It wasn't warm like tubes or limp solid state - it was more of a fast, powerful, solid presentation but really wide open sounding. Have you ever driven an AMG mercedes? I have warm speakers at home (ProAc), so a very warm sound would be bad. The best way I can think of to describe it is incredibly clean, like I could hear through the entire system to the LP itself, like there was nothing in the way.
Individual images had a very solid body and it wasn't wispy or anemic or "lightweight" sounding in the way you sometimes get with hyper-detailed systems. Tonally, it was the most neutral system I've heard in a long time, completely different from what I have at home. The frequency range and the overall tonal balance was natural. I could identify every instrument and none of the voices sounded chesty or congested. When I think of tonal problems, I always think of hi-hat cymbals sounding like little bursts of white noise and here they didn't. There was a guy there when I arrived who was listening to piano recordings and identifying the make of the piano in different recordings!