DIY D1 I/V Stage from Pass Dac PCBs for sale

[poolorpond]

I am just about to start building these boards and have a question about the output filter and series resistor. The CR high pass filter created with the 4.7 uf cap and 100k resistor to ground should give a corner frequency of .3 Hz. I wanted to change this to 10k to ground and 2uf cap, which should give an 8 Hz f3. The 2uf cap is cheaper.

However, does the 220 Ohm series resistor have to be incorporated into the equation? It looks like a voltage divider in reverse but I'm not sure if it actually behaves as one. My guess is that it does not. Any thoughts?

 

[skseah]

Hi Promitheus,
Sorry to be so late....do you still have some PCBs left ? I would like a pair of the PCB for the output stage & PSU.
Best Regards
S K

 

[promitheus]

can you email me personaly?
I still have boards

 

[FrancoB]

If you're interested I have the boards(from Promitheus) built and tested.

Send me a good offer!

Cheers

 

[jameshillj]

Built and tested D1 I/Vstage

As a new person to this, I'm under moderation so can't email you directly.
On the 8-17-06, you were offering a complete D1 I/V output board with transformer for sale. If it is 240v @ 50hz and is still available, I would like to purchase it.
James Hill
[ jameshillj@optusnet.com.au ]

 

[bach2800]

Any board left?

Thierry

 

[promitheus]

Yes I do have boards and Parts.
Please contact me with Email.

 

[Stevox]

Hi promitheus

I have just build your D1 I/V stage, and it's playing very well.
I have connected it behind the non-profit ver.3 TDA1541a DAC from Thomas (Tube-lover).
It sound very good to me.

Thanks,
Peter.

 

[steinchen]

how much current does this stage draw ? I'm going to pick a suited transformer.

 

[Stevox]

Hi,

I'm using 2x30volt 50va,but I think that you can use 30va.

Peter.

 

[promitheus]

I think its 10-20mA per channel.
So 10VA would be minimum.
I use 50VA.

 

[promitheus]

some of you have used the D1 I/V stage with the 1451a DAC did you make any changes or did you use the stage as is`?

 

[cotdt]

i'll take 2 main boards and 2 power supplies.

 

[edanovaro]

I'm looking for an IV stage for the RAKK dac, which is based on the PCM1794 and is balanced. Can I use two D1 ? Any experience ?
thanks
Emanuele

 

[LTK]

I also have a pcm1794 based dac (Ezdac) I don't use balanced inputs with the amps though, is it possible to use a D1 with the PCM1794 for line out instead of balanced?

 

[pchw]

Hi,

Are the boards still available?

Thanks!!

 

[risperdal]

Hello,

need four boards. Thanks

Regards

 

[promitheus]

can you contact me per Email?
there is no link to your email

 

[redpepper]

Hi,
I would like t try this output I/V stage do you still have 1 main board and 1 power supply board?

 

[redpepper]

Hi promitheus

What is the status of my order of i/v stage complete kit that I have done and pay some days later of my last post.
I've try to reach you with e-mail but I do not have get any answer.