I'm no longer interested in listening to the attitude, and the misinformation. Welcome to my blocked list.
lol. that's totally chill. My posts were all very polite and courteous suggestions and I kept a pretty open tolerant attitude towards different opinions. If you can't handle a nice discussion with someone who has a differing perspective without resorting to insults and blocking people... I am not sure how to respond. Calling someone ignorant because their opinion is different from yours is quite immature.
Not to be rude, but I find it interesting that you are saying so much about the HD650 when you have never even owned/demoed them, your headphone collection consists of sub-$100 cans, and you have never owned a pair of entry high-fi headphones near the sound quality level of the HD650. Also, interesting that you are suggesting that yoyo711 needs to spend more money on equipment when it doesn't look like you even have any experience of audio equipment outside of the entry-level budget sub-$100 gear. ...so I guess I am curious where you are getting all your opinions/suggestions from. It is generally frowned upon here on these forums for people to be throwing out suggestions and advice if your opinions are not based on any personal experience and you are just parroting what you've read elsewhere...
@yoyo711, Just a quick recap: the HD650 does
require an amp. An underpowered HD650 would sound worse than your HD555. If you do not want to use an amp, UmustBKidn is right, you should look at another pair of low impedance headphones. However, a decent amp can be easily be obtained within your budget of $130. There are many people who here who believe that high impedance headphones sound better with tube amps, but it's really just a matter of personal preference. An dac is not necessary, but it can change/improve the sound. Note just $40 greater than your $130 budget, Aune T1 tube dac/amp combo can adequately power the HD650 and give you that "tubey" sound. If you have the HD650 properly powered and are still unhappy with the sound, you need to switch to a different pair of headphones. The fundamental sound signature and sound quality of a pair of headphones does not change that dramatically through upgrading external equipment. There is nothing that beats personal experience, so if you have the chance, you should really go & try out different gear/headphones to see what your ears prefer. From what you've said, I think that the AKG K701/K702/Q701 would suit what you are looking for
good luck & I hope you find what you are looking for.