Hello, I am in need of a compact, low-cost alternative to the BUF634 for an output stage in a headphone amplifier. I have heard positive things about the EL2001, but I can't find a single distributor for the IC (has it been EOLed?). An output stage constructed from discrete components would...

Who makes these, who sells them, and how much is this going to cost me? Silver-plating would be better as the resistance is lower and the durability will be higher (harder than gold). Options?

Hello, I am looking for a nice, metal enclosure for an amp. You may ask, "ok, how big is your amp?" The answer to that depends on the dimensions of cases which are presented. In other words, the size of the amp will depend on the size of the case. If I run in to a very hot, pocket-sized...

Hello, Does anyone have a quantitative measure of the noise at the output of a "cmoy" amplifier using an OPA2132PA (or similar) op-amp? I just threw the basic circuit together using good quality components and I'm getting, in my opinion, a significant amount of noise on the output line (on...