Just recently got these 2 pedals, Bad monkey is an overdrive and the Joyo sparrow is a di/overdrive. Loving these 2 pedals,the Joyo sparrow sounds bad with the drive turned all the way up but with the drive backed off a little it does the gritty very slightly overdriven sound very well and really adds some balls to a bass tone, in short it is a great pedal to beef up your basses tone. The Bad monkey is a great overdrive pedal, very popular on bass,gives a nice old school overdriven tone. One thing i have noticed is that it is very sensitive to input volume and initially i was having trouble getting a good tone with some of my higher output basses with this pedal,after backing off the volume control on said basses i was able to dial in a great overdriven tone with ease.The other thing with this pedal is that it does boost your mids and seems to cut the highs a little. Both pedals combined sounds awesome and the Joyo seems to compensate for the boosted mids of the Bad monkey.