X

You may be familiar with the Albini mix of HSB. If not, you'll want to go listen to it before continuing.

Kurt and Krist had a difference of opinion over the effect heard on the guitar solo and eventually Kurt conceded and removed it, however it was his original vision.

I fell short in my attempts to recreate this tone live in my tribute band and subsequently researched as much as I could about the original Pedal X, as designed by Mr Bill. 

After countless hours scouring ring mod schematics and listening to demos, I experimented with an alternate tremolo based topology and liked what I had. 

While X is NOT a clone by any means, I think it's an excellent dirty tremolo ring mod-ish thing, that well cops that solo tone.

Place X last in the signal chain before the amp. The more effect you blend in, the more level you'll want to use, as perceived output will decrease. 

Subtle goes from a pulsing tremolo to a vibrato like warble. Bold will take you to extreme ring mod-ish type sounds. 

You'll use level to compensate and plenty of boost is available to reach unity for any choice. 

You may use 18V for increased headroom, but no more.  Permanent damage will occur.

•True Bypass 
•9-18V 2.1mm DC Center Negative Max