The X-1 is a neutral sounding preamp and will not add the tube sound that you mention. The best preamp that I have heard with the X-250 was the Tom Evans Vibe (without the upgraded power supply), it smoked all the others that I tried (12 in total). I also would consider the new version of the H-Cat, as I hear it may be better then the Vibe but have not heard one myself.
Ferrari, I don't know where you heard that the Pass gear does not work with tube preamps, that is just plain wrong. I have used many with the X-250 and even the passive Sonic Euphoria preamp worked very well with the X-250.
Do a search this has been covered before.
Happy Listening.
Ferrari, I don't know where you heard that the Pass gear does not work with tube preamps, that is just plain wrong. I have used many with the X-250 and even the passive Sonic Euphoria preamp worked very well with the X-250.
Do a search this has been covered before.
Happy Listening.