Hi guys quite new here.
I have been following this thread quite a bit but I thought it was about time I asked a few of my own questions.
I was wondering how can I tell if I need to use an amp or not for these headphones in the $200+ bracket (but not $400 or above)? I usually just have to try reading the reviews and see if madlust mentions about any amps but then it makes me ponder if I should still buy an amp even if he doesn't mention it in other particular reviews.
I'm thinking in particular, I'm interested in the AKG Q702 or variants thereof and also the Fidelio X1. Do I need an amp for any of the AKG Qxxx? How about the Fidelio X1?
I just feel like I don't really want to splash my money on an amp and would just prefer to directly input it into my soundcard.
Hi,
To identify whether to use an amp or not, well the best way is using your ears obviously. When you're underpowering a headphone, you can usually tell with the bass [either uncontrolled or weak] modrange [recessed or lacks dynamics] and treble [usually uncontrolled, uneven too bright].
A rule of thumb would be that any headphone with low impedance [less than 40 ohms] and high sensitivity [over 100db/mw] usually does not require an amp or rather, benefits little from it.
The X1 does not necessarily require a dedicated DAC/am[ and it "should" sound OK out of a soundcard [ideally external, higher quality].
On board audio is crap 99% of the time [unless the integrated soundcard is good, so no Realtek, etc.].
X1 will probably sound ok from a soundcard [perhaps even integrated but keep in mind that integrated soundcards are the worst source for headphones] or an MP3 player [tested with Clip+, sounded good IMO] but will scale a bit with dedicated gear.
Q701/K701/2/K612 [all sensitivity above 100 db/mw but impedance is 64 ohms and for K612 even 120 ohms, so...] is a no-no with on-board audio and scales a lot higher with dedicated gear [it is even a bit picky and depends on synergy to a point, but generally]. It sounded OK with a dedicated DAP [again the Clip+] but scales higher with its own DAC/amp.
For AKG a dedicated headphone amp/DAC [[Modi/Magni, E17/E9, Mstage, O2/ODAC, etc]] is a must IMO, or at leasta dedicated soundcard. It is not to be used with onboard audio.
X1 "should" perhaps be at least passable with an onboard soundcard but will also improve with a modest dedicated source or amplifier.
Whenever I tried an integrated soundcard [Realtek] with headphones or IEMs I was not impressed. Some were more passable than others [sensitive IEMs or headphones] but it was never optimal.