Do dedicates headphone amplifiers provide any considerable befits as compared to just sticking your headphones in the stereo amplifier jack. When using headphones what's the difference in using a headphone amp compared to a stereo amp? Thanks

HiFi man going all out, these should be interesting,

Finally got to audition these cans and they're amazing. Compared them with my sr125i and it was literally a day and night difference. no problem with comfort either.I need to get these now anyone selling theirs let me know 

Thanks that was really helpful i guess its similar to marketing peak watts to RMS watts. So what exactly do you look out in an amplifier to pair it with a headphone which is meaningful, guessing it would be the power output listed. Or would it just be the matter of trying it out and hearing what...

What happens when lets say you have an amp which has a frequency response of 20-20kHz jds c4and headphones are of different responses like 14-29kHz. gradops500 Would that amp not be suitable for the headphones since its only giving 20-20 range and headphones not driving those higher frequencies...

would the jds c421 be "good enough" to drive the he-500 ?

Bump 

would the ps500's go well with the amp JDS labs c421 using the AD8620 chip ? Thinking from upgrading from my sr125i with a few base mods 

So ive got a Grado SR 125i and ive done the hole punch mod. added 3 holes and feel like ive got some real good base nearly perfect amount. I also play the grados through a JDS labs C421 headphone amp. The base booste makes it sound real nice and the amp does definitely make a difference in the...

http://www.head-fi.org/t/615766/impression-jds-labs-c421-opa2227-vs-ad8620-featuring-cmoybb-o2-t5-and-uha-4 That ompaes the two chips. Never tried the OP I guess it all varies on what headphones you use and what the signature is already on those. The AD is ment to be more natural Ish or neutral...

Yeah I'm using the fiio line out on the I pad, it really does make a difference. How would you get a line out on devices which just have a headphone jack output like android phones ? Would using a double jack still be using the internal amp for those devices ?

Just got a used c421 from here for a first amp it's really good. Im using it with the grados however with something more power demanding i think this amp will do justice. there is no hiss at all. I guess the layout could have been different where the volume knowb is in the way with the headphone...

Whats a POS. so what would you use for equalising headphones. would that be just using the settings from a dedicated amp instead of tweaking softwares and setting everything to flat?

Equalizer app is really good. Ive used it on the i pad, really handy once you get to work around on how to use the curves. It can be tricky at times. the gain adjustment is good. user interface is similar to the i pod one you get to search and filter all songs. the only downside would be is that...

Equipped with a good recording mic, reel to reel can be real fun. I don't think it would be used for editing or so forth however having an antique and recording and playing instrumentals is really a pleasure. Have heard and recorded from Revox B77 and Akai gx747 dbx and they're just awesome. To...