I picked this up to practice with, and it works flawlessly with my Apogee Jam - which, incidentally, works really well with my mac to boot. Theres not much in the way of hiss, so if youre used to headphone amps this will be a pleasant surprise. Its not jam-packed with all the latest features, but its well-thought and does what it does very well.
Id love to see a delay and a distortion effect - Ive had no luck overdriving the amp to get more than a modest tweak to my crunchiness.
Mon-J about PocketGK - Bass Guitar Amp