From their web site or through eBay?
Like the output is very colored with tubes (generally). An example is a song might have very high, bright trumpets playing, lots of guitar going on, some bass, and then it goes through a tube amp and it might come out sounding slower, deeper/more bass, more relaxed, less high notes. That's really just a description of warmth and not all tubes are like that but the idea is that tubes color the sound greatly through that kind of distortion. I've heard the distortion also called "harmonic distortion" and I don't know what that is or how to describe it so I didn't as to not confuse you, but read up and ask around for info about that. This might be a good time for someone more experienced with the technicalities of tubes to jump in! ;)
But basically solid state amps tend to lean towards neutral and tubes tend to lean towards a colored sound.
But there are exceptions, some tubes may be quite neutral, I wouldn't know, and I know there are some solid state amps that are built to have a colored sound (I think Schiit solid state amps and Violectric V200 are from what I've read)
Not Violectric, they're as neutral and flat as a board.
thinking about pulling the trigger on my first tube, the bottlehead crack really sounds like something to be heard with my 650's
is there that much of difference regarding harmonic distortion between the valhala.
From what i've heard, the valhalla actually sounds somewhat like a ss.
Oh, I thought I remembered seeing that in a comparison to the SPL Auditor somewhere.