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Group buy PassDiy Class A Headphone Amp Whammy

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Post by terenceng94 on Wed Mar 11, 2020 11:19 am

Posting here to see if there's any interest to do a group buy for Pass DIY Whammyy headphone amp.
Shipping costs would be around $20 if the quantity is at least 5 (PCB + Parts). 

Here's the thread :
https://www.diyaudio.com/forums/pass-labs/317803-whammy-pass-diy-headphone-amp-guide.html

Here's the link to the store :
https://diyaudiostore.com/products/whammy

terenceng94
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Post by chchyong89 on Tue Mar 17, 2020 2:08 pm

It will be more interesting if you sell it as complete products here, because most of the hifi kakis here dont have the tools to solder and multimeter to troubleshoot. 

But they are a lot of fanz out there. Smile

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Post by terenceng94 on Thu Mar 26, 2020 7:22 pm

I have decided to get someone to manufacture the PCB to the specified specs by Wayne from Pass Labs. I ordered 10 of it. I just can't seem to get enough people for a group buy and shipping cost from the US is too expensive and not worth it considering I can get this made to very high quality at a cost much lower than buying straight from the US. I do intend to sell off the remaining boards at cost + some shipping and handling. This all of course with Wayne's permission. It has not arrived yet. I can offer guidance if there's interest to building it Smile A multimeter + tools for soldering is just less than rm300 for reasonably good working ones. Your ROI will be many many times more in terms of the sound quality you get + the learning process will definitely help you appreciate hifi better Smile.

Also, it's WHAMMY (Wayne's Headphone Amplifier Must Make Yourself)  tongue . The whole entire build is very doable and can be done in less than a day.

Nevertheless, this project would cost very little. BOM is about RM550 not including transformer + chassis (which should set you back another RM300. So this project is very doable below RM1000.

It could set you back another RM300-400 if you wish to go for the best sounding opamps (BTW, e14 has a 15% off for the past 1-2 weeks, I'm not sure if there still is, but i bought some OPA627BP <- very good specs and very close to Burson according to many forummers in Diyaudio forum).

Anyways, regarding selling it as a complete product, I don't think that's possible. Have too many things going on with life right now. And hifi is mostly a hobby than bread and butter for me. Perhaps if you are keen I can point you towards sourcing all the BOM and you can get someone to build it? I reckon it might set you back another rm1,000 on just workmanship (unsure, but I see people in SG charging approximately about $SGD200 just for workmaship alone for the Crack which has much lesser components to solder and no work on chassis required. Link : https://sg.carousell.com/p/bottlehead-crack-otl-tube-headphone-amplifier-121164984/ )

Cheers! Smile

terenceng94
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