Get a load of this Deceptive add for a Gryphon Amp here on AG

Gryphon and Accuphase I can GUARANTEE wont work on Grey Market Units as per their distributors. This is to protect the distributors business model. If you can buy Amps/Speakers from any country without consequences then everybody would be buying them from Europe/Asia where many of the brands are MUCH cheaper. Speakers in particular have no Voltage settings obviously. Accuphase gear costs like 50% of the USA price in Japan (Audio Union etc).   Rules are in place to safeguard/discourage that kind of thing from happening.

I agree...as they say put on your big boy pants  and move on...geeez,grow some dude

I got a Gryphon Callisto 2200 integrated amplifier with 230v. I got it before Gryphon Audio Designs started selling their products here in the US a few years ago.
I want the power voltage changed to 110-120v. Any ideas what/where I should go with this amp. I am the second owner. I tested the amp at our garage which carries a 240v line and it works.
I've read the discussion above and it somehow rekindled this idea that the voltage can be changed.
My gratitude to all that help.

I just don't see the issue here.  Although he certainly could have, and perhaps should have made that disclosure in the text of the ad, he has an excellent track record here, and made full disclosure of those issues in his confirming message.  Plus, is it a big deal (I don't know) that the voltage was changed to 120?  Many amps can be changed internally from one voltage to the other, so that doesn't seem like much of a big deal either, although perhaps it is more involved with Gryphon amps.  As for the warranty issue, from the comments above, it seems like Gryphon does not have a transferable warranty, period, so although it is important to disclose that, it does not seem to be tied to the "gray market" issue.

OP states ad was deceptive, later on the term shady was used. While original ad may have left pertinent information out, I still wouldn't call it deceptive or shady. A single email brought about full disclosure, the OP is out a single email. You should have private emailed seller about amending his original ad. no need to make this mix up public, the seller has good track record here. I've had any number of mix ups similar to this over many years, honest people sometimes make mistakes. If seller had no track record, I could more understand the public announcement.

As for converting 230v to US voltage, it's possible power transformer has multiple taps. Otherwise new US spec transformer or step down transformer (least preferable). And yes, these are grey market units, less value, no warranty and may be difficult to service here. But if no transferable warranty issue moot. Non-transferable warranty is an issue with me, whats the deal here! This is a business model offering only disincentive to purchase used, and brings into question long term reliability of their equipment. Why won't they stand by warranty regardless of owner, do they rate owners based on some investigation.