Anyone know links to good linear, preferably regulated PS in US ? Voltage will be between 12V - 30V   I built desktop CMoy for someone in US, need to help him with choice PS for amp. I have only European PS available.

I am looking for nice button socket screws for Hammond 1455 aluminum enclosures. So far I use 3.5mm self tapping screws for metal. This works, but self tapping screws are usually with ugly heads. Hammond datasheet say #6 screws, so I find thees nice black 6-32 screws...

Someone ask me to build portable amp with uncompromising high voltage power. Here it is, in Hammond 1455J1202BK enclosure, 3x9V rechargeable battery inside       6.3mm phone jack, 3.5mm input on front, additional parallel RCA inputs on back panel, for use with home HiFi system...

Are anyone ordered transformers covers or anything from this? mablexporting.com) I can't send him mail, every time it returned as undelivered mail. Anyone now other places, where I can get nice transformers covers for 50 W R-core? Audio Catalog Zigis

Anyone now whats happen with Headphonia? Are they out of business? I buy USB DAC cable from Headphonia.eu website few weeks ago and pay with Paypl , not received yet, send e-mail 3 days ago - no answer. Today I search on Ebay, cant find any Headstage amp and DAC anymore (I see listed few...

AD8620 data sheet say minimum voltage is +-5V. However I try in CMoy with single 9V battery, it work. What is your experience with this chip on 1 batt.,how long it work ? Zigis.