I've just been playing around with the overdrive on the rumble. It's infinitely better than on my previous amp (GK Backline 600). Even full on it still maintains a wealth of bass. So many overdrives I've tried end up making you sound like a slightly deep guitar.
I can see me using a bit of overdrive in my tone settings quite a lot.
I was also using a Backline 600 as my previous amp. The overdrive on the Rumble totally retains the low end and is so much more dynamic, it reacts more to your playing, while the BL600 just kinda sits there making noise. The Rumble's overdrive certainly comes in handy.

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