Sorry for bringing up an old thread. But I have low impedance headphone and IEM at the moment (Grado SR60i, Brainwavz M1, and then later a Future Sonics Atrio).

I recently bought a cMoyBB v2.03. As you all know, low impedance demands more current, and my research has proven my slight worry, that low impedance cans/IEMs can damage the amp in time. I am a low volume listener, but just to be safe before I get myself some higher impedance gears, I would like to get an impedance adapter, just to be safe(my friends LOVE volume, wouldn't want them secretly pumping out volume using the amp without one when trying it out. They can be stubborn sometimes).

Would any cheap impedance adapter be good enough? Does it matter?

Actually, JDS Labs says because of high current demand of low impedance IEM/headphones, the amp is the one to get damaged.

But my question to JDS Labs have been answered. Apparently, and fortunately damage to the amp this way is very rare, but does happen. Some guy over at head-fi damages his amp by driving it to distortion levels for weeks. It was fried eventually. I don't think I will be doing that......and I don't think I'll lend it to my friends that long, and I guess I just have to be extra careful when they use it.

If I find a dirt cheap one at some electronics store, might as well buy it for the sake of experimentation.

Don't have an interconnect yet. Still waiting from wotiyo. Should arrive tomorrow if he sends it today.

I can't wait to try it with my SR-60i.

Yeah, basic physics. Low resistance = High current, low voltage...and vice versa.

I'm not trying to cut down hiss, I'm trying to avoid frying the amp from prolonged usage at high volumes using low impedance outputs.....or how about I just don't lend it to my friends.

I guess if I were to buy one might as well not go crazy with numbers. Anything that can make the total impedance around 50+Ohm would be nice.

This post has been edited by tunertoobe: Jun 30 2011, 10:24 AM

Sure thing!

Not really.
Did however require a bit more turn of the volume knob. Never notice anything significant. I think the bass was a bit more controlled when it went louder(than comfortable), but I'm not too sure.

Oh, in case you're asking where I got the adapter, a friend of mine lended it to me. I don't know where he got it from. Looks old though. Damn, I even forgot what impedance it was. I used it with the cMoyBB v2.03 with Bass Boost switched on, just FYI.

This post has been edited by tunertoobe: Dec 9 2011, 11:29 AM

Yes...same story. Only this time the bass was.....for any bass head they would say good. For me, it was close to being absurd, almost funny. The amount was ridiculous.

The amp is excellent for bringing up the bass. The SR60i became the perfect headphone for hard rock.

Hehe, sure. Different source, different output will make the result differ greatly. It's really something to read about it, and then experiencing it for yourself.

This post has been edited by tunertoobe: Dec 9 2011, 11:44 AM