I need some serious help!

I have a Fostex MR8-HD that has weak pres... so I'm looking to get a preamp to put in front of that. All I'm really using the Fostex for is to capture the sound. I take the files and do all the mixing on the computer. So, I'm looking for a unit that I can connect to the outs on the preamp that is only used to record the audio. No panning, or effects, or anything fancy. just something that has a volume level and a stop, ffwd, rwd, play and record button. Something that has no pres or the ability to bypass them. because then I'd like to take those files, dump them on my computer and mix.

I'm interested in a separate unit for recording (not using a computer) because I like not worrying about issues with a computer as well as portability. Especially latency issues while recording multiple tracks (or tracks on top of other tracks). I've never had any issues with latency or falling out of sync with my MR8HD. I have with my computer.

Any suggestions are definitely welcome.