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Will the Shiit Lyr blow out my headphones?

post #1 of 10
Thread Starter 

I am looking to skip all the mid range amps and just skip to the cream of the crop and by a really nice amp. I have the hd598s and dt770 pro 80 and I do plan to buy more demanding headphones in the future and I want to make sure that it will work for all of my headphones.

post #2 of 10

WA22 then!

post #3 of 10

What do you mean by blowing out? Due to DC?

post #4 of 10

Due to the power on/off thump and being a very high powered amp..
 

post #5 of 10
Thread Starter 

 

Quote:
Originally Posted by telecaster View Post

WA22 then!

 

I meant skipping stuff like the e9

post #6 of 10

Ok, for amps its the load that determines power draw.

However, the volume knob/ gain setting on the amp can put in more voltage than the headphone can take if there is a power mismatch and you turn up the volume too high.

There's a max power rating for most headphones. Thats the max it'll handle before it gives up.

So you have to ensure that the power output of your amp is matched or lower than the max headphone power.

post #7 of 10

It wont blow out your headphones unless you turn the volume up too high and try to blow them out. 

 

Not surehow damaging the power on/off cycling could be to your particular headphones, but easy solution--turn on amp, insert headphones in after 1-2 minutes (because of the delay) making sure volume on 0 or low.  unplug headphones before turning amp off.  this could be unnecessary but I will always do it just incase and for piece of mind

post #8 of 10

 

Quote:
Originally Posted by mac336 View Post

It wont blow out your headphones unless you turn the volume up too high and try to blow them out. 

 

Not surehow damaging the power on/off cycling could be to your particular headphones, but easy solution--turn on amp, insert headphones in after 1-2 minutes (because of the delay) making sure volume on 0 or low.  unplug headphones before turning amp off.  this could be unnecessary but I will always do it just incase and for piece of mind

 


+1 on the plugging/unplugging thing. I do that as well. I know the Asgard had a slight issue, although it's fixed by adding the relay which mine has. Regardless, I still plug/unplug every time.


Edited by BrownBear - 4/24/12 at 7:50pm
post #9 of 10

 

Quote:
Originally Posted by BrownBear View Post

 

 


+1 on the plugging/unplugging thing. I do that as well. I know the Asgard had a slight issue, although it's fixed by adding the relay which mine has. Regardless, I still plug/unplug every time.

 

+1. Good Idea.

post #10 of 10

As someone who did have headphones that did blow on a Lyr, I have a surprising answer: NO it won't blow your headphones!

 

Old, original Schiit products developed a knee-jerk reaction by forum goers after a few stories of blown headphones early on.  That solution has been solved with the addition of a relay.   However, best practice is to still turn the amp on, leave the volume down, and then plug your headphones in after a minute or two.  Also, turn the volume down and unplug before you turn off the amp.  It shouldn't be needed, but it's a little bit of extra safety exercise in case the relay were to fail someday. 

 

In my case, my unit has a particular defect (I still need to send it in for RMA, I've been dragging my feet because I don't want to be without my Lyr!) where when I would plug in, even after waiting indefinitely to plug in (i.e. not power-up-thump related) I would still get a pop sound through the headphones.  It never caused damage, but one day I plugged in before the relay set, AND had the volume up.  On a properly working model that wouldn't matter.  On mine, which had a defect with audible symptoms, and I ran it that way for months without issue, that mistake cost the headphones.  Had I not plugged in before the realy (thus combining power thump with whatever my defect issue is) I probably would have used the amp forever without realizing it was even defective due to my underestimation of the symptoms. (I have two Lyr actually, the other does not demonstrate any sound at all during plug-in.  It's a very specific defect.)  Changing a bad set of tubes also reduced the amount of sound generated during plug-in but didn't eliminate it. 

 

So the short story is: ANY defective amp with the wrong kind of defect has the ability to blow headphones, a properly functioning Lyr will not blow headphones, and while no special actions need to be taken, it never hurts to get into good habits of waiting before you plug in.  What blows headphones is too much power.  Too much power makes the driver move too far.  I defective amp sends bursts of power when it's not supposed to be sending any.   A properly functioning amp sends too much power when you turn the volume up too high.  In either case, you do NOT want to be wearing headphones that are getting too much power, your eardrums will be blown out long before your headphones are.  Lyr is safe for pretty much anything but IEMs.  More sensitive headphones than the Senns may hear too much "hiss" as background noise, but it won't break them.

 

You should be fine with those headphones, and I certainly can't recommend Lyr enough, it's a fantastic amp.  I really lost any desire to listen on any other amps after having Lyr and that's why I'm waiting to send my damaged one in for repair....I just feed it my broken headphones on power-up, and it's fine after that, and I don't want to listen without it! wink.gif

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