I think I might end up keeping the Titanium HD but will probably switch out the Magni for something else. Does anyone have any alternative recommendations of a low impedance amp which sounds similar to the Magni and O2 and has both a headphone out and line out? I'm willing to pay up to 3x the price of the Magni which is about $300.
The Musical Fidelity Xcan V8 is a great match with the X1's Thats all I listen to now !!! The Beyerdynamic T1 with SPL Auditor sits gathering dust.
I did try the Matrix M stage Amp but it is more suited to the Senn HD650 in my opinion. Possibly the Musical Fidelity M1 HPA would be a good fit but that's more expensive.
MF Xcan v8's seem to be coming up more regularly on EBay in the UK now, so you might get one around your budget.
Don't forget to change the Cable!!! Can't speak too highly of the Toxic*Cable now fitted. Really detailed sound throughout the audio spectrum and no hardness in any aspect apart from where natural in the recording. A great fit for the X1's basic characteristics. You can hear right through to rest of the system and recording ,which can give its own problems if you have a weak link somewhere.
However I do find the X1's are still a little tight on my head/ears in comparison with some other phones but I am willing to put up with that for the pure enjoyment I am getting from the listening experience !!!