ab initio
500+ Head-Fier
- Joined
- May 1, 2013
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Hmmmmm. The Valhalla/Lyr/Bifrost are available in black.
Awesome! May help with keeping the amps cooler...
Hmmmmm. The Valhalla/Lyr/Bifrost are available in black.
i bought a lyr amp early this year to power my new audeze headphones. schiit was one of the audeze rep recommendations. i liked the sound, but when i plugged my old standards into the lyr, a sennheiser hd595, these sounded like schit, no pun intended. they only sounded bad in the lyr. i had two audiophile friends over who confirmed it. jason of schiit was very nice, accepting the return, but after testing it, said he could find nothing wrong with the unit, and was at a loss to explain why the 595's would act that way in only the lyr. there was some sort of strange interaction between them.
much as i liked the amp, company, and owner, i am leery of another schiit product. sad too, as so many others really like the brand. would be very interested in any thoughts on why this happened. impedances of both headphones are close, and no other sources caused this difference.
I'd be worried about damanging the drivers with that much power.
If anyone is on the fence about moving to a Gungnir. Do it. A beautiful sound.
Hey guys/girls
Still having problems with the hum on the Bifrost/Lyr combo. A couple of updates...
- Checked the wall sockets with a receptacle tester - no issues.
- Plugged the gear into different wall sockets - no difference.
- Tried different interconnects - No difference.
A couple of other things...
- Tried my iPod hooked directly to the Lyr - no hum
- Hum remains in Lyr as long as it is connected to the Bifrost, even when the Bifrost is switched off at the power
- Hum stops if the Bifrost is unplugged from the wall.
Any thoughts? I think the last item may be quite a telling element - appears that the problem must be in the Bifrost...
Classic ground loop.
What put it over the top for me is the hum remains when the Bifrost is powered off but connected to the Lyr.
The interconnect "completes the loop".
There are likely two mains grounds. Or 2 different "earthed" things, Copper Bar, pipes attached to the house wiring. The Bifrost is sensitive to the very very low voltage contaminating one of the grounds.
The previous diagram shows this. Just give it a look for a bit and look at the legend that identifies the parts and paths.
Super hard to trace down. Might have a look in the bowels of your house at plumbing ties to ground. I may be wrong,here.... Plumbing should have it's own path to ground and not tied into the electrical ground. "Ground" is literally a solid copper stake driven a meter or so into the "earth / the ground" and tied to your main power panel. If there's another path to "earth" on your house wiring there's your loop. The rub is it's picking up stray voltage from an appliance, connection, whatever. Not enough to short anything but sensitive audio gear can't take it.
If you or an electrician can't find it, then try a Hum-X type of device. It's worth trying to fix rather than bandaid.... IMO
Thanks for the info...
Killer is that I'm in an apartment block, so trying to get the cause fixed will be near to impossible....
Hum-x here I come I guess...