[st5150]

How many ohms is considered low impedence?

 

[Duncan]

Quote:

Originally Posted by st5150 How many ohms is considered low impedence?

I've said this before, and will say it again because it is valid imo...

...It is NOT the impedance that creates the hiss, it is the extreme sensitivity that IEMs offer compared to more 'standard' headphones that creates the hiss...

Case in point, the Shure E5C, impedance is 110ohm (which is relatively high), sensitivity is 122db/mw (very high) and with the 4G and 5G ipod there is constant static / hiss...

...That is eliminated (so long as you don't use over half volume, and even if you do, it is almost muted) with using Apples 'Radio Remote', as this uses an external DAC which tidies things up (and makes the music sound better anyway, so its kind of a no-brainer

)

 

[AudioNoob]

sorry for misphrasing,
btw, is the radio remote really that good?

 

[CookieFactory]

Quote:

Originally Posted by AudioNoob checked a 5g ipod with er4p today, no hiss while not playing, res tI couldnt tell if it was the record or not

The 5G iPod does hiss with the ER4P, but just barely. The hiss is so low that it would be deemed non-existent by all but the most anal-retentive (guilty).

I bought the Apple Radio Remote because I read it has better sound quality and reduces hiss. I got mine, plugged it in for 5 minutes and noticed no reduction in hiss (using ER4P and E4c) and was a bit put off by the cord length. Sold it here a few minutes later.

 

[Duncan]

Quote:

Originally Posted by AudioNoob sorry for misphrasing, btw, is the radio remote really that good?

Apparently YMMV, because I hear a big difference lol

 

[B-side J]

I'm suprized no one has noted anything about the X5/L..
With my UE 5EBs the X5L is dead silent where as the H120 is Ssssssssss even at medium volume (say home listneing level). I dont nitice it when I'm on the but or walking down the street where I would have the level higher.

 

[AudioNoob]

I was on the service bus with background music and chatter on, thats probably why I didnt hear the 5g hiss considerably.

X5 is known not to hiss

 

[ejoy]

ipod 5G + er4p : little hiss
ipod 5G + shure E2C: more hiss
Sony SRF-M35 + shure E2C: lots of hiss at zero volume

 

[z-iron]

(unamped) Sony HD5 with e4c, faint hiss audible only during the quiet parts of songs.

 

[CookieFactory]

5G iPod + Rockbox + E4c has siginificantly reduced hiss relative to the original firmware.

 

[Trippytiger]

There's no noticeable hissing at all with my E2c's (not the most sensitive of IEMs, to be sure) and Rio Carbon, even at max volume.

 

[ejoy]

I forget to say, no matter what source I use, as soon as I plug in something like HD600, the hiss is gone. Using a headphone amp does the trick too.

 

[The_Duke_Of_Eli]

Ipod shuffle - no hiss watsoever
Ipod mini - a bit of hiss
Ipod 4th gen monochrome - a very little bit of hiss

 

[ihategg_b]

Bump... useful thread (for me anyways)

Anyone have players paired solely with UM1 or UM2s that don't hiss? Thanks.

 

[Lisa]

iriver ifp-899 hisses with the buds from the creative zen vision m. the vision m doesn't.
I guess all ifp 7xx and 8xx hissss.