Try a better quality amp or at least a lyr..the he500 needs a good (strong) amp to sound good..as all planars need..and to be honest..the 02 doesnt pair well withthe he500..better try the emotiva and drive it from the speaker leads..much much much better and just as cheap...or do what i did..score urself a strong tube amp..u wont regret it..only ur wallet will.. .imho ofcourse...and throw away that horrible standard hifiman silverplated copper cable and buy urself a decent copper cable (doesnt need to be expensive..a toxic cables scorpion is cheap and very good).am sure that u then will love the sound..if not..sell the he500 and get urself an audeze lcd.as that one is much darker in soundsignature..so maybe more suited for ur tastes..but then again..u still have to invest in good amping also..
ps..just 20 hours burn in time??? The he500 needs at least 100 hours non stop..mine did..
Interestingly enough, although my HD650 improves noticeably with the Magni, it's not the dramatic improvement that it provides with the HE-500. The O2 is just fine for the HD650 and it 'de-thickens' it compared to the E9 (I have to agree with a certain head-fier here that the E9 is a slightly warm amp). The Magni bests the E9 and the O2 even for the HD650, however not as incontrovertibly as it does for the HE-500. I could even see how some would prefer the O2 for the HD650 if they were looking to mitigate some HD650 weaknesses by thinning out the sound and adding air. I know the O2 is supposed to be transparent and my comparisons can only be made regarding the amps and headphones I own.
Lastly, the Magni has erased the 'lack of engagement with the music' that had plagued me with the HE-500 - they are now more engaging than the HD650. Considering that the HD650 is considered a laid back headphone, it speaks to my insufficient amping that the HE-500 was LESS engaging with the E9 and O2. With the Magni, I'm actually dancing with the music, albeit very carefully. I'd hate to have the HE-500 fall off my head and break my foot!
Edited by disastermouse - 2/28/13 at 9:24am