[purk]

  Guys, sorry for the newbie question, but what are normal and pro bias jacks? I recently acquired an SR-007 mk1 and is looking forward to purchase a BHSE. I know for a fact that SR-007 mk1 requires more power to drive than the SR-009, and that BHSE has two headphone outputs.
 
1. If I were to order a BHSE from Justin now, how will it be configured by default?
a) two Stax normal bias
b) one Stax normal, one Stax pro bias
c) two Stax pro bias
d) one Stax plug (which bias?), one Sennheiser (which bias?)
 
2. If the SR-007 mk1 were to be my primary headphone, what is the optimal way to configure my BHSE and which bias should I use? I read somewhere saying that one should always use the pro bias for SR-007 and SR-009, while others said the normal bias has a higher gain so the SR-007 should be used with normal bias. I also read that having normal/pro bias will result in a different sound compared to having two pro bias, even if I use the same pro bias plug. Which is true?
 
3. Does normal/pro bias have anything to do with the number of pins? The SR-007 mk1 and SR-009 are 5-pin, while older discontinued headphones are 6-pin. I don't think I would use a old 6-pin Stax headphone, unless Stax decides to release their next flagship headphone with a 6-pin.
 
4. Most importantly, just what is the exact difference between normal and pro bias, and why is this important?

Unless you have the Senn HE90, I would go with the dual Stax Pro jacks

 

[Bones13]

I ordered my Silver BHSE with the Stax and HE90 jacks. I don't need to use both at once, and while I don't think I'll come across a HE90, if the rumored new Senn stats ever make the scene, I hope to be able accommodate. I also ordered the SR009 from Justin. I hope they come together, I have no other stat amp, or stat at this point.

 

[Phil95]

  received more front panel sets (black) which are for 25% of this batch of BHSEs, bringing the total that i have now to 35%. next up are blue, purple, and gray, and also have a small quantity of silver in the works to add to the very small quantity of silver that i already have. silver is by far the hardest of the colors to produce and i have started machining additional sets of panels to make up for what may be a low yield in those panels

Hello Justin
 
Will Santa Claus bring a few BHSEs -mine, for instance- in his sack? What a merry Xmas it would be!
 
Best regards anyway

 

[songmic]

I ordered my Silver BHSE with the Stax and HE90 jacks. I don't need to use both at once, and while I don't think I'll come across a HE90, if the rumored new Senn stats ever make the scene, I hope to be able accommodate. I also ordered the SR009 from Justin. I hope they come together, I have no other stat amp, or stat at this point.

 
I ordered a secondhand BHSE from a guy living in Seoul. These are the pictures he sent me. He told me that he is also sending Psvane EL34PH tubes, which are different from the black tubes shown in the picture.
 

 

 

 
It looks like it is a Stax/Sennheiser unit. Will it have a problem driving my SR-007 mk1 compared to a BHSE with two Stax pro jacks?

 

[eric65]

Very nice amp that this BHSE amp ; I know one or two guys on HCFR who would like to have this amplifier.

 

[NoPants]

   
I ordered a secondhand BHSE from a guy living in Seoul. These are the pictures he sent me. He told me that he is also sending Psvane EL34PH tubes, which are different from the black tubes shown in the picture.
 

 

 

 
It looks like it is a Stax/Sennheiser unit. Will it have a problem driving my SR-007 mk1 compared to a BHSE with two Stax pro jacks?

 
The outputs are daisy-chained so there's no difference

 

[Audio Jester]

   
I ordered a secondhand BHSE from a guy living in Seoul. These are the pictures he sent me. He told me that he is also sending Psvane EL34PH tubes, which are different from the black tubes shown in the picture.
 

 

 

 
It looks like it is a Stax/Sennheiser unit. Will it have a problem driving my SR-007 mk1 compared to a BHSE with two Stax pro jacks?

Can anyone identify those matching disks the amp+PS are sitting on?

 

[Bones13]

Don't know those. I got 2 sets of 4 simple black disks from audioadvisor in anticipation of my amp/psu.

 

[Dubstep Girl]

Beautiful amp

 

[AnakChan]

  Can anyone identify those matching disks the amp+PS are sitting on?

 
Those are just vibration isolators aren't they?? I use something similar for my speakers :-

http://www.musiclinkav.com/store/index.php?page=shop.product_details&product_id=477&flypage=flypage.tpl&pop=0&option=com_virtuemart&Itemid=1

 

[preproman]

Don't know those. I got 2 sets of 4 simple black disks from audioadvisor in anticipation of my amp/psu.

 
Link please?

 

[Audio Jester]

Those are just vibration isolators aren't they?? I use something similar for my speakers :-

http://www.musiclinkav.com/store/index.php?page=shop.product_details&product_id=477&flypage=flypage.tpl&pop=0&option=com_virtuemart&Itemid=1

Thanks AnakChan, I particularly like the style of the ones in the photo, but the ones you posted are pretty nice too.

 

[songmic]

Wait, so you guys are telling me that those metal disks below the feet are not a part of the stock BHSE package?

 

[georgep]

The table is extra too.

 

[philo50]

  The table is extra too.

ha ha