[furyagain]

 
I just ordered a t50p headphones from Ebay,
anow i am thinking of getting a portable amp.
 
I do like ibasso 's product alot...
should i wait for the D12?
 
or get others?

 

[violinvirtuoso]

I don't know how the D12 will sound, but IMO, the D4 sounds better than the D10. But why would you need a DAC? If you are only using this on the go, I would get a seperate amp. Look into the Headstage Arrow, ALO Rx 2, TTVJ Slim, Pico Slim, Meier Stepdance, and so forth. Check this out:
 
http://www.head-fi.org/forum/thread/214588/review-portable-amp-roundup-54-portable-amps-reviewed-and-compared-last-update-8-17-10-added-meier-stepdance/2775
 
While Skylab's Review doesn't cover all amps (or all perspectives) it is an excellent starting (and possibly ending) point. It covers most popular amps with a (mostly) unbiased eye (and ear).

 

[ManAtWork]

According to your budget, I would suggest the Corda Stepdance. Another proved perfect match is the RSA P51 Mustang. No need to seek for other option, because most are not as synergy with T50p as these two options.
 

 

[debitsohn]

i emailed ibasso b4 the boomslang came out and they told me the toucan balanced is better than the d12. they didnt say anything about single ended. that d12 is interesting though.