that he went one day at the hi-end audio shop and he was talking about getting a good speaker match with the Leben, so, other random guy at the shop heard the conversation and told him: "Hey! Do you own a Leben CS300X? I bet that you haven't ever listened to an amp to sound as good, have you?" Then the other said: "Well, I think so". (the anonymous guy owns a CS300X too)
He also is not into headphones so finally he is not going to keep the amp and he will sell it to me. He will sell his speakers for some with high sensitivity and buy the Leben Cs300 at 12W as the first option or any other low powered tube amp. I told him about Decware and all, but he prefers gear in which he can find where he lives as always, in Barcelona.
That situation is bit similar to what Decware philosophy is about, truly usable power.
So, at the end, it seems I'm gonna have the "X" version

. I'm still interested in Decware amps but, that is a task to be made in the future. Now I'm going to have my system around this amp and spend the money upgrading the rest of the equipment, not in Decware for now. But I'm insterested in the Trapeziums desktop speakers from Bob, and who knows, maybe I'd like to try the MG944's. I think these is gonna be well paired with the Leben.
If I like this amp more than the CSP2 and Phonitor I will sell them. Of course I'm gonna give away the CS660P. Just the source and the integrated amp for all the purposes sounds great.