I do not know who the seller is. Whoever it was did not contact me before linking his or her listing to this website.
The standpoint of this site is that Hilgen amplifiers are not commodities. They are examples of Jack Gentul's unique approach to the design and construction of sound amplifiers. I have created this site as a means to distribute (and acquire) greater knowledge of the history of Hilgen amplifiers and their intended circuit designs. Other than the practical fact that I have to pay money to acquire them for electro-archaeological study, whether a Hilgen amp has any particular monetary value is of no concern to me. Hilgen amplifiers are musical instruments in their own right that deserve to be played, heard, repaired, and preserved.
I cannot control what use people make of this site. However, I want to make clear that this site is not intended to promote sales of Hilgen amplifiers or to enhance their market value. It is intended to promote appreciation for them as works of art and science and to honor the man who envisioned them, Jack Gentul. Please do not use the information on this site for personal gain.