IMPORTANT (with PICS illustrating): Since Biyang discontinued their DS-8 Mouse (from the Tonefancier series) and obviously companies like GFS and Eagletone stopped them too, I suddenly wanted one, knowing that it was a confirmed Rat clone. I have to say that I was VERY curious as to why so many owners of the Brownie/Mouse/DS-8 didn't think it sounded all that great. Well, I got my better half to score one of the remaining "mice" for me for Xmas. I've been holding off from posting my thoughts about it, because I also noticed that "something was wrong." It has a nice, tight, punchy quality with midrange by the boatload, but it didn't have the girth or gonads that a good Rat has. When I rolled down the guitar's volume or cut the gain/dist on the pedal, it sounded like a cocked wah pedal in a really bad way. Well, I had to know what wasn't quite right, and I wanted to confirm that the Mouse also has the LM308N chip from the factory, which it does. Upon disassembling it, I started looking for some sort of smoking gun. In the event there were numerous variations to the actual original Rat circuit, I was prepared to make whatever tweaks necessary. The first thing I do with ANY Rat pedal is measure a pair of caps and resistors to see how close to "factory spec" they are, because they determine much of the EQ character. ...Lo and behold, Biyang substituted a whopping 56K ohm resistor where the Rat uses a tiny 560 ohm resistor. The 10 to the 2nd power difference is MONUMENTAL - it sucks all the life out of the Biyang clone, and it actually makes any filtering at that frequency to be nonexistent (in stock form, the filter goes well into the bass range anyway). So, after changing ONE FREAKING RESISTOR, this pedal sounds absolutely on par with some of the best Rats that I've used/tried/built. It will do the girthy fuzz thing, it will do the tight distortion thing, and it will get that wonderful light breakup tone that Scofield and Frisell employ so masterfully. What's not to like? And when I say it NOW sounds good, I mean REALLY good. The Turbo Rat mode is equally as impressive. This thing will run rings around ANY OCD, Crunchbox, or any of those "improvements" to the Rat. Long live the rodent king! IMO, of course... I installed a green LED to go with the really cool chrome plated box, and this thing is QUICKLY going on my pedalboard. BTW - if anyone wants to dissasemble theirs (or any of the other Biyang Tonefancier/GFS/Eagletone/etc. line), you will need a 2.5mm and a 1.5mm metric allen wrench to get off the box top nuts and chicken head knob setscrews. That is a nice touch (if a bit inconvenient), as it really holds things down well. Pics follow of the offending resistor to be swapped. Its number designation on the PCB is blocked, so I took a bunch of pics and highlighted it. I also have pics of the LM308N chip, the "fancy box metal caps," and two shots of the pedal exterior with the green LED installed. Oh - I used a 680 ohm resistor instead of 560 ohm. A 820 ohm would probably be okay, too. You could even "piggyback" a pair of 1K resistors in parallel, for 500 ohms, and that would be fine, too IMO.