I see. I am currently running my Philips X2 without a dac and amp as of today, and will probably get the modi 2 uber and vali stack come January when I'm done with vacation. The thing is I also plan to get in on the next Fostex TH-X00 drop, which kinda makes me have to plan ahead. I listen to EDM only so maybe my taste preference will be different, and I MIGHT liek the tube sound with the Fostex next time, I dont know yet of course. When the time comes, I think I'll try the Fostex with the Vali 2 first, and if the sound is too tubby for me I'll just add a budget SS amp like an O2 to my setup. I guess I'll be posting my impressions with the Vali 2 here sometime in January.