I've tried the Mezzabarba MZero a couple of times, any other amps with similar "feedback" functionality?

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Dreamspace

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It is truly an incredible amp, and I've only tried it on low volumes at stores. The one thing that has always impressed me, is the "feedback" control - which literally does just that. Crank it up to 10, and you'll get beautiful controlled feedback jumping out of the amp.

I've tried hundreds of amps, in the 25 years I've played guitar - but I've come across anything like it.
 
The negative feedback control is pretty common on modern amps. Some are on toggles and some are on pots. Off the top of head, my Ground Zero Hellion had one, the Uber Ultra has one, MGL has one on a toggle, the contour knob on Wizard MCII, Fortin amps, etc. Definitely not unique to Mezzabarba amps.
 
Note that a lot of times, manufactures call NFB (what you called "Feedback") control funky names. Friedman BE-50 and BE-100 Deluxe also have NFB called "Response." Carstens Grace "Headroom" knob is NFB. I think on an old 2-Channel Dual Recto if you run the Orange Mode then the presence control on the other channel becomes a NFB control.
 
thegame said:
No matter the setting, the Mezzabarba Apocalypse has a ton of negative feedback
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I’m fucking dead!

hellzington said:
Note that a lot of times, manufactures call NFB (what you called "Feedback") control funky names. Friedman BE-50 and BE-100 Deluxe also have NFB called "Response." Carstens Grace "Headroom" knob is NFB. I think on an old 2-Channel Dual Recto if you run the Orange Mode then the presence control on the other channel becomes a NFB control.
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Well I did NOT know this… I’m gonna try it out
 
I know @RedPlated has done nfb mods on a bunch of amps and could probably add it to the ones you have
 

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I've had a few amps with NFB pots.
Love them. Want to put one on my SLO after hearing it on the MZero.
From lower watt Princeton types to 100 watt monsters, it has a huge effect.
It's like a magic knob to get the right feel, brightness and openess from an amp.
 
BlackMetal said:
The negative feedback control is pretty common on modern amps. Some are on toggles and some are on pots. Off the top of head, my Ground Zero Hellion had one, the Uber Ultra has one, MGL has one on a toggle, the contour knob on Wizard MCII, Fortin amps, etc. Definitely not unique to Mezzabarba amps.
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So I had my Wizard MC inadvertently modded into a MC with added depth control. Hmm. I didn't know that is what the contour was on the MCII.
 
Dreamspace said:
It is truly an incredible amp, and I've only tried it on low volumes at stores. The one thing that has always impressed me, is the "feedback" control - which literally does just that. Crank it up to 10, and you'll get beautiful controlled feedback jumping out of the amp.

I've tried hundreds of amps, in the 25 years I've played guitar - but I've come across anything like it.
Click to expand...
Note that the negative feedback control on the amp has nothing to do with the physical feedback you get between a guitar and an amp. It's adjusting how much negative feedback the power amplifier receives from its own output back to the input.

You may like the effect on the amp's behavior with it dimed (I hate amps w/ too much negative feedback personally) but the control's intent is not related to the kind of feedback you're referring to. If it's helping control the natural physical feedback on the guitar it could be because it's nerfing the power amp's frequency response, etc.
 
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