The Katana Go was discontinued shortly after its release - some chip shortage that they wouldn’t have been able to replace. From what I’ve seen (which the post linked below supports) they do expect to bring it back, but had to do some significant work to replace the part(s) that couldn’t be sourced. It’s a shame because it’s one of the more interesting headphone amps, I was ready to order one when they went out of stock everywhere suddenly and decided to hold off in case there were any support issues with the ones that did make it out.
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