Wow!
I'm probably a couple years behind the power curve but I built a SEX amp a few years back. Haven't fiddled with my stereos for a LONG time but have a renewed interest ever since I built up a couple of Raspberry Pi Squeezeboxes with a HiFiMeDIY Sabre USB DAC.
Decided to take the SEX amp to work with a Raspberry Pi system and figured, what the heck? Why not go ahead and do the C4S upgrade.
Upgrade was straight forward and took about 2-3 hours. Worked first time right out of the chute. Very easy even though the manual had a couple mistakes in it. I clued in on it right away and sure enough found the errata here on this site. It may have been on the CD supplied with the kit, I don't know I just grabbed the manual file and threw it on my laptop. If there was something else there I overlooked it. No harm, no foul.
Anyway I'm only about an hour into the run and it's awesome with a capital A. I had listened to the SEX amp about a week ago for a couple days while I made things right with my Extended Foreplay 3.
I'm used to listening to my Paramours and Foreplay 2 and don't ask me why but I like the Foreplay 2 with the Paramours better than the Foreplay 3.
The SEX Amp doesn't get as loud as the Paramours but it gets plenty loud enough. I have it connected to the SEXy speakers I built as per the Bottlehead site. Also have that 10K gain box as well.
My source is Raspberry Pi and above mentioned DAC. Listening to Diana Krall streaming on MOG and it's as smooth as the Paramours and full of detail. I'll do a little tube rolling this weekend as I recall I have a few different brands of 6DN7.
As always Bottlehead is QUALITY gear that rivals and surpasses big buck gear in the big buck stores.
I can't believe what I'm hearing . This kicks ass. And I had forgotten what a cool hobby it was building and tweaking gear. Off to the Products page I guess.
Thanks Doc and Eileen.
John