Hello all, I'm new here and I believe I looked through all the DSL15 threads so I apologize if this has been answered previously.. I recently purchased the 15H and I quite like it but wasn't overly impressed with the red gain channel. A little too fizzy too fast. I checked the tubes and the bias and it was all excellent which is nice. I did a bit of searching and came across this forum and found a few mods (snip a cap and a resistor here and there, adjust some values etc), I dia few of them and there was a noticeable difference which was quite nice to hear. of course upon opening the chassis I noticed a few things (which are totally understandable at the price tag), super cheap Chinese caps was the first one that stood out to me ... also a fairly simple upgrade. That said, finding a parts list and or schematic for this thing is proving to be nearly impossible. I know I can measure and read codes by looking at the board but I'm far too lazy to do that without reaching out to someone else for advice first ( I mean if someone else has already done the work for me ....) Does any one have this information available? I expect nicer components will make a world of difference. Next step is to look for some nicer irons and see how that goes. For the price of these amps they are soooooooo worth modding and upgrading.