I have a beautiful Quicksilver full function preamplifier that I have sold twice via Audiogon and which came back to me twice, both times because boutique capacitors that I had installed as very effective tweaks, to the benefit of the recipient, broke loose in shipping. But I viewed these incidents as my fault for not having properly secured the capacitor bodies prior to shipping. I’ve re-installed the OEM capacitors, but I’m now apprehensive about shipping it again, though I do not blame the carrier. It’s such a good sounding unit that I can justify keeping it for back-up, but it should be being used and enjoyed. Other than those incidents, I have never had a problem either sending or receiving audio electronics.
@lewm Yep at some threshold of capacitor size, they need to be strapped or bolted down (hot glue strikes me as too sloppy). The ARC Reference 6 / 6SE output caps (x4) are about at that point, but rather than strapping down they elected to dampen mechanical shock with foam inserted above and below the capacitors (axial leads). You only insert the foam for shipping, and remove before use. Always thought that was weird, but haven’t heard of any issues in transit I guess.