Beautiful monoblocks. You will find that considerable tuning of the 2nd harmonic is possible with the X-pot. Although I have settles to listening with the X-pot adjusted as per the build guide.
Here are some interior pictures, I settled for the build guide recommended X-pot setting as I am experimenting with some tube preamp topologies at the moment.
There is a relais start up board, and speaker protection as I had a some startup peak at the speaker.
There is a safety mistake in the last picture which is corrected 😉
I had LT4320 based rectifiers at one point working but they gave me some oscillation and at one point one of the 4 broke, so I replaced them with conventional diode rectifiers
