I got my XO BMS from Steve at www.thevintagesound.com to replace my original BMS and free up some real estate on my board (getting ready for my new Loop-Master double effect switcher! -- www.loop-master.com)... So, tone/sound-wise, here's how it stacks up: seamless. The sound is fully preserved and still has that warm, analog output. In combination with distortion (Vintage RAT), fuzz (Fuzzrocious GGG-tuned Big Muff), pitch shifting (Boss PS-3), and delay (Line6 DL4), everything sounds the way it's "supposed" to sound, except without major tone-sucking downfall that the original non-true bypass BMS was notorious for. +1 for TB. The LED is a huge help. 'Nuff said. The only problem I have is finding the exact settings I had on the old BMS. There are more lines on the new BMS, so I tried to match it up the old settings as best as I could. When I A/B'd the pedals, there was a difference in the sweep, so that will take some time to get used to... So, no real problems. No real gripes. Worth the money. Now to sell off the old BMS... Hope this helps everyone out!