I have an ART Nightbass effects unit/preamp. I would like to use it with my Eden WT-800 head, but I have been told that it was best not to use a preamp with a preamp because it would just cause a lot of noise. I had hooked it up one point, but I don't think I had it hooked up right. I don't want to damage my head so I got an inexpensive rack mount effects unit, because I don't like pedals, but it doesn't have the quality effects or the versatility of my Nightbass. I used to run the NB through a straight power amp and that worked great, but I really wanted to get this Eden head. I don't use a lot of effects so if I am not able to use this with the Eden could anyone recommend a rackmount effects unit that that's good quality and not at a crazy price or maybe suggest how I could connect these properly I would really appreciate any response. Thanks