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O2 Headphone Amplifier GB

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#224
olli1324 said:
Your order is currently worth £11.80+fees. I will let people know my paypal address and how much they owe on Wednesday once I fix the price of the GB. Just waiting to here quotes back from the manufacturers for the larger volume we now need.
Click to expand...

Please use PM to inform me, since I don't online fequently, I may missed the post, but PM will just only chance of being late but never missed, thanks.
 
#226
Guys,
the PCB for the desktop version is exactly the same - the difference is the case and jacks! (In other words, you just buy different components, and you have to work out the front / rear panels yourself.)
The only board-related difference is that you may choose not to include the battery clips or the audio jacks, opting instead for panel-mounted jacks.
 
#227
BlueFusion said:
Guys,
the PCB for the desktop version is exactly the same - the difference is the case and jacks! (In other words, you just buy different components, and you have to work out the front / rear panels yourself.)
The only board-related difference is that you may choose not to include the battery clips or the audio jacks, opting instead for panel-mounted jacks.
Click to expand...
Sorry, but there might be some confusion here. BlueFusion you're correct the O2 board can be adapted to a desktop case with panel mounted jacks, etc. I talk about that in the Enclosure Section.

But there will be an entirely new PCB specifically optimized for desktop applications. It will have a headphone protection relay, a more flexible gain structure, everything will mount on the board (no panel mounted anything), and some other optimizations that are possible in a desktop-only version.

But the new PCB is at least a few months out. There's more info in the other O2 thread here.
 
#230
All orders to date have been added (and amended where necessary).

I am in the process of writing the nested IF statement to compute price according to Country AND qty of boards ordered. It is looking beastly and I'm sure there is a simpler way to do it. I'm about to get on a train for 2 and a bit hours, so I'll have plenty of time to refine and check it 😀

Anyway, the point is, I will be uploading the list of who owes what later today (i.e. late afternoon/early evening in England). Keep your eyes peeled and make sure your paypal account is working!

Cheers
 
#232
Okay, this is embarrassing.

I did not realize that there will be a different PCB for the desktop version. I haven't been keeping up with things after initially reading the designer's articles.

So whereas I had stepped up my order from 1 piece to 2 pieces, I no longer want a second piece.

So 1x US total.

Really sorry about that. I can imagine wrangling all of our orders can be difficult without some of us changing our minds twice.
 
#233
I've published an O2 Summary article that's a short and sweet "Best Of" version of the three much longer O2 articles. 🙂

O2 Summary Page

o2%252520v11%252520board_thumb%25255B1%25255D.jpg
 
#238
Hello!!

Please follow the link at the end of this post to check your order and mke your payment. The details of how the cost is calculated is all done in my big spreadsheet (one column has about 9 nested IF statements!) but it breaks down as follows:
-£1.29 cost of board (seeedstudio)
- 15p packaging
- Postage via Royal Mail (dependent on weight, starts at just 77 odd pence for 1 or 2 boards to the UK and £2.11 for 6 boards shipped to the EU)
- nominal 5% buffer

I am currently taking payment ONLY FOR NON-US ORDERS! This is because I am hoping to find a US distributer (who would handle US and CAN orders) so that we can take advantage of cheaper postage. It will cost less than 30p per board for me to send a big batch to the US, making potential savings quite considerable.

Please read all of the interested instructions and bits of info which are repeated numerous times down the side of the list.

https://spreadsheets.google.com/spr...67_mMdEc0aUktMDdGNWZ4Z3lEb2tzSVJfcHc&hl=en_US

Please share this link around to make sure that everyone sees it as soon as possible.

Edit: I'll get round to adding new orders later. Thanks.
 
#239
olli1324, I was going to offer to be the North American Distributor, but since I'm in Canada, it might make more sense to have someone in the US do it. If no one else comes forward, let me know and we can work something out. One issue I see is whomever is going to do it is going to have to recoup their costs from somewhere, (do you charge less to the US buyers, and then NA Distributor would collect for their costs directly?) I do agree though that it is probably a lot lower cost way of doing it, since UK to North America postage can be quite high.
 
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