BTW. For people asking me about Sontec schematics, BOM, etc.
There was whole thread which (seems so) was deleted or gone due to other unknown reasons.
Anyway, schem, photos, etc:
http://i251.photobucket.com/albums/gg291/diy33609/fr_small.jpg
http://i251.photobucket.com/albums/gg291/diy33609/P1020023.jpg
http://i251.photobucket.com/albums/gg291/diy33609/P1020025.jpg
http://i251.photobucket.com/albums/gg291/diy33609/P1020026.jpg
http://i251.photobucket.com/albums/gg291/diy33609/P1020027.jpg
http://i251.photobucket.com/albums/gg291/diy33609/P1020029.jpg
http://i251.photobucket.com/albums/gg291/diy33609/P1020031.jpg
http://i251.photobucket.com/albums/gg291/diy33609/schem_upd-1.jpg
http://i251.photobucket.com/albums/gg291/diy33609/schem_upd.gif
http://i251.photobucket.com/albums/gg291/diy33609/pcb_io.gif
http://i251.photobucket.com/albums/gg291/diy33609/pcb_filt.gif
http://i251.photobucket.com/albums/gg291/diy33609/sum_amp.jpg
http://i251.photobucket.com/albums/gg291/diy33609/filters.jpg
http://i251.photobucket.com/albums/gg291/diy33609/sontec_1ru.gif
http://i251.photobucket.com/albums/gg291/diy33609/pcbs.jpg
Power Supply:
http://i251.photobucket.com/albums/gg291/diy33609/P1000010.jpg
http://i251.photobucket.com/albums/gg291/diy33609/ps_pcb.jpg
http://i251.photobucket.com/albums/gg291/diy33609/ps_sch.jpg