my buddy just added this machine to our collection and we have run it a couple of time with a variety of pre's (V2, M248, MixPre, & Sonosax). My question is to anyone who has had experience with this machine. What setting do you use for input and output? Options are Low Gain, +4 or -10. So far, levels have been unpredictable and all over the place at opening of shows. Anyway, any help would be appreciated. Thanks
BP