ARC D400 vs D400 MkII

@hiendmmoe

Yes thanks, I am aware of this. The oem 67000uF main filter caps are no longer available. Same story with the D240 MkII. The D200 & D300 are still serviceable, i believe, but I’ve read that they use a different (sonically inferior) circuit design.

I’d considered looking at an SD135 or HD220, but apparently their Thermaltrak trannies had a defect that can sent the unit into thermal shutdown.

And even if I was inclined toward an older class D amp (I’m not), the DS series amps can’t be serviced due to the unavailability of their Tripath class D modules.

ARC solid state looks like a bloody orphanage lol.

Fortunately the caps in my amp tested at spec when I bought it, and I read in another thread that a guy had had good luck with aftermarket caps installed by an independent tech. So there’s that.

hiendmmoe

Audio Research has discontinued support and repair for all D series solid state amplifiers. Can’t get parts to fix them.

That is not true. There are some D series amplifiers it can't repair, along with a few other models it's made over the years, but it's not the entire series. The list of products is on its website.

Just a heads up. Audio Research has discontinued support and repair for all D series solid state amplifiers. Can’t get parts to fix them.

Yup… Chirping crickets was about what I expected. Was worth a shot, though.