Have to write this before i forget, the 120Ω adapter makes the DT48 sound wider and not so narrow. The Objective2 doesn't need the adapter to widen up the DT48.
I was switching between amps with my DT48A and forgot to use the 120Ω adapter and it sounded closed in, lol. Got back on track again with the adapter. And yes it works with the DT48E @25 Ω too, the E will sound similar to the DT48 @5Ω using that adapter with a more balanced sound, less forward but retaining the luscious mids, in this way the bass and highs have more presence. Or as EYedrop had mentioned, made them smoother(balanced, wider, with more transparency and instrument separation) and less shoutey (less forward mids).
Edited by maniacal71 - 4/7/12 at 12:59pm