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Post by me262 on Jul 11, 2016 12:56:22 GMT -5
Hi All,
Just a quick question. For the DC-1 I know it has a fully balanced outs. It also has a single ended analogue input. Does the single ended input have an inverter on it so that the output signal through the balanced outs are also fully balanced. I ask because I have a tube headphone amp that needs a fully balanced input and I was wondering if I could use the DC-1 to convert my single ended devices.
Thanks
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KeithL
Administrator 
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Post by KeithL on Jul 11, 2016 13:41:23 GMT -5
Yes. Hi All, Just a quick question. For the DC-1 I know it has a fully balanced outs. It also has a single ended analogue input. Does the single ended input have an inverter on it so that the output signal through the balanced outs are also fully balanced. I ask because I have a tube headphone amp that needs a fully balanced input and I was wondering if I could use the DC-1 to convert my single ended devices. Thanks |
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Post by mfeust on Jul 11, 2016 16:08:56 GMT -5
Yes. Hi All, Just a quick question. For the DC-1 I know it has a fully balanced outs. It also has a single ended analogue input. Does the single ended input have an inverter on it so that the output signal through the balanced outs are also fully balanced. I ask because I have a tube headphone amp that needs a fully balanced input and I was wondering if I could use the DC-1 to convert my single ended devices. Thanks Ok who took over Keith's posting, because there is no way he just posted a one word response Mark |
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Post by Axis on Jul 11, 2016 16:14:17 GMT -5
Yes. Hi All, Just a quick question. For the DC-1 I know it has a fully balanced outs. It also has a single ended analogue input. Does the single ended input have an inverter on it so that the output signal through the balanced outs are also fully balanced. I ask because I have a tube headphone amp that needs a fully balanced input and I was wondering if I could use the DC-1 to convert my single ended devices. Thanks This is news. The DC-1 can take a single ended analog input and make it balanced out ? Why do I not know this ? Wow ! |
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Post by novisnick on Jul 11, 2016 16:15:34 GMT -5
Ok who took over Keith's posting, because there is no way he just posted a one work response Mark +100 Where is KiethL!?!?!? Somebody stole him Im sure!!! Somebody's not talking!!  |
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Post by Axis on Jul 11, 2016 16:48:03 GMT -5
Ok who took over Keith's posting, because there is no way he just posted a one work response Mark +100 Where is KiethL!?!?!? Somebody stole him Im sure!!! Somebody's not talking!! View AttachmentI just got it Nick. Your right, KeithL would not just respond with one word. Aliens have taken over KeithL everyone !  |
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Post by garbulky on Jul 11, 2016 16:58:09 GMT -5
This is news. The DC-1 can take a single ended analog input and make it balanced out ? Why do I not know this ? Wow ! That is very cool! One more notch for the very nice DC-1. |
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Post by monkumonku on Jul 11, 2016 17:18:42 GMT -5
+100 Where is KiethL!?!?!? Somebody stole him Im sure!!! Somebody's not talking!! View AttachmentI just got it Nick. Your right, KeithL would not just respond with one word. Aliens have taken over KeithL everyone ! Not aliens, Illuminati. |
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Post by eclypse on Jul 11, 2016 19:42:31 GMT -5
Yup! No doubt.. Kiethl one word answer is a sign of something bad about to happen!!
Never thought I'd see it ever!
Maybe he was on the phone?
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Post by Axis on Jul 12, 2016 8:14:35 GMT -5
Hi All, Just a quick question. For the DC-1 I know it has a fully balanced outs. It also has a single ended analogue input. Does the single ended input have an inverter on it so that the output signal through the balanced outs are also fully balanced. I ask because I have a tube headphone amp that needs a fully balanced input and I was wondering if I could use the DC-1 to convert my single ended devices. Thanks Thank you for asking this question. It makes sense with the fact the DC-1 has two DAC's inside so the analog side must also have two separate sides. Curious now how a analog inverter would work to do this in a DC-1 and hope keith comes back to give us a more detailed explanation. Never would have thought to ask this or think that this is the case. |
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KeithL
Administrator
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Post by KeithL on Jul 12, 2016 9:14:09 GMT -5
There are a few ways to "convert" from unbalanced to balanced. In the case of the DC-1, each RCA unbalanced input goes to the inputs of TWO high quality op-amp buffers (OPA2134's); one is configured as inverting and the other is configured as non-inverting. Together, the outputs of those two give you a balanced signal, which is then routed to the selector relays, volume control, and other circuitry. So, yes, the DC-1 will convert any unbalanced signal to balanced... Hi All, Just a quick question. For the DC-1 I know it has a fully balanced outs. It also has a single ended analogue input. Does the single ended input have an inverter on it so that the output signal through the balanced outs are also fully balanced. I ask because I have a tube headphone amp that needs a fully balanced input and I was wondering if I could use the DC-1 to convert my single ended devices. Thanks Thank you for asking this question. It makes sense with the fact the DC-1 has two DAC's inside so the analog side must also have two separate sides. Curious now how a analog inverter would work to do this in a DC-1 and hope keith comes back to give us a more detailed explanation. Never would have thought to ask this or think that this is the case. |
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KeithL
Administrator
Posts: 10,261
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Post by KeithL on Jul 12, 2016 9:16:02 GMT -5
... And I'm definitely NOT allowed to talk about them.... errr..... THAT  I just got it Nick. Your right, KeithL would not just respond with one word. Aliens have taken over KeithL everyone ! Not aliens, Illuminati. |
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Post by Axis on Jul 12, 2016 10:17:30 GMT -5
