I understand the new Air Tight ATH-2 Moving Coil Step-up Transformer is excellent, unfortunately I have not heard one.
I have provided a link to Axiss web site containing a short description and photo.
http://www.axiss-usa.com/AirTight.html
I have provided a link to Axiss web site containing a short description and photo.
http://www.axiss-usa.com/AirTight.html