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Build your own portable AMP

post #1 of 8
11/12/11 at 2:42pm
Thread Starter 

Hi,

 

I had a question, a long while ago i saw a topic on head-fi about a portable AMP that you could build for 100 dollars or get it assembled for a bit more money here on head-fi. Since i wanne start building my own AMP i would like to know if anyone else remembers that topic, if yes what was the link of it.

 

Thank you!

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post #2 of 8
11/12/11 at 3:11pm

The cmoy amp.

 

Plenty of threads, id link it but i can't find the main one.

 

Anyway just run a search and im sure you'll find it.

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post #3 of 8
11/13/11 at 7:16am
Thread Starter 

Thanks but i don't think it was a cmoy amp but i'm not sure. If i can't find it i will make my own cmoy amp i think using http://tangentsoft.net/ but is the "required part" list on his site up to date?

 

Thanks!

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post #4 of 8
11/14/11 at 12:39pm

No idea, never built one.

 

Could it have been this amp?

 

http://www.jdslabs.com/item.php?fetchitem=O2Asmb

 

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post #5 of 8
11/14/11 at 6:15pm

Also, the Objective 2, or O2 for short. Designed purely on specs and measures if you like that sort of thing.

http://www.head-fi.org/t/565821/so-the-objective2-headphone-amp-designed-entirely-around-the-measurements-please-read-rules-before-posting

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post #6 of 8
11/15/11 at 4:10pm

either the objective 2 or the mini^3 both fits that description

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post #7 of 8
11/15/11 at 4:25pm
Quote:
Originally Posted by weebeast View Post

Thanks but i don't think it was a cmoy amp but i'm not sure. If i can't find it i will make my own cmoy amp i think using http://tangentsoft.net/ but is the "required part" list on his site up to date?

 

Thanks!



I recently built it. Yes, the list is up-to-date.

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post #8 of 8
11/15/11 at 4:43pm
Thread Starter 

 

Thanks guys! It's the Objective 2 that i ment.

 

I'm gonna start first with the CMOY

 

Instead of 220 µF/ 35 V electrolytic capacitor, radial leads i got 50V and instread of 0.1 µF polypropylene film cap 200 volt i got 400 Volt.

 

As op-amp i'm still thinking of what i should use, 

 

My options:

 

OPA658P

OPA2132PA

OPA623AP

OPA445BM

OPA541AP

 

I hope it will work

 

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