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Valve DAC from Linear Audio volume 13
Valve DAC from Linear Audio volume 13
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Old 10th September 2020, 06:29 AM   #851
nautibuoy is offline nautibuoy  United Kingdom
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The tracking information on the PCBs, main DAC and filters, are likely to be delivered to me today or tomorrow so I should be able to start sending packages on over the weekend.

First thing I'll need is a delivery address for each GB subscriber - Paypal 'Family and Friends' doesn't provide me with that information. Could each of you send me a PM with the address please.

Once I know how much import duty I'll have to pay on the boards I'll make the final cost adjustments, add in the cost of onward shipping and that will give the amount for the final payment. I'll refund any over payments once everything bottoms out.

@luchoh, I'm still waiting on your second payment?

Cheers

Ray
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Old 10th September 2020, 06:25 PM   #852
nautibuoy is offline nautibuoy  United Kingdom
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So what do we have here...

Click the image to open in full size.

My experience with Fedex is that they deliver and then bill you for any import duty a couple of days later so I should be able to make any final cost adjustments soon. In the meantime I'll be packing boards ready for despatch and getting the shipping costs. I'll be sending boards on their way very soon.

I also received the smd components from Digikey today so I'll be taking everything over for the soldering service at the weekend.
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Old 11th September 2020, 06:07 AM   #853
nautibuoy is offline nautibuoy  United Kingdom
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Full house with respect to staged payments, thank everyone.

I've been in touch and the guy who is doing the smd soldering is literally in the middle of moving house so I'm sorry to say there will be a short delay before he gets his workshop up and running to be able to do the work - hopefully just a week or so. I'll let you know progress in due course.

Ray
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Old 11th September 2020, 05:12 PM   #854
nautibuoy is offline nautibuoy  United Kingdom
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I shipped the first of the bare PCBs this afternoon and will do the remainder when I get delivery addresses. I've PM'ed the relavant GB subscribers with tracking references.

Please hold off from making final payments until I get the bill for the import duty so we have final definitive costs. I'll request final balance payments, or make refunds, in due course.

I'm hoping that there will soon be a second operational build of Marcel's DSD Valve DAC!

I'm listening to mine while I'm typing this and continue to be delighted with just how good it sounds - I don't think you'll be disappointed.
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Last edited by nautibuoy; 11th September 2020 at 05:14 PM.
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Old 11th September 2020, 07:40 PM   #855
rowli is offline rowli  Sweden
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Well done with the group purchase Ray! The circuit boards look very nice!
Are you planning to test the filter PCB version with better "transformer parasitics" yourself, e.g design from post #837. Or are you content with current version? I can go for the current version. But If you plan to order yourself new filter PCBs perhaps me and some others can join in and have the main board sent when another version of the filter PCB is ready.

Micke
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Old 11th September 2020, 08:45 PM   #856
nautibuoy is offline nautibuoy  United Kingdom
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Thanks Micke

To be honest, regarding the revised filters, I've not thought it through yet - I took on a new team at work this week (an interesting experience with everyone working from home) - but I'm planning a second build and want to try alternative output stages, such as the CD-Enhancer that Raj has shown, with Valve DAC and my DSC2 so I'll probably modify the boards at some point. I'm also collecting parts for an amp with a balanced input so an output stage without transformers looks attractive.

If I do a new version of the output boards I'm more than happy to order a batch if there is interest, or simply make the gerbers available.

Ray
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Old 12th September 2020, 08:05 AM   #857
nautibuoy is offline nautibuoy  United Kingdom
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Default DSD Recordings

If it's of interest to anyone, 'Native DSD' are offering a short, but free, DSD sampler, available at various data rates. I'm currently downloading the DSD256 and 512 files.

NativeDSD Music's Free Starter Pack - NativeDSD Music

I have a couple of DSD recordings from NativeDSD and have been impressed with the recording quality.
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Old 13th September 2020, 06:56 PM   #858
Mikky1975 is offline Mikky1975  Italy
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Default Too late?

Ciao from Italy by a long time lurker
Am I too late for a couple of PCBs?

Best,
Mirko
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Old 13th September 2020, 09:06 PM   #859
nautibuoy is offline nautibuoy  United Kingdom
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You are in luck Mirko!

I have just two Main PCBs left, plus sufficient filter boards so you are able to scrape into the GB.

I will PM you with payment details so that you can secure the boards.

Ray
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Old 13th September 2020, 09:20 PM   #860
nautibuoy is offline nautibuoy  United Kingdom
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Attached is the latest update to my GB spreadsheet, including Mikky1975 joining the GB.

With Mikky1975 joining the unit costs of the PCBs has fallen some more as the costs have been spread more widely.

All main DAC PCBs have been accounted for so the GB is now well and truly closed.

Regarding the spreadsheet, if your DIY Audio name is higlighted in orange I am still waiting for your home address for delivery of the boards.

Apart from Mikky1975, I don't require any further payments at this time - when the final definitive costs are known I will contact you to request a final payment (or issue you with a refund if you have overpaid).

Cheers

Ray
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