ground lift

Hello, First time poster with a Pro Audio question, but first a little intro to myself. I have been a daily "lurker" at ASR for over 2 years, but this is my very first post as an official registered member. Came here originally for find a DAC recommendation and eventually bought the Topping...

Almost a year ago I posted this short IMD comparison of various transformers in a iso box review by @amirm, and promised that I'll try to follow up with a more detailed post. This will be it. :) A few different types of devices will be measured and compared, here's a list of units under test...