Are there passive attenuators that don't zero volume and only offer one input ?
He a shyster ieales, and known all over other forums All you have to do is see how he disowned his own name and product, in the proof I posted up. This was the best one he tried to sell on ebay and diyaudio he called a "Pass Transistor opamps" https://ibb.co/Db3yj9s see the little smd transistor squashed under the opamp with the "snake oil" he tried on https://www.head-fi.org/members/dbxrecord.192735/ Cheers George |
Why an A/C supply when a DC wallwart would keep all hum outtadabox?Because you then avoid the cheap rectification components inside wall warts, all avoided by using a AC 12v supply. Rectification can then be achieved with thyristors, and jfets https://www.stereo.net.au/forums/topic/113297-comparison-lightspeed-diy-ldr-pre-vs-stereo-coffee-diy... |
High quality DC supplies are 10 a penny today.Look inside the plugpack , it explains why they are 10 a penny. "A thyristor is a semiconductor device which can be used to switch current on and off. When used in rectifier circuits, thyristors allow current to be controlled more accurately than diodes, which can only be ON or OFF. A thyristor can be triggered to allow current to pass in a graduated manner, by firing (switching on the thyristor) at a precise time, therefore controlling the conduction angle." https://www.ppi-uk.com/news/thyristor-controlled-rectifiers/ |
