[HOWIE13]

Jeremey did give the OK to do this, so it's not a problem for the amp.

I notice a pop or click though, so I either turn the volume all the way down or power off first.

It's a horrid, quite loud scratchy noise too. Can't be much good for the ears.

 

[iancraig10]

Yeah damping probably is the issue.
I must confess I thought the ability to vary the output impedance was more to do with the 'times 8' damping formula than as a deliberate method of fine tuning the bass of all types of headphones, irrespective of impedance.
I suppose it comes down to the same thing though- trust your ears!

Solderdude meant it to be more like a bass 'honing' facility. Some headphones react more to it than others.

120 ohms output impedance used to be the norm years back but modern designs tend to get as close to zero as possible.

I think you are right. Instead of just believing an 8x theory, it is in fact better to let your ears judge. If it sounds good, then that's fine.

 

[RedBull]

My earlier version of Ember doesn't have settings to increase gain or output capacitor bypass jumpers.  :confused_face(1):

I can check my version of Ember tomorrow, it's about 1-2 years old.                                    

Wow, that has to be the very original Ember.

 

[HOWIE13]

Wow, that has to be the very original Ember.

It probably was- I'm very old too 

 

[RedBull]

I also not young

 

[DavidA]

My Ember is about 2 years old (pretty sure its the original) but it has the caps by-pass and input gain jumpers.  Had to install supercharger later

 

[HOWIE13]

  My Ember is about 2 years old (pretty sure its the original) but it has the caps by-pass and input gain jumpers.  Had to install supercharger later

yes mine has caps bypass but it's on the input not output, and at the back it appears to be an 'attenuation' jumper rather than a 'gain' jumper.
 
So it doesn't increase the gain if the signal is low, it lowers the signal if the input is high so as to afford more use of the vol pot. At least that's always been my understanding.

 

[RedBull]

Mine 'gain' setting is also jumper. I always have enough gain with jumper in low setting. If the input is low, I use High gain.
That's my understanding.
Or maybe we talk about the same thing but different perspective?

 

[HOWIE13]

Mine 'gain' setting is also jumper. I always have enough gain with jumper in low setting. If the input is low, I use High gain.
That's my understanding.
Or maybe we talk about the same thing but different perspective?

Yes we are saying the same thing really. I'm a bit drugged up with pain killers for a twisted back just now so apologies if I'm not thinking straight.
At least my hearing is not affected. 

 

 

[Solrighal]

  Yes we are saying the same thing really. I'm a bit drugged up with pain killers for a twisted back just now so apologies if I'm not thinking straight.
At least my hearing is not affected. 

 

 
Sorry to hear that mate, I genuinely feel your pain having been there more than once. Top Tip - get your Doc to prescribe Tramadol & your hearing will astonish you.

 

[iancraig10]

Yes we are saying the same thing really. I'm a bit drugged up with pain killers for a twisted back just now so apologies if I'm not thinking straight.
At least my hearing is not affected.   

Loadsa rest......

Don't rush back to athletics!!!

 

[HOWIE13]

   
Sorry to hear that mate, I genuinely feel your pain having been there more than once. Top Tip - get your Doc to prescribe Tramadol & your hearing will astonish you.

Thanks, Gordon. Actually I tried Tramadol and I felt really weird but they did work for a short period.

 

[HOWIE13]

Loadsa rest......

Don't rush back to athletics!!!

I'll wait a few weeks Ian.

 

[ericr]

I can't see why anyone would want to use an Ember with iem's if I'm honest. The gain is probably too much and although it's a hybrid, tubes are happier with higher impedance headphones in any case. The noise floor might also be noticeable with an iem.

Seems a bit too 'belts and braces' approach to be using a hybrid tube amp with an iem.

Even a Denon D2000 seems a bit low for it really to me. I tend to avoid the Ember with it actually and use something else.

An inquiry would be preferred over an assumption filled rant.

-Eric

 

[ericr]

It's a horrid, quite loud scratchy noise too. Can't be much good for the ears.

Or alternatively, take the headphones off for a second while changing the jumper.