I have received my A47 headphone amp, but i seem to have a few problems. Since the amp doesn't have [ground?] the maker of the amp says that I have to use 2 9vs and use the connecting part of the 9vs as ground. I tested the amps today, and it seems like it works for around 10 seconds, and then I...

Oh thanks that really cleared it up for me blawh.

Hi guys, I was thinking about recabling my headphones, but I seem to have thought of a problem that occur: Don't I need 4 cables to recable my headphones? Right positive, Right negative, Left positive, and Left negative? A 3.5mm plug only has 3 places to solder on, Right, Left, and Ground! blawh.

thanks.

Anything I can use other than potting compound to "dip" the amplifier into to make a hard case? Living in Shanghai, China doesn't help! If I have no choice, would the method of using hot glue work? Or would the heat from the hot glue damage components?

Thanks.

I was thinking about making an enclosure for this amp: It is too long to fit an altoids tin, so I was wondering if covering the components with hot glue/any other things that dry up hard. That way it would still be small, and at the same time be rugged

Since I would want to use this in a portable way without an enclosure, i was wondering if covering all the components would make the amplifier more rugged, but would the hotness of the glue damage some components?

thanks for the answer;D

Since this is a bare PCB, would it be possible for me to cover it with hot glue for portable uses, or would the hotness of the glue damage the amplifier?

What about this one? Its called a MHHA amplifier?

Is this A47 amp comparable to a CMOY, and how much would such a build posted on top cost?

I have an extra PSU, and since its extremely old, i was wondering if i would use the wires attached to the motherboard and other devices to create a 3.5mm interconnect? Also, would it work for CAT5 Ethernet cable?

Is this a decent headphone amplifier? What is comparable to this amp? It is called a 47 Headphone Amp. This is really cheap and on a chinese site, but I cant seem to find anything about it! EDIT: pictures added