are there copyright problems here?
Doubtful. Consumers are unlikely to confuse one for the other. Neither HP or PS Audio is going to send the other a cease and desist.
Need a Sprout to feed your Sprout?
I have a G & L Nighthawk guitar, one of only a few made under that name. Gretch, who marketed a Nighthawk drum set, took issue with the guitar’s name. I keep wishing that it will be worth a lot of money as one of Leo Fender’s rarer creations, if in name only, but that just hasn’t happened yet.
Elk said Doubtful. Consumers are unlikely to confuse one for the other. Neither HP or PS Audio is going to send the other a cease and desist.+1. Incidentally it would be a trademark issue, not copyright. I didn't check but HP and/or PSA would have had to file a federal registration on "Sprout" to begin with in order to allege any infringement...even so although both are electronics any registration would be in typically in two very distinct trademark classes.
We had our attorney look into it and there’s no conflict. But thanks for watching our backs.