mellow and soft sounding audio transformer

The Kludge Audio 510 Transwarmer is a mellow and soft sounding audio transformer with all associated parts needed to make it work. You just
drop it into your 500-series rack or console and apply signal, no need to
worry about matching impedances or loads.

The transformer used is specially designed to match the sound of a classic model that we liked the sound of, but built with modern materials to make it much more
convenient, reliable, and affordable than the original.

https://kludgeaudio.com/?p=77

This Module is currently available.