Exar MM-04 Moon Metal

 Next up from Vitalii's traces is Moon Metal from later Exar series. Youtube demo found isn't all that great, but there's very nice EQ section and gain range seems quite good as well. Not a small circuit, but i think this could be quite usable.

Exar HR-03 Hammer

 Another one from Vitalii's traces. This one seems quite nice modern metal distortion with reasonable frequency characteristics. Should be enough gain too. The 47K at the top (horizontal one) may be a point to tweak for even more over the top gain. Like so many of these pedals of Polish origin, this one seems to have no demos available either..

Exar DS-02 Distortion

 VitaliiBobrov is doing an amazing job in tracing Exar pedals. This Polish brand has some decent tones and lots of room for tweaking and trying things out. Once again, try to tweak the values at the inverting input to ground. And try on a different pair of diodes for clippers, etc.

No demos around for this one either...

Exar MT-1 Metal

Hi yall. Noticed a week or so back that it's been exactly ten years since my first post here. To celebrate the occasion, i thought i'd post something. There's been a number of slower years along the way, but so it goes. Life has it's ups and downs. To quote one of the more interesting british bands i've found in recent years: "It's alright now. Not what you hoped for, but that's ok. Teenage hopes are never less than perfect anyway."

Now for the layout. There had been a trace up on FSB for years and it seemed a bit wonky on couple of details. Vitalii checked his unit out and there were a couple of errors on that old trace. His new trace seems to be spot on. Now, this probably won't be the low-parts-count / easy build alternative for HM-2 style sounds, but this may still be nice 1590B-sized build with enough distorion. There's also room for tweaking. For examble, one could sub one or even both clipping diode pairs for LEDs or Schottkys or use a on/off/on switch for changing them on the fly. Hi/Lo gyrator controls seem to be quite effective as well. I bet this will be a fun distortion build with no special parts required.

Sadly, no youtube demos to be found.. Should you build one of these and a make a demo? ...So i could post it up?

Exar OD-02 Overdrive

 Recently traced at FSB by VitaliiBobrov, i find this very interesting. Discrete opamp overdrive, that leaves a lot of room for tweaking and modding. Sounds pretty great even as it is.

There are never too many discrete opamp designs... 

/edit - There was an error on the gain pot label. That's now fixed. Also, the telpod-brand pots on the origal unit use A for linear and B for log tapers. So you should use log pots for gain and tone. Anyway. This is verified.