Sager NP9377 microphone amp - max Ohm?

What's the maximum Ohm of a headset that the built in amp inside the Sager NP9377 can push?

 

Don't know what the output impedance is but I can say it pushes a beyerdynamic 770 pro 250 at an enjoyable listening level. If I want to rock out or use my headphones for gaming it is better to use an amp or amp/DAC. My beyer's COP's which iirc are 16 ohm and definitely a more fun headphone get pushed quite easily.

Oops. I am relating my experience from a np9772. If the np9377 has the same creative x-fi 3 chipset or whatever it's called I would assume my experience would be similar.

 

The biggest factor for high impedance headphones is the voltage swing. You really don't need much current, but the op-amps need to be setup for 15-18vpp to really drive 600 ohm headphones well.

*NOTE* I have NOT tried any of this generation Clevos/Sagers that have the boosted headphone stage.
I have a pair of 600 ohn DT990's, and while they work off of most headphone jacks I usually need some type of amplification. The motherboard I have for my desktop has a built in amp stage with replaceable op-amps and it's the only solution I've found that hasn't left me wanting a little more. I had an ASUS usb sound card that claimed it had a higher voltage swing, and while it was significantly better than most headphone jacks, it still maxed out before I'd like (there is really only so much you can do with a 5v dc supply unless you get crazy with the voltage converters). My usual solution for work is to use a Fiio desktop amp that has a 18v voltage swing. While it's not huge, it's not the most portable either. Hopefully the Clevo/Sager solution is closer to the mother board I have in my desktop.

 

I went ahead and moved this to the main Sager forum.