[keenween]

Does anyone make 600ohm or higher hps besides beyerdynamic? Thanks!

 

[joelpearce]

I think Sennheiser still has a few that are close to that range, though it really is mostly older studio headphones that have any reason to have such a high impedance.  Those higher range headphones are easier to run in a group without blowing out distribution amps in a studio.

 

[BotByte]

Why?
 
I don't even understand why have 600ohms when 32ohms is all you need.
 
There are others, but very few. Mostly ortho are power hungry
 
You do understand that you need a big blown out headphone amp to run a 600ohm can, right?
I'm happy I modded my receiver to run 600ohms. Anything more and I would actually need to buy a headphone amp.

 

[keenween]

I was considering building a diy preamp that could double as a headphone amp, but the kit recommends at least a 600ohm rating.

 

[joelpearce]

It's a bit more complicated than whether low or high impedance headphones are easier to drive.
 
If you have low impedance headphones and they are being run in a series, each headphone you add makes a major difference in the draw on the amp.  High impedance headphones create a more consistent and predictable draw from the amp, and it prevents blowing the amp in the peaks.