My main reference cans are Stax 404LE running out of an SRD-7 and Adcom GFA-545ii and sometimes an SMSL SA50 If I want to move them somewhere. These are much nicer sounding than the new lambdas, and are uncharacteristically aggressive for Stax. Super fun and hard hitting.
Other cans are a modded LCD2C, modded CD900st, modded/driver swapped DT250 (at least, will be at some point), Stax 001mk2 (currently damaged), Koss HVX, Sennheiser HD425 600 ohm, Pioneer Monitor 10 and soon an isine 10. Those run out of Archel 2.5 Pro and Modius, which also serves as a preamp for the stax setup. I might have to terminate the 425 in banana plugs because those things are crazy insensitive and 600 ohms to boot.
For portable sources I've got a Fiio A5 and a Geekout 1000 when I'm at my laptop. I much prefer the Geekout as an amp, but it sadly can't be used with a phone due to its massive power draw. A5 is a pretty powerful and clean measuring amp, but sadly subjective impressions don't quite match up. It makes my cd900st sound unpleasant and sibilant even tho it gets loud. Planars run fine out of it however.