Well I have a Threshold Stasis 3 that I'd consider selling, but I don't know what's needed to get it wired for 230v, and as it's a Class-A design, it weighs a ton, so shipping it to Italy would likely be cost prohibitive.
I didn't mention it originally, because you mentioned you were looking for a DIY, and didn't mention that you were looking for a Class-A amplifier.