So I used a Behringer GDI21 (Tech 21 GT2 clone) for my high gain distortion in the California setting, with some cleans blended in at about a 50/50 mix ratio from my Boss LS-2, and it was pretty good and gave me a usable high gain tone for my bass, but I then decided to try out my Boss MT-2 Metal Zone anyway, and actually got a pretty good distortion tone with the Drive knob all the way down, the High knob at about 11 o'clock and the Low knob at about 10,5 o'clock, Mid Freq at about 9 o'clock and Mids at about 2 o'clock. Not sure if it was actually better than what the Behringer gave me, but it was usable as well, a bit more griddy and lower gain compared to the more fuzzy sound of the GDI21 in the California settings, which was a bit of a surprise coming from a Metal Zone, but apparently how it sounds with the gain all the way down, at higher Drive settings the usual Metal Zone fizzy high frequency buzz started to kick in badly though. But then by accident I switched on the Joyo Orange Juice in front of it, which was set with it's traditional Tone knob at about 1,5 o'clock cutting the lows slightly, the Voice knob set to boost the upper mid frequencies around the 800Hz area to about 3 o'clock, and the Drive set to about 9 o'clock, used for a grinding clanky sort of lower medium gain overdrive, and the result of it boosting the Metal Zone was just about perfect. Actually a quite defined high gain distortion tone, with kind of a griddy and slightly crunchy character that you normally wouldn't be able to get from a Metal Zone alone, and also without any of the Metal Zone's usual really fizzy and buzzy highs, mostly distorting the upper mids of my signal, for my mixed in clean bass signals lows to come through nicely, but without the distortion for that reason sounding thin or like laying on top of the clean signal, on the contrary it sounded quite punchy, even ballsy, and the distorted and clean signal seemed to mix perfectly without any mud or too much high frequency fizz. Definitely pleasantly surprised by the outcome of this experiment. Really liked how it sounded with the mixed in clean signal from my bass, and I think my high gain distortion search for my bass might be over. This sounds nothing like my distortion tone, and no cleans blended in either, but this guy actually manage to get a really nice distortion tone out of his Metal Zone used with bass as well: All in all the Metal Zone is not at all as bad a pedal as it's general reputation has it, it's just extremely easy to get to sound really bad due to it's very powerful and touchy EQ section, where even small adjustments makes a relatively big impact on the distorted tone that comes out of it.