What amp to use with Beyerdynamic DT-880?

Depends on the sound you want. The DT880's are a pretty neutral, dare-i-say "dry" headphone. So a tube amp would give more "tweakability", and potentially provide a lusher sound from them, which i would prefer.

dt880s sound very nice with headfive

These headphones have a sound that's extremely tolerant of just about amp or source you want to throw at it. You'll get good synergy with more devices with this headphone than any other I've tried.

Meier amps are well regarded here and work very nicely with the dt880.

I had some a while back and really dug them with my m^3. But as has been said, one of the great things about DT880s is their ability to sound pretty dang good out of almost anything.

They seem to work well with X-Can and Rega Ear so I would recommend testing both valve and ss amps.

Small home amp: Ear Max Pro - lush, rich, musical

Home/Hybrid: Rudistor RP6-DQ or RP7 Lite - spacious, textured, excellent imaging, fast

Home/Tube: Audiovalve RKV MkII + Eddie Current EC/DC - the best I've heard so far for the DT880-2005 - very rich, big/deep bass, great sound space dimension (width/depth/height), great impact/weight, excellent imaging, delicious musicality

Small portable (A): "M" Hornet - liquid, excellent extension without HF fatigue, deep/solid bass, extremely wide and open soundstage for a portable (beyond the ears) with excellent air and depth. Delicious vocals and smooth musicality, "natural" timbral presentation, with great bass impact that does not impinge on the mids or highs. The "M" mod brings it closer to the SR-71 (not the same), but with more speed and punch - and of course the 3-gain switch, AC adaptor and internal charging (NiMH 9V only - no lithiums). Heavenly with DT880-250, K701 and ES2 (silent & sweet - best choice for ES2).

[EDIT/ADD:] Small portable (B): Portaphile PV2^2-LT1210 Maxxed - perfect if you prefer a more detailed & textured sound, this amp has the most articulated/defined sound of any portable I've heard (best-defined bass & percussion instruments -- with clearest notes), with superb timbral nuance, inner detail, well-defined shape and position of instruments/performers, and also a wide soundstage with great dimension. The Hornet has bigger and slightly deeper bass and lusher mids, but the extra HF extension of this one gives more complex layering instead. If you like guitars, this presents the rich bite and juicy "jangle" of stringed instruments. Internal DIP-switchs for hi/lo gain, Class-A bias, etc.; AC adaptor option, no internal charging; can take the iPower 500mAh Lithium-Polymer 9V rechargeable (requires separate external charger). A dramatic and exciting sound. Dramatic & Textured w/K701, wide & extended with ES2, turns HD650/Equinox into a clean/clear/fast/crisp&detailed phone.

Large portable: Headroom Micro with Desktop Module - big soundstage, well-integrated frequency spectrum, "large" sound, slightly-but-not-overwhelmingly warm character, excellent but not migraine-inducing detail, smooth and musical.

I use a Woo Audio 3 most often but my '06 Micro w/ DM sounds very good with my '03 DT-880, using the crossfeed adds a nice warmth to them that works great for my tastes. The Micro also works that same magic on my DT-770.

DT880 + X-can v3 with Mullard tubes: absolutely wonderful.

MicroAMP + DT-880's are wonderfull. Really, I haven't heard about too many mismatches with the 880's.

I pair my DT880s with Xin's SM IV, and, with the bass boost and gain enabled, there is really excellent extension acroos the frequency spectrum, readily distinguishable instrument separation left and right and back and forward, and the sounsdtage is huge (but not as much as the K501s). Good pairing for me with classical music and jazz.

Edit/Expansion and Addition

I edited my post regarding portable amps. Here it is, to save looking back:

Small portable (A): "M" Hornet - liquid, excellent extension without HF fatigue, deep/solid bass, extremely wide and open soundstage for a portable (beyond the ears) with excellent air and depth. Delicious vocals and smooth musicality, "natural" timbral presentation, with great bass impact that does not impinge on the mids or highs. The "M" mod brings it closer to the SR-71 (not the same), but with more speed and punch - and of course the 3-gain switch, AC adaptor and internal charging (NiMH 9V only - no lithiums). Heavenly with DT880-250, K701 and ES2 (silent & sweet - best choice for ES2).

[EDIT/ADD:] Small portable (B): Portaphile PV2^2-LT1210 Maxxed - perfect if you prefer a more detailed & textured sound, this amp has the most articulated/defined sound of any portable I've heard (best-defined bass & percussion instruments -- with clearest notes), with superb timbral nuance, inner detail, well-defined shape and position of instruments/performers, and also a wide soundstage with great dimension. The Hornet has bigger and slightly deeper bass and lusher mids, but the extra HF extension of this one gives more complex layering instead. If you like guitars, this presents the rich bite and juicy "jangle" of stringed instruments. Internal DIP-switchs for hi/lo gain, Class-A bias, etc.; AC adaptor option, no internal charging; can take the iPower 500mAh Lithium-Polymer 9V rechargeable (requires separate external charger). A dramatic and exciting sound. Dramatic & Textured w/K701, wide & extended with ES2, turns HD650/Equinox into a clean/clear/fast/crisp&detailed phone.