Over the last year I also built the Amp Camp Amp kit. It's fun-value and performance were so good I immediately moved on and built the B1 Korg preamp kit. That was before they had a full kit available for the B1K, but they now have a complete kit similar ACA kit. I also added an internal LPS to the B1K along with improved Caps and other components.
I then took the next step and built an F5 amp using the Pass Linear PS boards and the PCB and parts kits available for the build from DIYAudio. I am extremely impressed with the performance of these relatively simple amp designs. And the cost/performance factor is unequaled IMHO. It ain't like falling off a long to do this, especially the F5 build, but that's the challenging fun part. I highly recommend this experience.
I then took the next step and built an F5 amp using the Pass Linear PS boards and the PCB and parts kits available for the build from DIYAudio. I am extremely impressed with the performance of these relatively simple amp designs. And the cost/performance factor is unequaled IMHO. It ain't like falling off a long to do this, especially the F5 build, but that's the challenging fun part. I highly recommend this experience.