I have a very stable regulated HTR-PSU now. I currently have two input modules, a master module and one aux master module. These modules eat some 2.1A.
When I apply a signal to the modules and set all faders to get +4 dBu the THD+N is at 0.023% (measured with Neutrik Minilyzer), the noise floor with no signal at the input is at -87 dBu which is good for my test bench wiring. I've tested Carnhill and Sowter output transformers, the Carnhills are 5-6 dB noisier than the Sowters, certainly due to the fact that they are uncanned/not shielded.
When I apply a signal to the modules and set all faders to get +4 dBu the THD+N is at 0.023% (measured with Neutrik Minilyzer), the noise floor with no signal at the input is at -87 dBu which is good for my test bench wiring. I've tested Carnhill and Sowter output transformers, the Carnhills are 5-6 dB noisier than the Sowters, certainly due to the fact that they are uncanned/not shielded.