I recently acquired a Marantz 8260 that I'd like to modify. It's been a few years since I bought high-end caps and I've noticed now that Black Gate's don't seem to be available anymore. What are folks using now? I'm especially concerned about the small non-polar series like the NX series. Has...

Is there a source for the connectors at the end of the Sennhesier HD580/600/650s? Im trying to make a DIY cable for them.

Can anyone recommend a good electric engineering textbook? I'm looking for a book at the college introductory level.

The gilmore dynamic I built makes a loud humming noise just like an electric shaver in both channels at the same volume regardless of the volume level setting. Does anyone have any idea what i might have done wrong? Thanks in advance.

I am using the HS284 heatsinks for the gilmore PSU. Where can I get screws and nuts necessary to attach the voltage regulators and the opamps to the heatsinks? Is thermal grease necessary? Thanks in advance.

Does anybody know of a source for headphone drivers? I have an old pair of headphones which I would like to fix. Thanks in advance.

I need a high quality regulated linear power supply around $30 where can I get one? 18-24VDC single output at least 500 miliamps Thanks in advance.

Whats the best way to put proffessional looking holes in Serpac plastic enclosures? What about hammond 1455 series aluminum enclosures. Any advice would be appreciated.

My preamp uses two Burr Brown OPA132PA opamps. Can I replace them with better ones? They are socketed so instalation should be easy. If so which ones. Thanks in advance.

I feel very dumb asking this but: On a stereo phono jack which band is the ground and which are the left and right channels? Thank you