[naamanf]

I still think you need them unless your amp can do the dc filtering.

 

[BrianDonegan]

Quote:

When using the Ballsie for balanced output, this is safe too, right?

No. the DC offset will still be present on the balanced outputs of the Ballsie. As naamanf mentioned, some equipment can deal with the 2.5V offset, but definitely not all.

 

[04BluMach]

Quote:

Originally Posted by naamanf /img/forum/go_quote.gif Well I can tell you what sounds better than Blackgates. No Blackgates. Pulled them out and installed jumpers. Really seemed to make a huge difference. I am always a bit skeptical of what I hear when changing things around but it really does sound a lot better. Seemed to make the largest difference on the top end and transparency. Very worthy upgrade (downgrade?). Here it is: Still waiting on a certain Uber controller to finish it up and make it pretty.

SWEET build....

No high Frequency hash or listening fatigue experienced with the removal of the BG's from the output? What level, if any, dc on your outputs with the BG's removed?

 

[pinkfloyd4ever]

umm I'm an electrical dumbass but why would someone want to take an awesome balanced dac, add a S.E. converter and then try to use that for a balanced setup? Why not just skip the ballsie in the first place?

 

[naamanf]

Quote:

Originally Posted by 04BluMach /img/forum/go_quote.gif SWEET build.... No high Frequency hash or listening fatigue experienced with the removal of the BG's from the output? What level, if any, dc on your outputs with the BG's removed?

There might be just a tad but I much prefer the sound now with them gone than with them there. The problem is I am going to need a output with no DC eventually. I think I might give the Zap filter a try.


The DC offset is 2.5V.

Quote:

Originally Posted by pinkfloyd4ever /img/forum/go_quote.gif umm I'm an electrical dumbass but why would someone want to take an awesome balanced dac, add a S.E. converter and then try to use that for a balanced setup? Why not just skip the ballsie in the first place?

The ballsie has separate SE and balanced outputs.

 

[hershann]

Brian,

any idea when the next batch of Opus will be available?

her shann

 

[BrianDonegan]

We should be ordering the new boards in the next day or two. It will take a few weeks for them to arrive, then I need to start building. Probably the beginning of February. I'll post ship dates on our site once I know more detail.

 

[SoapSeller]

Quote:

Originally Posted by BrianDonegan /img/forum/go_quote.gif No. the DC offset will still be present on the balanced outputs of the Ballsie. As naamanf mentioned, some equipment can deal with the 2.5V offset, but definitely not all.

Thanks for the answers.

My in-build-b22 will kill my headphones with such offset

Probably I'll try to change the caps, and maybe the zapfilter later.

 

[BrianDonegan]

The ZapFilter has caps in the path too (I think). It's either going to be a discrete circuit, op-amp or caps to get rid of the offset, take your pick. You could use a TXD module to do it as well.

[EDIT] Nope, it doesn't. Just looked. Well, not ELs anyway.

 

[koike]

hi brian,
im wondering if its possible to reserve a set since everything goes so fast?
i have been emailing you but to no avail.

 

[Epicurean]

Quote:

Originally Posted by BrianDonegan /img/forum/go_quote.gif The ZapFilter has caps in the path too (I think). It's either going to be a discrete circuit, op-amp or caps to get rid of the offset, take your pick. You could use a TXD module to do it as well. [EDIT] Nope, it doesn't. Just looked. Well, not ELs anyway.

AFAIK the Zapfilter mkII doesn't have caps anywhere in the signal path but uses an opamp for a dc-servo.

 

[BrianDonegan]

Quote:

AFAIK the Zapfilter mkII doesn't have caps anywhere in the signal path but uses an opamp for a dc-servo.

It has three 470pF caps (silver mica), one for stability, to as filters, similar to the Ballsie. Nothing wrong with that. Can't make a filter without them.

 

[Cauhtemoc]

Quote:

Originally Posted by BrianDonegan It has three 470pF caps (silver mica), one for stability, to as filters, similar to the Ballsie. Nothing wrong with that. Can't make a filter without them.

Actually, all three as used for filters. The first capacitor is part of a differential filter set at 127 kHz, the second and third capacitor are two single filters set at 84 kHz.

 

[BrianDonegan]

Quote:

im wondering if its possible to reserve a set since everything goes so fast?

Once we know when the boards will be arriving and we have a solid ship date (including time for me to build), we will open up pre-orders. We are again doubling the number of boards in the order, so they should last longer this time. We are also going to be ready to order more before we run out.

 

[regal]

Quote:

Originally Posted by BrianDonegan /img/forum/go_quote.gif The ZapFilter has caps in the path too (I think). It's either going to be a discrete circuit, op-amp or caps to get rid of the offset, take your pick. You could use a TXD module to do it as well. [EDIT] Nope, it doesn't. Just looked. Well, not ELs anyway.

or a Sowter transformer