There are a few ways to "convert" from unbalanced to balanced. In the case of the DC-1, each RCA unbalanced input goes to the inputs of TWO high quality op-amp buffers (OPA2134's); one is configured as inverting and the other is configured as non-inverting. Together, the outputs of those two give you a balanced signal, which is then routed to the selector relays, volume control, and other circuitry. So, yes, the DC-1 will convert any unbalanced signal to balanced... Thank you for asking this question. It makes sense with the fact the DC-1 has two DAC's inside so the analog side must also have two separate sides. Curious now how a analog inverter would work to do this in a DC-1 and hope keith comes back to give us a more detailed explanation. Never would have thought to ask this or think that this is the case. Now we need a Stealth balanced headphone amp to go with a DC-1 in the same chassis. The DC-1 has a built in headphone amp that is good for low ohm efficient headphones but does not have a balanced output for headphones. There is something to say for a strong amplified balance headphone signal. With the awesome feature of the DC-1 to take any single ended analog source and convert it to balanced and the fact that any digital source is balanced out of the DC-1, it is all in one. You could use any source. Even phono. With the XPS-1 phono or SP-1 phono output you can listen to it on balanced headphones. Same with any digital source. |
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Post by garbulky on Jul 12, 2016 10:19:25 GMT -5
There are a few ways to "convert" from unbalanced to balanced. In the case of the DC-1, each RCA unbalanced input goes to the inputs of TWO high quality op-amp buffers (OPA2134's); one is configured as inverting and the other is configured as non-inverting. Together, the outputs of those two give you a balanced signal, which is then routed to the selector relays, volume control, and other circuitry. So, yes, the DC-1 will convert any unbalanced signal to balanced... Now we need a Stealth balanced headphone amp to go with a DC-1 in the same chassis. The DC-1 has a built in headphone amp that is good for low ohm efficient headphones but does not have a balanced output for headphones. There is something to say for a strong amplified balance headphone signal. With the awesome feature of the DC-1 to take any single ended analog source and convert it to balanced and the fact that any digital source is balanced out of the DC-1, it is all in one. You could use any source. Even phono. With the XPS-1 phono or SP-1 phono output you can listen to it on balanced headphones. Same with any digital source. I agree with the need for a dedicated high quality headphone amp. I'm thinking a bit bigger more along the lines of a headphone amp in a chassis the size of a USP-1 for more guts and power. An amp that can compete with flagships of other brands for a fraction of the price. |
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Post by Axis on Jul 12, 2016 10:25:36 GMT -5
Now we need a Stealth balanced headphone amp to go with a DC-1 in the same chassis. The DC-1 has a built in headphone amp that is good for low ohm efficient headphones but does not have a balanced output for headphones. There is something to say for a strong amplified balance headphone signal. With the awesome feature of the DC-1 to take any single ended analog source and convert it to balanced and the fact that any digital source is balanced out of the DC-1, it is all in one. You could use any source. Even phono. With the XPS-1 phono or SP-1 phono output you can listen to it on balanced headphones. Same with any digital source. I agree with the need for a dedicated high quality headphone amp. I'm thinking a bit bigger more along the lines of a headphone amp in a chassis the size of a USP-1 for more guts and power. An amp that can compete with flagships of other brands for a fraction of the price. Ok Garbulky. But can't you see I am trying to build a high performance small desktop system in the small Stealth chassis. I can indeed see Emotiva making a big headphone amp the size of a USP-1. With lots of power. I noticed when I was listening to all those headphone amps at the meet I just attended that the ones with separate power supply and huge output sounded the best. Not cheap to do this. If anyone can do it, it would be Emotiva. |
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Post by garbulky on Jul 12, 2016 10:28:47 GMT -5
I agree with the need for a dedicated high quality headphone amp. I'm thinking a bit bigger more along the lines of a headphone amp in a chassis the size of a USP-1 for more guts and power. An amp that can compete with flagships of other brands for a fraction of the price. Ok Garbulky. But can't you see I am trying to build a high performance small desktop system in the small Stealth chassis. I can indeed see Emotiva making a big headphone amp the size of a USP-1. With lots of power. I noticed when I was listening to all those headphone amps at the meet I just attended that the ones with separate power supply and huge output sounded the best. Not cheap to do this. If anyone can do it, it be Emotiva. Even at the size of a DC-1 chassis, I think it's possible to build a high quality headphone unit. I think something like that would sell too. Right now the only prototypes I've seen Emotiva appear to be units designed for pro use. I think that Headphone amp was meant to drive four headphones. I'm more interested in a high quality amp designed to drive one headphones but very well. |
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Post by Axis on Jul 12, 2016 10:36:00 GMT -5
Ok Garbulky. But can't you see I am trying to build a high performance small desktop system in the small Stealth chassis. I can indeed see Emotiva making a big headphone amp the size of a USP-1. With lots of power. I noticed when I was listening to all those headphone amps at the meet I just attended that the ones with separate power supply and huge output sounded the best. Not cheap to do this. If anyone can do it, it be Emotiva. Even at the size of a DC-1 chassis, I think it's possible to build a high quality headphone unit. I think something like that would sell too. Right now the only prototypes I've seen Emotiva appear to be units designed for pro use. I think that Headphone amp was meant to drive four headphones. I'm more interested in a high quality amp designed to drive one headphones but very well. The headphone amp in the DC-1 is very good and very good for use with multiple users sitting in a Pro environment wishing to listen to recording playback in a isolated manner as not to disturb others. It is single ended. I think they could fit a very good balanced headphone amp in a DC-1 chassis. This Cavalli Audio Liquid Carbon is much smaller than the DC-1   |
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Post by garbulky on Jul 12, 2016 10:41:17 GMT -5
That is a nice unit but its size limits its power. I would prefer something with a bit more beef which I think is totally possible with a DC-1 chassis. But yeah if they could approach the quality of the Cavalli unit, that would be quite impressive imo.
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