Ypsilon Electronics was a new name to me, so I wasn't sure what Jon Iverson and I would see when we entered its room. Whatever we expected, it wasn't the ginormous hybrid SET-100 monoblock amplifiers ($69,000/pair).
Ypsilon believes that single-ended is better, so the 120W SET-100 is a hybrid single-ended power amplifier. It uses 8830 tubes in the input stage.
Ypsilon has been in business in Greece for about 15 years, but this is the first time it has shown its wares in the US. The $69,000 price actually, was quoted as "€53,000, tax included." Shipping is not, presumably.