Trade "print" media with an online presence. Online media that doesn't sell all their pixels to Google? Radio, depending on your audience and required reach? Forums specific to your audience that don't sell all their pixels to Google. Podcasts. Submarine articles in the trades? Open source ad networks that don't embed insanity or real-time bidding?
Mostly, I would try to target your initial audience as precisely as possible where they live, rather than with a wide net. Perhaps a Google search returns results for top websites dealing with your product - if they are not vendors, then perhaps you advertise on that site?
Disclaimer: I'm not a growth hacker, but I've thought about these things and run a couple of poor Facebook campaigns for a brick and mortar business.
Trade "print" media with an online presence. Online media that doesn't sell all their pixels to Google? Radio, depending on your audience and required reach? Forums specific to your audience that don't sell all their pixels to Google. Podcasts. Submarine articles in the trades? Open source ad networks that don't embed insanity or real-time bidding?
Mostly, I would try to target your initial audience as precisely as possible where they live, rather than with a wide net. Perhaps a Google search returns results for top websites dealing with your product - if they are not vendors, then perhaps you advertise on that site?
Disclaimer: I'm not a growth hacker, but I've thought about these things and run a couple of poor Facebook campaigns for a brick and mortar business.