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IEM amping - Page 2

post #16 of 18
Quote:
Originally Posted by autumnholy View Post

Then my perception is kinda wrong here. I thought that the lower the current the better the performance since I thought that's what the purpose of high impedance is there for, to reduce the current into the headphone drivers.


You do not want to be using an amp with high output impedance with a sensitive IEM or headphone. Especially one with cross overs. It will screw up the sound. Always opt for a portable amp with less than 1 ohm and a low noise floor. As I had said the UHA4 or UHA6 MKII will do this for you.

post #17 of 18
Quote:
Originally Posted by autumnholy View Post

 

SE535 is just a sensitive mistress...

 

BTW, where do you see the spec sheet which tells about the "90Hz/ 180Hz" hum?

Its not in the spec sheet, E7 was tested on a test bench which reviews a slight hum caused by E7's power supply. Actually low impedance design is much more commonly seen in studios these days since a lot of equipment have the output to support for low ohm phones.

post #18 of 18

I have a cozoy astrapi paired with my iPhone 6 with my Westone W50 or Campfire Audio Lyra. I noticed that there is a slight hissing sound whenever I plug my iems into the astrapi (high output?), but when I connect the etymotic 100ohm resistor adapter, I get a really nice buttery smooth sound with extended treble, am I doing it right? (I'm a skinny jean wearing, carry light, light load, form factor first, sound quality second, on the go, spotify app on extreme everything, not too serious audiophile)

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