A Line-stage With Output Transformer (WOT) was built back in 1998, a single 5687 tube per channel with output transformer (OPT).
However I failed to get rid of noise (EM pick-up and attenuator switching noise). I lacked the expertise to optimise Grounding and to shield and/or orientate the output transformers (OPTs) properly.
Now, I have been fortunate to acquire a pair of Tango NP-126 Line Output transformers. So, I must re-visit the WOT Line-stage. Continue reading