I have the Int-25 and find it to be a very smooth, never etched, but gives the right amount of bite when called upon (like Miles' muted trumpet). I've also had conversations with the folks at Pass labs regarding the sonic differences between the Int-250 and the Int-25. They agree that the midrange beauty of the Int-25 is special. However, the bigger amps are more extended on top and bottom. Tradeoffs.
