Re: DIY headphone amplifier

"Jem Raid" <jemraid@xxxxxxxxxxxxxxxxxxxxx> wrote in message
news:vqednSnCnY4ZLt3ZRVnyjg@xxxxxx
I'm thinking of making a headphone amp and have found
various sites with circuits.

I've also found the circuit diagram for the Grado RA1
amp, turns out to be a single chip of £0.50 value and a
few resistors, it gets great reviews and costs anywhere
between £350 and £400. It is in a mahogany case though.

http://www.geocities.com/rubin_jpk/rubin_images/GRADO_schem.gif

I intend to make mine in a roomy Scottish Shortbread
biscuit tin we got for Christmas. I do also have an old,
smaller and thicker gauge but rather battered Smith's
Crisp's tin from the 1950's does anyone think that
vintage tins may perform better than new ones?


This is pretty ironic, given all the angst about the sonics one reads about
JR4556 chips. I must have read 1,000 articles suggesting that one audio
component or another could be "mind-blowingly" enhanced by replacing 4556
chips with something more highly thought-of by the author.

Of course, its just fine, but people like to bad-mouth parts that are
readily-available and cheap, even if they perform just fine.

If you've misplaced your soldering iron, just try one of Behringer's
offerings with a headphone jack. They are very fond of 4556 chips and chips
like them... ;-)

http://www.behringer.com/HA4700/index.cfm?lang=ENG



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