[quote name='longtimefred' timestamp='1475755209' post='3148473']
trying not be an arse but how can you say its not necessary? It all depends on what you play and how you create your bass lines. I can think of loads of uses for switching drives with the style and songs i write with my band and loads of uses for it for tracks i have already written that i could back track on. Its all about flexibility for me. My B7K is my permanently on sound and it cranked as well, it would be ace to be able to change the drive from my standard raging one to a more valve overdrive for different sections / solos / dynamics etc.
i get why they did not put it on, to save on different cables / cost n stuff, its just a shame to not have the flexibility as it would be a proper swiss army knife then.
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Check my original post, I said for ME it won't be an issue. I understand some will want to change voices mid song. I have never done this, I will switch on another drive pedal or something to change sounds mid song, I wouldn't try and adjust the pedal already on. This is the same for me.
Chances are, the settings used on the B3K voicing won't be the same settings you use on the Vintage voicing (this is absolutely true for me) and as such simply switching voices won't be enough, I would need to change the blend, gain, level and tone as well. I just personally would never be in a situation where changing the voice on the amp would not be practical.