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Old 10th April 2004, 04:29 PM   #1
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Question Come here please,Peter Daniel.

Hello,Peter Daniel,Which I/V stage for PCM63P-K is you consider the best of all..I very need your idea..Please ...

Thank you very mach...

My E-mail:wilson_moo@hotmail.com
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Old 10th April 2004, 04:48 PM   #2
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I don't have any experience with that DAC, but I wouldn't be surprised if the I/V stage used in Pass Labs D1 wouldn't be one of the best
http://www.passlabs.com/pdf/d1-srv-man.pdf
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Old 10th April 2004, 05:02 PM   #3
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Smile Ooh.....

But I haven't the circuit of D1,and I very like Erno Borbley's circuit.Do you have the circuit of Erno Borbley's DAC and the I/V stage?Can you give me?In china we all along can't open the Erno Borbley's website,I dont know why...

and you MSN add is ???
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Old 10th April 2004, 05:14 PM   #4
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Here's D1 schematic:
http://www.passlabs.com/pdf/d1-srv-man.pdf
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Old 10th April 2004, 05:19 PM   #5
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Smile Yes ,thank you ..

I very like Erno Borbley's circuit.Do you have the circuit of Erno Borbley's DAC and the I/V stage?Can you give me?
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Old 10th April 2004, 05:19 PM   #6
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Default Re: Ooh.....

Quote:
Originally posted by audionline
But I haven't the circuit of D1,and I very like Erno Borbley's circuit.Do you have the circuit of Erno Borbley's DAC and the I/V stage?Can you give me?In china we all along can't open the Erno Borbley's website,I dont know why...
Borbely's website shows the schematic, but the schematic doesn't include any part values. You have to buy the kit.

se
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Old 10th April 2004, 05:22 PM   #7
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Smile Ooooo

Thanks ,Steve Eddy,And Could you give me some idea?
Thank you..
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Old 10th April 2004, 05:51 PM   #8
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Default Re: Ooooo

Quote:
Originally posted by audionline
Thanks ,Steve Eddy,And Could you give me some idea?
Personally I kind of like the idea of passive I/V. I've been meaning to get some TDA-1543s to try out with the circuit below.

R1, R3 and R4 are 150 ohm.

R2 is 150k ohm.

T1 is a Jensen JT-115K-E 1:10 step-up transformer.

Q1 and Q2 are each 1/2 of a 2N5566 dual JFET.

Q3 and Q4 are Toshiba 2SA1837.

The 150k ohm attenuator can be replaced with a 150k ohm fixed resistor if you don't want volume control.

se
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Old 10th April 2004, 05:59 PM   #9
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After experimenting with active I/V stages, I also come to conclusion that passive, resistor's based stage is the best sounding, to me (with TDA1543 of course).

Steve, if you want to experiment, I can send you that chip.
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Old 10th April 2004, 06:50 PM   #10
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Quote:
Originally posted by Peter Daniel
After experimenting with active I/V stages, I also come to conclusion that passive, resistor's based stage is the best sounding, to me (with TDA1543 of course).
NOS as well?

Quote:
Steve, if you want to experiment, I can send you that chip.
Thanks, Peter!

Not sure when I'd be able to get around to it though. I have a few things I need to clear from my plate first.

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