Mapletree Super Stealth Monobloc

Anyone have any experience with Dr. Lloyd Peppard's monobloc? I'm considering putting together a system around the Lloyd's super stealth monoblocs and his Ultra 4A SE Phono/Line Preamplifier.

I have Totem Arro's now but are considering upgrading to Harbeth Super HL5 or perhaps the new Thiel CS3.7. Will have to listen to both, but for now will keep the Arro's as I like them.

I have his Ear + Purist HD100 headphone amplifier and absolutely love it. The finest headphone amp I've ever heard.

I'd appreciate any thoughts and/or comments.

Thanks and Happy New Year!