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y2 - group buy? Interest check.

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http://www.head-fi.org/forums/f6/gamma-2-2...tml#post5949860

 

Gentlemen, fellow DIYers, Warm up your soldering irons!

 

Seems AMB has sent the y2 boards for manufacturing. Any one interested? Please note that you will also need to order a y1 board at the same time. If got interest, then I will try to organise the group buy. Maybe mouz will help?

 

Buying the boards is the easy part, getting the BOM will be more challenging, especially for us in SG. If can get all the parts from Farnell, then no sweat. But if need to buy from Digi-Key, then a bit problem if done individually. So a group buy will make sense.

 

What say you all?

 

Regards.

 

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What's the cost going to be like? And any idea if it does 24/96 via USB? The AMB page doesn't mention this.

 

Regards

CK

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Oh yes! count me in.

Heady, feel free to contact me if you need help in anything

I'll help with the face plates as usual too. :)

 

BTW, tot you could break open the Y1 and use it with the Y2 board too right?

Edited by mouz

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Oh yes! count me in.

Heady, feel free to contact me if you need help in anything

I'll help with the face plates as usual too. :)

 

BTW, tot you could break open the Y1 and use it with the Y2 board too right?

 

Can reuse the y1 we built but sayang lah, after putting into nice case with panels. Aiyah, might as well buy another and built it from new. Building it is not difficult but buying the parts were a pain.

 

I dunno why I so itchy. Now I am listening to a USB-Monica+Mojo feeding a SOHA-JISBO amping a DT150 and it's so blissful listening to Diana Krall. But we DIYers must built, right? :))

 

 

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Guys, I will post the group buy as soon as the boards become available. Let's hope this will be soon.

 

If any one of you guys have the time, please find out what's available from Farnell and what we need to get from Digikey. It will make things easier when we set up the group buy.

 

I will be busy for the next 3 weeks and will not have much time to set this up. Any help will be appreciated.

 

Thanks.

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Ok guys, here's what I can dig out. As you can see I got most of the stuff from mouser as they got most of the parts. Total cost for items below is about $121.42 without the stuff from AMB. Suggest maybe try to pair up in groups of 2 to get their free delivery here.

 

Farnell - SGD27.42

1015173, 1, Box Enclosures B2-080BK

 

Mouser - SGD94.17

649-68786-202LF|1|2P jumper

80-C320C104K5R|9|0.1uF X7R

80-C315C103K5R|2|10nF X7R

505-FKP2100/100/2.5|4|100pF film

505-FKP2220/100/2.5|4|220pF film

661-PSA10VB47M|2|47uF polymer electrolytic

647-UKW1H220MDD|2|22uF audio-grade

647-UKW1A471MED|2|470uF audio-grade Use (use this if you're driving headphones directly, otherwise stick to 22uF)

71-RN50C3321F|4|3K3 miniature 1%

71-RN50C-F-2K|4|2K miniature 1%

71-RN50C-F-4.75K|4|4K7 miniature 1%

71-RN50C-F-47.5K|2|47K miniature 1%

595-TPS793475DBVR|1|TPS793475DBVR

595-TPS79333DBVR|1|TPS79333DBVR

579-MCP100-315DI/TO|1|MCP100-315DI (ordered only 1 for this based on assumption no one will be using WM8740)

595-SRC4192IDB|1|SRC4192IDB (everyone wants upsampling I suppose)

238-WM8741GEDS/V|1|WM8741GEDS (there are others like WM8742 and WM8740)

595-OPA2365AID|1|OPA2365AID (using this as mouser doesn't have stock for AD8656)

549-C3391-24.576|1|rystek C3391 24.576MHz

633-G13AV-RO|1|SPDT on-off-on

633-G12AV-RO|1|SPDT on-none-on

517-850-01-08|1|Pin receptacle

 

AMB - ?

γ2 PCB

C19 / 1uF film / - / - / - / - / AMB / -

C25 / 1uF film / - / - / - / - / AMB / -

R1 / 68Rx4 resistor network SIP-8 isolated / - / - / - / - / AMB / -

R2 / 68Rx4 resistor network SIP-8 isolated / - / - / - / - / AMB / -

Ferrite Beads:

L1 / ferrite bead / - / - / - / - / AMB / supplied with γ2 PCB

L2 / ferrite bead / - / - / - / - / AMB / supplied with γ2 PCB

L3 / ferrite bead / - / - / - / - / AMB / supplied with γ2 PCB

L4 / ferrite bead / - / - / - / - / AMB / supplied with γ2 PCB

L5 / ferrite bead / - / - / - / - / AMB / supplied with γ2 PCB

Connectors/Jacks:

J6 / RCA jack / - / - / - / - / AMB / -

J7 / RCA jack / - / - / - / - / AMB / -

J8 / 3.5mm stereo mini-jack / - / - / - / - / AMB / -

J4 / 5P long pin header / - / - / - / - / AMB / supplied with γ2 PCB

J5 / 3P long pin header / - / - / - / - / AMB / supplied with γ2 PCB

 

If you're a fan of farnell, you might wanna refer to this list. Some missing parts though...

Farnell

1015173, 1, Box Enclosures B2-080BK

1457655, 9, 0.1uF X7R

1457653, 2, 10nF X7R

1005979, 4, Wima 100pF film

1005983, 4, Wima 220pF film

9189505, 2, 47uF polymer electrolytic

8766959, 2, 22uF audio-grade

8766762, 2, 22uF audio-grade

9343040, 4, 3K3 miniature 1%

9342788, 4, 2K miniature 1%

9343253, 4, 4K7 miniature 1%

9343261, 2, 47K miniature 1%

1652322, 1, TPS79333DBVR

1212673, 2, MCP100-315DI (Install U6 only if you are using a WM8740 for U5)

8452741, 1, SRC4192IDB (Install U4 if you want the upsampling feature)

1329587, 1, OPA2365AID

1524234, 1, SPDT on-off-on (SW1 and SW2 should not be installed if U5 is a WM8740 -- Short the FSEL and ACLIP pads to GND)

1524233, 1, SPDT on-none-on (SW1 and SW2 should not be installed if U5 is a WM8740 -- Short the FSEL and ACLIP pads to GND)

Edited by mouz

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I am interested.

 

It does not do 24bit/96K as the USB converter is PCM2707.

I already have the voltage converters, USB chip, reset chips, OP-AMP

 

But could join in if there is a complete BOM available.

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Nope that's only the parts for y2 with no PCB. Throw in the y1 to make it complete would be about another 100 odd I think.

 

Madwolf, doubt there will be a complete BOM available. Any help in this area would be very much appreciated though. :)

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