This is the MXR Silicon Fuzz by Dunlop. It works fantastic in my rig. My pedal board contains of a TS-9 by Ibanez, and a Vox wah, Specifically the Vox V847-a Wah.
The Fuzz works and sounds amazing by itself straight into my JTM-45. It really "biggens" the tone, in a very crazy way. The fuzz sound itself is not metallic or shrill sounding, but it is very very fat. It sounds almost like a distortion pedal when the fuzz is the only pedal engaged. The trick with this pedal (for me) is to use it with a mid-boosting overdrive pedal; the TS-9 works great for mid-boosting. When you have both the Fuzz and the TS-9 on you can get a really full killer lead tone. I have the "buffer" switch on because it sounds a little too "sputty" without it engaged.
Build quality is really heavy duty and really feels like you're holding quality.
I would recommend the Fulltone 70-BC Fuzz if you dont have mid-boosting overdrive at hand. That mid-boost is crucial if you want to play lead and cut trough the mix.
Product quality is good. Buffer will help if you have wah pedal in front. Buffer will change the sound to cut thru more and somewhat more edgy. It is a matter of taste but I found that softer germanium fuzz was more pleasing to my ears.
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