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.

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?

Jem


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