[landroni]

@WiR3D


 


 


 
If you're still trying to keep the original list up-to-date, there is another cable on ebay and penon:
3.5 mm Male to Female HIFI Audiophile Nvwa Copper-Silver 75 Ohm Impedance Cable


 
Produced by Palic ( Pailiccs ), but I can't figure if it's genuine brand or something generic. Anyways, ~$55.00:

 
http://penonaudio.com/3.5%20mm-Male-to-Female%20

 
http://www.ebay.com/itm/3-5-mm-Male-to-Female-HIFI-Audiophile-Nvwa-Copper-Silver-75-Ohm-Impedance-Cable-/121106916348

 

---

 
Another one is more generic, it seems, at 75 and 150 Ohm for ~10$:

 
http://penonaudio.com/3.5mm-Inpedance-Plug

 
http://www.ebay.com/itm/3-5mm-to-3-5mm-Impedance-Adapter-Plug-For-Hi-Fi-Audio-player-AMP-DAC-Earphone-/380932180092?var=&hash=item58b153c87c

 

[landroni]

 
 
You can choose between 15 and 620 ohms from this seller.

 
http://www.ebay.com/itm/ETYMOTIC-ER4P-TO-ER4S-RESISTOR-ADAPTOR-3-5MM-PLUG/291329605627?_trksid=p2047675.c100005.m1851&_trkparms=aid%3D222007%26algo%3DSIC.MBE%26ao%3D1%26asc%3D30542%26meid%3Ded9fbaa7793c46b894b171f2cf8893e5%26pid%3D100005%26rk%3D1%26rkt%3D6%26sd%3D281657676624&rt=nc

Is there an optimum impedance level to choose for such adapters (for use with IEMs)? Should one take the (what appears to be default) 75 Ohm; or should it be the 150 Ohm; or maybe something like 36 Ohm is preferable?
 
I'm trying to understand what impedance level should one target to reduce noise level but avoid changes in sound quality/signature...

 

[bbb321]

hey guys im trying to plug apple earpods into a headphone amp with one of those standard 3.55mm to 1/4 inch adapters and getting some noise/hiss. Do I need an impedance adapter to fix this? also anyone notice with apple phones into an adapter have phase issue when plugged in all the way? i need to play with it taking it slightly out from all the way to find the right spot.. thanks

 

[landroni]

  I received the 75 Ohm impedance resistor adapter from AW Audio Accessory (awwan) today. It's very high quality and lets me notch up the volume several degrees, gettnig my 16 Ohm IEMs out of the imbalanced volume land they resided in with my Vorzuge VorzAMP Duo (at least for all day listening, they were just a little too loud. Now they're not). I'm hearing no reduction in sound quality, but this weekend I'll test frequency response and all the rest with it.

I got the same adapter from awwan, and while I was initially happy with the build quality (it didn't seem to affect the sound signature of my FiiO EX1), it's clearly (partly) a hand-made item. After a week or so of listening I had issues with the left channel, whereas sometimes I hear only from the right channel and I need to turn the headphones connection within the adapter to make the contact work and the left channel work again. It's frustrating. I think it makes more sense to go for a ~50$ priced item from the start, to get a more a standardized build quality.
 
I'll probably get an APureSound impedance adapter next (45$):
http://apuresound.com/ra.html
 
Did anyone had experience with APureSound adapters?

 

[landroni]

  hey guys im trying to plug apple earpods into a headphone amp with one of those standard 3.55mm to 1/4 inch adapters and getting some noise/hiss. Do I need an impedance adapter to fix this? also anyone notice with apple phones into an adapter have phase issue when plugged in all the way? i need to play with it taking it slightly out from all the way to find the right spot.. thanks

Either an impedance adapter, or a headphone amp designed for IEMs like FiiO E12A. But if you're bothering with a headphone amp, then perhaps most appropriate would be an upgrade in headphones, like e.g. the entry level but excellent value for price FiiO EX1.

