Attention MXR Phase 90 owners... Do you use it in the input or the effects loop? Many years ago I realized that modulation pedals sound much, much better in the effects loop versus the input. Some just sound too quiet in the input, sometimes you can barely hear the effect at all. And ever since I made this realization, I've put modulation pedals in the loop without a second thought. Then I got the MXR Phase 90. There's a few variations now, I have the modern "block" kind. Is my pedal broken, or does it just not work well in the effects loop? I have a Marshal JCM DSL and when I put my Phase 90 in the effects loop it just sounds horrible. It adds distortion (not the good kind) even on my clean channel and is totally unusable because of this. I've even removed the "feedback resistor" (some people call this the script mod) which helps but it still has some distortion in the effects loop. However, when I use the Phase 90 in the input, it sounds just fine. As I would expect it to. Does anyone here use the Phase 90 in the effects loop? Is it just my amp maybe?