Hello, I'd like to start out by saying I'm new to recording and to these forums, and am in need of aid w/ my current recording setup. I've recently started recording a rock and roll album, but have ran into some issues. I have a very limited budget but would like to have the best quality possible with my pre-existing equipment. I currently using a Boss BR-8 studio-in-a-box, and it's pretty okay, not good but okay. I have four microphones, including a Shure SM57(X2), SM58, and a Rode NTK Tube Condenser(this one is at my brothers so have not been able to test as of yet on it). The problem w/ the BR-8 is that recordings that come from it tend to be run-of-the-mill and sometimes lackluster, compared to most pro recordings. But I recently came in possession of a 1940's preamp/mixer, no manufacturer or plates labelled, but it has the whole vintage look, big Bakelite knobs etc. The unit has 4 channel 3pin XLR female outputs and a fifth 4 pin XLR output I assume to hook up to a recording console(I do not have one of these patches so it has yet to be tested), or any other external piece of equipment. The front panel has two 1/4 inch input jacks for phones or for output. Now using the preamp as a stand alone there is a crisp, bright tone, fat, no hum or transistor like hiss. But when I attempt to hook it up to my Boss recording console, using the 1/4 patch in the front of the unit(as I have no XLR outputs on this vintage piece) I get a very distinct hiss between the devices this can be somewhat eliminated by touching the patch at the preamp end, But still get that transistor-esque radio wave sound. This abundantly obvious on the tracks, I've tried equalization on my Boss, and the noise filter, which seems to do okay but the threshold is really high and every time something other then white noise enters, it becomes very obvious that there is an effect applied. Could this be just a lousy patch cable? I've tried multiple but none are high end patches and although the preamp is old it's been kept in immaculate condition by the previous owner. But this problem only occurs when going from one device to another. My intention to record live 2-3 tracks at time, and by all means try and get the sound of late 50's and 60's. But this is not just noise but very apparent distinctive hiss. What could I do to eliminate these problems? Is there a relatively inexpensive device that I can purchase that has four XLR outputs that I could connect to the preamp, and not have to worry about 1/4 inch patching? Would it be worth modding? Or would an external mixer be a better idea to hook up to? Would a noise gate correct this issue without effecting my sound? I think part of my problem comes from the Boss digital preamp and my preamp conflicting, but the booklet for the BR-8 actually suggests a preamp connection for low impedance microphones. Am I thinking about this backwards? What are my alternatives at this point? I'm a novice at recording, but have a good ear, sometimes the engineering aspects go way over my head. Any advice you can give I would be quite obliged.