Concerning the impedance (20 Ohm), will the AK100 work fine with a pair of Grado SR225i headphones (impedance at 32Ohm)?
1788544
Yes. I've used it with multiple headphones of various impedance and it sounds great. If you really want it to sound even better, I use a headphone amp with it.
579660
I'm not sure, you may need to contact ibasso. I use mine with a Fiio Andes DAC and Shure 215 IEMs with no problem. I've also used it by itself with various headphones and never had a problem.
616620
They work fine. The impedance is 32 ohms or something. That's supposed to work okay with standard modern headphone jacks (like on a portable digital music player or laptop)
2142485
No amplification is needed unless the impedance is greater than 100 Ohms, but it can still be beneficial with a set above 30 Ohms. The K550's are rated near 40 Ohms as displayed here - > http://graphs.headphone.com/graphCompare.php?graphType=7&graphID;[]=3571&scale;=30
2046594
Hi, we recommend E12 to use with AKG 702. For Ip5s, you can use E17. Thanks,
938663
Yes- & the impedance will be fine, these are Awesome super tweeters & will extend your frequency response amazingly! they can sound a bit harsh, which I enjoy, But if you think they are a bit too loud you could add volume controls to them or add a different capacitor on the plus side of the input terminals (BI polar 2.2uf or so) - or just adjust the tone control of your amp/receiver! Well worth the price! great tweeters!
2134811
Excellent with a 32 ohms headphone like all Grado. Over that is always better to have a headphone amplifier.
2283804
I use it with my HE-500 and it is great. I don't get better sound from my headphones using anything else, including my Oppo 105 or my Integra receiver on my home theater.
737512
Yes, but the volume control in the device won't affect the level - the signal out through the dock is set at line level. The impedance is such that it will drive most headphones OK if you really have to do it this way. I'd be inclined to get the headphone jack fixed, though, for convenience.
1748923
Not the 250 ohm. If you want to use them with a phone, I'd suggest the 32 Ohm version; get the Limited Edition if you can find them, they are nice. But if you are using a phone as your primary source, and want something on par SQ wise and more portable, check out the Sennheiser HD25 or Amperior. Both are more easily driven, and more portable too, with a similar V-shaped response to the DT770. Their sound is less spacious, but I prefer them to the DT770 when both are driven by my Nexus 4 (same chipset as your optimus G).
1821166
My A4s are connected to a Sony AV receiver. The A4s are small but work well for me. Just a point of consideration: my Sony receiver has a power output of 6 Ohms while the A4 has a "Nominal Impedance" of 4 Ohms. According to Audioengine, "the P4s will work with 6 Ohms" (and they do).
725035
Yes it will, I have worn mine out and will be purchasing a new one very soon. Very good amp for the price and one of the better ones that I have used. The only thing I will warn you about when purchasing headphone amps is to make sure that you are getting one that works well with your headphones. Not all are the same and your more high end headphones require better amps. Get your specs and search for one that is right for your needs as this is not a one size fits all issue. Good luck and you will enjoy this purchase as its very flexible with many types of headphones. Have a great day!!
1174396
If the headphones are of decent quality, you dont have to worry. This amp should not have enough power to damage quality headphones. They work fine with my Momentum and AKGs fine
612543
Audio Technica ATH-AD900X impedance is just 38 Ohms so no, you dont need another amp to drive the headphones
112023
The the lower the ohms the MORE volume you have. So 24 ohms will be a bit louder than 32 ohms, you could a one time buy headphones with a 16 ohms. But now most headphones are 32 ohms. T. Smith has given you the wrong answer. Anyone else want to confirm this?
1373498
I'm not familiar with your earbuds. I'm using Grado 325i with the E17. I also use the E17 as a pre amp for my E9 at home for my Grado RS2i. I'm not sue pre that the E17 would have much effect with earbuds. You would have the advantage of digital to analog and you can adjust your treble and bass.
99930
Im not an expert, but if you are going to use these cans with your phone or any portable device, well then you will have no problems (you will not have enough power to blow them anyway).... but if you want to amp the sound you might have some difficulties. I red that Grado improved the Bass from the S60 model to the S60i model, the i version has a less precise bass, but it is more musical. but, keep in mind these cans are bass light.if you want to get more info check this webpage, the review section is great, and it may help you with other concerns. http://www.head-fi.org/products/grado-sr60i-headphones Im not an expert, but if you are going to use these cans with your phone or any portable device, well then you will have no problems (you will not have enough power to blow them anyway).... but if you want to amp the sound you might have some difficulties. I red that Grado improved the Bass from the S60 model to the S60i model, the i version has a less precise bass, but it is more musical. but, keep in mind these cans are bass light.if you want to get more info check this webpage, the review section is great, and it may help you with other concerns.... » Read More Im not an expert, but if you are going to use these cans with your phone or any portable device, well then you will have no problems (you will not have enough power to blow them anyway).... but if you want to amp the sound you might have some difficulties. I red that Grado improved the Bass from the S60 model to the S60i model, the i version has a less precise bass, but it is more musical. but, keep in mind these cans are bass light.if you want to get more info check this webpage, the review section is great, and it may help you with other concerns. http://www.head-fi.org/products/grado-sr60i-headphones « Show Less