Originally Posted by char0x
The se535s dont need an amp because they are so sensitive but they will definitely benifit. you dont need an e17 to drive them, the e7 , e11, e6, govibe mini box are all cheaper alternatives and will drive the se535s fine.
I'll address the easy one first - please explain exactly how they benefit? I'm an SE535 Special Edition owner with an iPhone4, and I'm genuinely intrigued by your comment. Please explain in detail - how they benefit from amping ......
Originally Posted by MorAase
I wonder - this Fiio 17
- isnt it overkill for my casual listing, on the sub on my way to work, when I m hospitalized or just walk the dog. Never use my headphones at home, havin an expensive hometheater ...
What other dac / amp should I look at. E7 ? iBasso products?
Do they need to be as expensive as Fiio 17?
I listen to beatles, dire straits, elton john and Gasoline.
OP - the 535s are an extremely easy to drive and very sensitive IEM. The biggest issue you may have would be audible hissing. The output impedance of the iPhone 5 seems to be ~ 3.8 ohms (quite a bit higher than my iPhone4 at just under 1 ohm). The Se535 have a 36 ohm impedance (@ 1kHz), and a sensitivity of 119 dB SPL/mW.
Basically you don't want to be using a source with an output impedance of higher than ~ 4.5 ohms.
So your iPhone 5 unamped should be fine. On my Iphone4, I can't go much higher than about 25% volume straight out of the iPhone jack without it getting painfully loud.
If you are getting plenty of volume from the 535s straight out of your iPhone with no audible hissing - then you are good to go.
Just for the record, I tried an E7, an E11, and even my current Arrow 4G with the 535s - and I am yet to notice an improvement over the H/O in the iPhone. All you get are hardware EQ's - and they can easily be performed via software instead by a decent parametric equaliser like the Equalizer app.
One of the problems you may have with using an amp is channel imbalance - because you'll need to have the amp so low in volume because of the sensitivity.
Originally Posted by randomkid
Those DACs won't work with the iPhone, so just get an amp. JDS Labs C5 would be your best bet
Quite correct - and from what I understand with the C5 is that the stepped attenuator will avoid the imbalance issues. So this would at least be a viable option if you are getting hissing (the C5 output impedance is significantly lower @ 2.2 ohms). However the E17 would still be an option with an even lower impedance (0.3 ohms) - you just wouldn't be using the DAC section. The E07K may be better still (cheaper but similar features) with same low output impedance.
But again OP - from my own experieince, I'm not really sure if you will see any gain by amping the 535s. I never use mine with an amp. The Arrow I have is only for use with my DT880, K701, and HD600.