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Interest for GB for MarcelvdG valve DAC
Interest for GB for MarcelvdG valve DAC
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Old 2nd November 2017, 03:41 PM   #11
pinnocchio is offline pinnocchio  Canada
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Hi leadbelly,

Do you have any specs you can publish on this thread? I do not want to buy documents yet. Have you auditioned this DAC, if not, can you point to some reviews?

Here's some info that you be nice to have:

- DAC max bit depth and sampling frequency
- Input interface (i2s, coax, toslink, usb, etc...)
- Audio stream supported (PCM, DSD, DoP)
- The usual analog out specs
- Where can we purchase the FPGA board?

Thanks for your help
Do

PS, forget about my previous post, seems like you got everything under control for PCB manufacturing. I had skipped this part while reading too fast...
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Old 2nd November 2017, 03:46 PM   #12
leadbelly is offline leadbelly  Canada
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Please do not pollute this the thread with discussion. The discussion thread is clearly identified in the 1st post.
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Old 2nd November 2017, 03:54 PM   #13
pinnocchio is offline pinnocchio  Canada
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Quote:
Originally Posted by leadbelly View Post
Please do not pollute this the thread with discussion. The discussion thread is clearly identified in the 1st post.
I just sent you a PM. Not trying to pollute your thread.
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Old 2nd November 2017, 03:59 PM   #14
leadbelly is offline leadbelly  Canada
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Quote:
Originally Posted by pinnocchio View Post
I just sent you a PM. Not trying to pollute your thread.
Actions speak louder than words. Click. You can do it. Click that link. Read. So easy really.
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Old 2nd November 2017, 10:12 PM   #15
MarcelvdG is offline MarcelvdG  Netherlands
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Quote:
Originally Posted by pinnocchio View Post
Do you have any specs you can publish on this thread? I do not want to buy documents yet. Have you auditioned this DAC, if not, can you point to some reviews?

Here's some info that you be nice to have:

- DAC max bit depth and sampling frequency
- Input interface (i2s, coax, toslink, usb, etc...)
- Audio stream supported (PCM, DSD, DoP)
- The usual analog out specs
- Where can we purchase the FPGA board?

Thanks for your help
Do
Hi Do,

So far there is only one of these DACs on the planet, right here in my living room, so there are no reviews yet. For what it's worth, I definitely like it. I've answered your technical questions in the technical discussion thread:

Valve DAC from Linear Audio volume 13

Best regards,
Marcel
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Old 3rd November 2017, 02:42 PM   #16
pinnocchio is offline pinnocchio  Canada
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Thanks!
Do
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DACs : TPA BII + OPC's NTD1 I/V | Signalyst DSCv2 | Mirand AK4490 + Discrete Output Speakers : Troels Gravesen ATS-4 | Sagwee LT V3
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Old 3rd November 2017, 03:21 PM   #17
randytsuch is online now randytsuch
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I really don't need another project, but what the hell lol

Member PCB set Transformer FPGA
leadbelly 1 1 1
Bvtrinh 1 0 1
32y0 1 0 0
pluplog 1 0 1
randytsuch 1 0 0

BTW, digikey carries the fpga board for $214 but none in stock with a pretty long lead time. They must order from trenz whenever someone buys one, and then trenz would need to build and ship over to dk.
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Old 4th November 2017, 03:28 PM   #18
leadbelly is offline leadbelly  Canada
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Quote:
Originally Posted by randytsuch View Post
BTW, digikey carries the fpga board for $214 but none in stock with a pretty long lead time. They must order from trenz whenever someone buys one, and then trenz would need to build and ship over to dk.
Thanks for pointing that out. That is quite significant for North America. The price on the Trenz website is either $USD262 or $USD220 depending on what tax is included and where you are. However, if I order to Canada from digikey.ca I can get it for $CAD305 to my door all in, which is a huge savings. That pretty much kills adding the FPGA as part of the group buy.
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Old 29th December 2017, 09:25 AM   #19
MarcelvdG is offline MarcelvdG  Netherlands
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The latest configuration file adds an I2S input with raw DSD support, see the discussion thread for details ( Valve DAC from Linear Audio volume 13 posts 45 and higher).
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Old 2nd January 2018, 07:15 PM   #20
randytsuch is online now randytsuch
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Quote:
Originally Posted by MarcelvdG View Post
The latest configuration file adds an I2S input with raw DSD support, see the discussion thread for details ( Valve DAC from Linear Audio volume 13 posts 45 and higher).
Thanks for this revision, should make your dac more appealing.

Was hoping this would generate more interested in the group buy.
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