the original first series "silverface" mts modules had a .0047u capacitor installed from the factory in the "C3" spot on the module circuit board.the newer "blackstripe" versions should all have a .0022u cap installed to tighten up the low-end and pick attack,although i have run across a few that still had the .0047u cap in them & these particular "blackstripe" version modules must have been a super early batch because they were shipped inside the older "white" mts box as opposed to the current "black" colored box.those may have been the few that "slipped through the cracks".there are a couple modules,currently,that have a .001u cap installed from the factory,for super tight response,such as the MR. SCARY module and the 1086,i believe,to name a few...btw,the capacitors can be easily replaced with different value caps with a simple soldering iron OR Randall Amps will,one-time at no cost to the customer,install the current level capacitor on an older "silverface" module if you send the module in to them at their Mundelein,Il location...