Joyo Technology specializes in R&D, manufacturing and marketing
digital products for music education. Its products include effects pedals, guitar amplifiers, tube amplifiers, metronomes, tuners, EQ systems, power supplies and various accessories.
In an appeal to the two-for-one shopper, Joyo’s JF-18R adds eight 9V DC outputs to a fairly basic tuner with decent specs. Forget about calibration and other features you’d expect from an ordinary tuner at this price.
Joyo’s mini tuner is very small (only Hotone’s Skyline Tuner is smaller), solid and basic. It offers excellent detection accuracy, true bypass and a somewhat useless flip-top lid.
Contrary to Internet lore, Joyo’s JT-305 is not a clone of or identical to Korg’s Pitchblack tuner. And while they are quite similar, the Pitchblack offers better low-end note detection and a three-year warranty.