 

[Lunatique]

I just bought this from ebay, and I think I got the wrong one: http://www.ebay.com/itm/271320560060
 
What I'm trying to do, is to DECREASE the impedance of my sources, so that my very sensitive low-impedance IEMs (Angie, RE600S--both are 16 Ohm) will sound correct. Right now,Angie has significant lower volume in the 4KHz region and sounds hollow when plugged into my computers or headphone/speaker controller, but sounds much more neutral when plugged into my Galaxy Note 3. 
 
I bought that adapter assuming it'll increase the impedance of the IEM, but I think it's actually the opposite, because when I used it on my Note 3, it had the same problem with the 4KHz region. 
 
So I guess this means I'm SOOL and should just use amps with very low impedance instead (<1 Ohm)? 

 

[polecrab]

Does anyone know whether it matters in which direction you use one of these adapters (e.g., http://www.ebay.com/itm/ETYMOTIC-ER4P-TO-ER4S-RESISTOR-ADAPTOR-3-5MM-PLUG-/291329605627?)? Let's say I wanted to use this adapter with a headphone that had a remote mic cable for use with iPhones. If I plugged this adapter into the iPhone, the mic wouldn't work. However, if the headphone had a 3.5mm jack on the cup for a removable cable, then I could plug the impedance adapter into the headphone and then plug the cable into the adapter jack. This would allow the mic to work. However, the adapter would be in reverse direction from how it was intended to be used. I'm wondering if reversing the direction would make a difference. My goal is to reduce the sensitivity of the headphones so I can have finer control of my volume in the lower ranges (I never have my volume control past 12 o clock, even when driving my 300-ohm HD600 directly with an iPhone).

 

[ozkan]

Finally I got my 75 ohm adapter from Bocur Audio which sounds amazing compared to the original Etymotic 75 ohm cable.

http://m.ebay.com/itm/BOCUR-AUDIO-PURE-COPPER-99-99-75OHM-ADAPTER-CABLE-FREE-SHIPPING-TO-WORLDWIDE-/331798876094?nav=SEARCH

 

[mdiogofs]

I want to buy an impedance adaptor but don't know how many ohm should I choose...Let's say that, in a DAP, an IEM that has 16 Ohm hiss but other IEM at 32 ohm don't hiss. Should a 20 ohm adaptor be enough or I need to buy something higher?

 

[ClieOS]

I want to buy an impedance adaptor but don't know how many ohm should I choose...Let's say that, in a DAP, an IEM that has 16 Ohm hiss but other IEM at 32 ohm don't hiss. Should a 20 ohm adaptor be enough or I need to buy something higher?

 
Hiss or not is a result between how hissy the individual source is and how hiss prone the individual IEM is, therefore there isn't one universal answer to say which one small impedance number will work for every source and IEM combo out there. If you are not sure, always go a but higher than what you think you need. Otherwise, it is pretty much a trial and error process for most of us.

 

[mdiogofs]

Well, I bought a 20 Ohm impedance adapter to test things out. Let's see how it works, the hiss is not very bad...8 dollar so...Let's see the impact on things.

 

[ph0n6]

Anyone tried out the annentuator from this DIY site: https://diyaudioheaven.wordpress.com/headphones/headphone-attenuation-adapter/
It is supposed to decrease volume (and hopefully hiss as it does block more currents?) and kept the output impedance that the headphone "sees" low (lower than 1ohm), thus minimizing any changes to the sounds. I tried the 75ohm adapter from ebay but it makes the sounds shouty and hollow, there are no more hiss though.

 

[mdiogofs]

Well, I bought a 20 Ohm impedance adapter to see if the impact on sound is minimum.

 

[mdiogofs]

And it works! Using iBasso DX80 and Ostry KC06, the hiss was reduced considerably. Didn't felt impact in sound. Need to get the volume a bit louder. So, just a 20 Ohms impedance adaptor really makes the difference. 

 

[JayNYC]

reviving this thread....  if I have a headphone amp with a 5 ohm output impedance, but I would like it to have a 4 ohm output impedance so it works with 32 ohm headphones (8x), which on-the-market product would I buy?
the headphone amp has a 1/4" female jack, and the headphones have a 3.5mm male plug.
 
thanks