Underwood HiFi mod for the M. F. Tri-Vista 21 DAC


I see that Underwood HiFi is offering a mod for the Musical Fidelity Tri-Vista 21 Dac. It's $990.00. Has anyone had their Tri-Vista 21 modded by Underwood HiFi, or heard a Tri-Vista that has been modified by them, or anyone else?
krell_man