Built some diyhifisupply monoblock kits.
Got hold of unbuilt kits from 2007-2008 of LD91 mk 2 signature monoblocks (using the 310 pentode as driver).
Great amps and a great match with my Altec 604-8Gs. Better with the Altecs in many ways compared to the Hypex ncore monoblocks I assembled last winter.
Next project will probably be a NOS dac kit.
Regards
Kjartan