Adey 3 Posted November 5 (edited) Hello guys, I bought a DIY fuzz today in a s/h shop for £20 (well I part-exchanged it for a Bad Monkey + £5). Ive got it home, opened it up and there are 3 components marked Mullard OC84. I googled it and its coming up with a Tonebender? It has mkII written on the front in sharpie also. Is this a TB mkII clone, or maybe something else? Can anyone tell by looking if its tip negative or positive please? Thanks 👍 Edited November 5 by Adey Quote Share this post Link to post Share on other sites
Phil O'Keefe 10,705 Posted November 5 Looks like it is point to point and hand made. Most likely a MkII Tonebender clone. I don’t see a charge pump, so it probably uses standard Tonebender wiring... but I can’t guarantee that without a better look at the circuit, which is largely blocked by the stuff (non-shrunk heat shrink tubing?) over the transistors. Nice score - how does it sound? Quote Share this post Link to post Share on other sites
Adey 3 Posted November 5 (edited) My bad Phil. Ive updated my post with 2 more pics. That one shows all components as far as I can tell. Thanks Edit - Ive not tried it with my rig yet. But in the shop I tested it on an old Valvestate and it sounded very smooth, even with the fuzz cranked it didnt 'spit' or glitch out at all. Ive never even touched a fuzz in my life though so Im not really the best person to say 😁 Edit #2 (Duh!) This pic answers one question 😅 Thanks again 🤘 Edited November 5 by Adey Im an idiot Quote Share this post Link to post Share on other sites
Phil O'Keefe 10,705 Posted November 5 I still don’t see a charge pump, so it is almost certainly std. TB wiring, which means it’s positive ground - you’ll need a separate power supply for it. You won’t be able to daisy chain it. Quote Share this post Link to post Share on other sites
Adey 3 Posted November 5 Thanks Phil. I found this https://doombastardfx.wordpress.com/ It says it has polarity protection. Can I use this PSU that I own with it? It comes with a polarity inverter. https://www.donnerdeal.com/products/donner-dp-2-guitar-pedal-power-supply-high-current-10-isolated-dc-output-for-9v-12v-18v-effect-pedals?_pos=1&_sid=95cf029e4&_ss=r Thanks once again. Quote Share this post Link to post Share on other sites