Electro-Harmonix always has something new up its sleeve. Each of this particular trio, released in the latter half of 2019, represents a particular strand of EHXs extensive catalogue. The Mod 11 follows the tradition set by the Canyon Delay and the Oceans 11 Reverb, both of which provide 11 distinct variations on their nominative effect chosen from a rotary switch. It was inevitable there would be a modulation variation at some point. The Bass9 is the latest 9-series pedal following on from the B9, C9, Key9, Synth9 and Mel9 pedals, which all endow your guitar with the sound of nine variations of a particular genre of keyboard instrument. Interestingly, this one provides a mixture of bass guitar sounds as well as bass keyboards. Finally, the Operation Overlord is the latest instance of a pedal initially released in a larger format, now shrunk down to a more pedalboard-friendly Nano size. None of the three nine-volt pedals support battery power, but they do include an adaptor as part of the package.