First the great ones:
MODWRIGHT: infinite patience helping me solve a problem with my MW-modded Sony HAP music server, including sending me power supplies.
MAKER AUDIO: Received the amp not working, likely due to shipper mishandling. I sent it back and (even though it was bought as last year’s demo) he updated to latest specs at no cost and paid return shipping.
AURALIC: Sent me new transformers at no cost, even though bought used.
EXOGAL: sent me a new after-market power cable when the one I was using failed.
AUDIENCE: Re-terminated all ends when I broke the cable near one end.
WYWIRES: exchanged my two power cords that weren’t working for pair of interconnects, and then upgraded to next level when they inadvertently took too long to ship.
TACT AUDIO: Spent many hours on phone helping/teaching me subtleties of using their products. Too bad they went under.
GIK: Immediately sent replacement product when I complained the finish of something I’d received wasn’t up to snuff, and let me keep the original.
The not-so-good (surprisingly, mostly cable companies): NORDOST: A Glass Toslink stopped working due to no fault of mine and their response was that they had lots of problems with their Toslink cables so they stopped making them. They offered no compensation and wouldn’t fix it.
BEL CANTO: Amp died one week out of warranty. Wouldn’t fix it--only offered to sell me a newer model at a discount. REVELATION AUDIO LABS: Took close to a year and filing complaints with state agencies to get product I’d paid for. MIT: An expensive digital cable stopped working and neither the company nor their well-known dealer offered to fix it.