Real owners lean toward the Boss Katana 50 Gen 3: 65% of 625 owners recommend it, vs 53% of 85 for the Positive Grid Spark 2.
Verdicts aggregated from Reddit, enthusiast forums, and YouTube owner comments — affiliate reviews excluded. Sample sizes differ; judge accordingly. How we score
Buyers weighing the Katana 50 Gen 3 against the Positive Grid Spark 2 are choosing between two deep-tone practice amps whose owners both accept some tweaking to get the best out of them. Katana owners praise its value, its great cleans and models, an effects stack that replaces many pedals, and a tube-like feel, with gripes about underwhelming stock tones, an unintuitive editing interface, and a processed edge versus tube amps. Spark 2 owners love its enormous app-driven tone range, easy AI-assisted tone creation, and the all-in-one package of looper, Bluetooth speaker, and battery power, but a notable minority report a buggy app and firmware, hardware failures like volume dropping out or dead units, and bass-heavy stock tones that need EQ. A guitarist who wants a self-contained amp with strong effects and less app dependence leans Katana; a home player who wants app-driven tones, backing tracks, and portable battery power leans Spark 2. The choice hinges on how much you want to lean on a phone app and whether the reliability reports give you pause.
“This amp is a no brainer. Cheap and delivering a great sound and loaded with features.”— @088Noir on YouTube
“Told my parents i wanted world peace for christams, but if i couldn't get that, Id want the amp instead lol”— @jakerobertson5198 on YouTube
“now it has a wool blanket thrown over it”— @ReductioAdAbsurdum on YouTube
“The Spark wins all around. Sonically, functionally, the form, the support... the whole ecosystem just works.”— @ArmandoVegaTV on YouTube
“One can not describe the enormous sound of the Spark without being in the room with it, very amazing, I have let a lot players hear mine and they are genuinely impressed once they hear it in person.”— @RandyRocker56 on YouTube
“the Spark 2 which had many issues that were eventually fixed through firmware updates... it clearly wasn't ready for prime time when it first rolled out their doors”— SherbetUnusual199 on Reddit
Buyers weighing the Katana 50 Gen 3 against the Positive Grid Spark 2 are choosing between two deep-tone practice amps whose owners both accept some tweaking to get the best out of them. Katana owners praise its value, its great cleans and models, an effects stack that replaces many pedals, and a tube-like feel, with gripes about underwhelming stock tones, an unintuitive editing interface, and a processed edge versus tube amps. Spark 2 owners love its enormous app-driven tone range, easy AI-assisted tone creation, and the all-in-one package of looper, Bluetooth speaker, and battery power, but a notable minority report a buggy app and firmware, hardware failures like volume dropping out or dead units, and bass-heavy stock tones that need EQ. A guitarist who wants a self-contained amp with strong effects and less app dependence leans Katana; a home player who wants app-driven tones, backing tracks, and portable battery power leans Spark 2. The choice hinges on how much you want to lean on a phone app and whether the reliability reports give you pause.
Owners point the Boss Katana 50 Gen 3 at budget players wanting the best value amp, and bedroom and jamming players at variable wattage.
Owners point the Positive Grid Spark 2 at home practice players wanting endless app-driven tones, and beginners learning with backing tracks and a looper.
The most-cited downside of the Boss Katana 50 Gen 3 is default and out-of-box tones can underwhelm until dialed in. For the Positive Grid Spark 2, it's buggy app and firmware, including the AI sometimes failing to load.