Electro Harmonix Bass Micro Synthesizer XO Analog Synthesizer (XOBASSMICROSYNTH)
Modify your guitar's tone with the range of effects offered by this Electro-Harmonix Bass Microsynth analog synthesizer's suboctave, original, octave and square wave settings and rate adjustment funct...
Pros: Awesome analogue sound, lots of possibilities.
Cons: Fragile, some parts may break. SMT board is impossible to repair at home.