[YTCrazyTieGuy]

Hi,
 
I'm using the Music One which are very sensitive CIEMs (108 dB SPL @ 0.1 Vrms) with the Fiio Q1 DAC/Amp, and I hear a hiss that doesn't change with volume. Considering I almost never go over 3/10 volume using the low gain setting, I wondered if there was a way to attenuate the output without causing problems with the sound (specifically without increasing the "output impedance"). Is this possible?
 
Ideally this would be a volume pot, but I can settle for something like a constant -10 dB or something like that.
 
Thanks!

 

[jcx]

fixed attenuation is much easier than finding a POT/Rheostat that can handle the current
 
http://www.head-fi.org/t/198828/the-hissbuster-for-sensitive-headphones
 
the high class solution would be a output step down transformer - good ones for full audio bandwidth are near $50 ea, probably need to ask Jensen, Cinemag for a custom winding
 
the extreme solution would be multi-tapped quality audio transformer - again the few off the self products aren't sized for driving headphones, audiophile TVC boxes with bling connectors, switching may run to $k

 

[YTCrazyTieGuy]

The Hissbuster seems perfect!
 
Thanks!