Come here please,Peter Daniel.

[audionline]

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

 

[Peter Daniel]

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

 

[audionline]

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 ???

 

[Peter Daniel]

Here's D1 schematic:
http://www.passlabs.com/pdf/d1-srv-man.pdf

 

[audionline]

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?

 

[Steve Eddy]

Re: 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...

Borbely's website shows the schematic, but the schematic doesn't include any part values. You have to buy the kit.

se

 

[audionline]

Ooooo

Thanks ,Steve Eddy,And Could you give me some idea?
Thank you..

 

[Steve Eddy]

Re: Ooooo

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

 

[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).

Steve, if you want to experiment, I can send you that chip.

 

[Steve Eddy]

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?

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.

se

 

[Peter Daniel]

Yes, NOS. Whenever you decide on those chips, just let me know😉

 

[Steve Eddy]

Yes, NOS. Whenever you decide on those chips, just let me know😉

Will do. Thanks!

se