4 ms·I love this, especially the sound the solenoids make when hitting notes. Well done!by StavrosK 6y agoI love this, especially the sound the solenoids make when hitting notes. Well done!nik12795 6y agoSuper satisfying right?!StavrosK 6y agoSO satisfying! I'm going to make one for my keyboard and drive my wife insane.nik12795 6y agoLol she’ll love that