TT 2 is kind of big though (tiny for what it is, but not a portable device). It must occupy a lot of that suitcase!
Last season I lugged around my Benchmark DAC2 as headphone amp on my travels in Asia for more than six months.
And since I also carry professional camera equipment that has to go through hand-luggage check in and security I once took the risk of putting my DAC2 and my HD800 in my suitcase on a flight from KK Malaysia to Singapore.
On arrival in Singapore my suitcase was missing.
Two days of worry, plus having to buy some clothes and stuff, and two extra taxi-trips to the airport to retrieve my suitcase which had been sent to Chengdung China for two days before I got it back again has once and for all, firmly taught me the lesson never to put anything really valuable in a suitcase ever again.
I was very lucky to get it back.
I would not recommend anyone even Rob to take such risks.
Apart from working on my own as a photographer I also work in the Tourism/Travel/Trade and luggage getting lost is unfortunately not an exception.
Insider tips watch the hilarious BBC series Come Fly with Me. It shows you a thing or two of what sometimes goes on behind closed doors at airports besides being very funny imho.
So unless the TT2 and M-scaler would basically be all you have in your handluggage I would not consider them as portable HIFI.
Cheers Controversial Christer