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The Sushi Box FX Secret Society

With a stock 12AU7 where on the Gain knob would it start to break up with a P bass? I definitely want some grit.
I'm still undecided between the Finally and the Slampegg
Too many variables to tell you. How hot are the pickups? How close are they to the strings? Active? Passive? What do you play like? My suggestion is to order it normal with a 12ax7. Then if you think it's too crunchy/hairy/fuzzy/drivey for you order a 12au7 and swap them. You're out an extra 20-35 bucks b but you now have a pedal that can do the clean to mild stuff or get adjusted to go mild to hefty.
 
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Too many variables to tell you. How hot are the pickups? How close are they to the strings? Active? Passive? What do you play like? My suggestion is to order it normal with a 12ax7. Then if you think it's too crunchy/hairy/fuzzy/drivey for you order a 12au7 and swap them. You're out an extra 20-35 bucks b but you now have a pedal that can do the clean to mild stuff or get adjusted to go mild to hefty.
Just regular passive P basses, normal pickup height, normal output, finger plucking between the pickup and the fretboard.
I wish it was possible to order a Finally with a 12AX7. ATM it ships with a 12AU7 only.
 
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Just regular passive P basses, normal pickup height, normal output, finger plucking between the pickup and the fretboard.
I wish it was possible to order a Finally with a 12AX7. ATM it ships with a 12AU7 only.
Add a note on checkout requesting it. I'm a reasonably accommodating person.
 
Valve comparison.png
 
Question on the 12au7 tube in a Finally. I know it has lower gain. So, if I’m understanding right, if I’m slight breakup about 9 o’clock with 12ax7, it would hit the same further around at maybe 3 or 4 o’clock? Is there a difference in the character of the breakup or the tone with the 12au7 prior to and at breakup? Differences in how it affects the volume?

Thinking about rolling in a 12au7 for use with my active bass and keeping the 12ax7 for when I use my passive bass. Thinking I’m hitting breakup earlier now partly due to my active bass preamp. In the end it’s fine, but will be fun to experiment.
 
Question on the 12au7 tube in a Finally. I know it has lower gain. So, if I’m understanding right, if I’m slight breakup about 10 o’clock with 12ax7, it would hit the same further around at maybe 3 or 4 o’clock? Is there a difference in the character of the breakup or the tone with the 12au7 prior to and at breakup? Differences in how it affects the volume?
Depending on your pickups and what else is in the chain, it can be possible to have a Finally with a 12AU7 fully cranked and still not breakup. It will be very loud at that point, but clean.

When it does breakup, the tone will be very different. There's a very good reason we use higher gain tubes for distortion instead of just low gain tubes biased such that they distort at the same point. In my opinion 12AU7 has a rather unpleasant drive character, it doesn't give the smoothness we expect from tube drives. 12AT7 is much better and the breakup is very similar to a 12AX7.
 
Depending on your pickups and what else is in the chain, it can be possible to have a Finally with a 12AU7 fully cranked and still not breakup. It will be very loud at that point, but clean.

When it does breakup, the tone will be very different. There's a very good reason we use higher gain tubes for distortion instead of just low gain tubes biased such that they distort at the same point. In my opinion 12AU7 has a rather unpleasant drive character, it doesn't give the smoothness we expect from tube drives. 12AT7 is much better and the breakup is very similar to a 12AX7.

Thanks, good to know. I’ll stick with the 12ax7.
 
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Question on the 12au7 tube in a Finally. I know it has lower gain. So, if I’m understanding right, if I’m slight breakup about 9 o’clock with 12ax7, it would hit the same further around at maybe 3 or 4 o’clock? Is there a difference in the character of the breakup or the tone with the 12au7 prior to and at breakup? Differences in how it affects the volume?

Thinking about rolling in a 12au7 for use with my active bass and keeping the 12ax7 for when I use my passive bass. Thinking I’m hitting breakup earlier now partly due to my active bass preamp. In the end it’s fine, but will be fun to experiment.

Depending on your pickups and what else is in the chain, it can be possible to have a Finally with a 12AU7 fully cranked and still not breakup. It will be very loud at that point, but clean.

When it does breakup, the tone will be very different. There's a very good reason we use higher gain tubes for distortion instead of just low gain tubes biased such that they distort at the same point. In my opinion 12AU7 has a rather unpleasant drive character, it doesn't give the smoothness we expect from tube drives. 12AT7 is much better and the breakup is very similar to a 12AX7.

I am running a 12AT7 with my active bass in a Finally V1. I can get edge of break up with a light touch with the knobs at noon.
 
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