Open Box Rolls MP13 Mini-Mic Preamp Level 1

Be advised the unbalanced line in is 1/8" (3.5mm) - not 1/4" as stated. Photo of rear panel clearly shows this. I knew this when ordering so I got what I wanted. It works just fine. My mic has the 1/8" male jack and you will need to engage the phantom power button for it to operate. Also be aware the 1/4" output jack will take a mono (TS) or a stereo (TRS) connector. I can now record into OBS Studio without software filters that apply gain. Or I should say I don't need to bump up the gain in the filters. Also makes voice recording with Audacity much less cumbersome. While noise filtering may be needed after the fact (not because of the preamp but due to perhaps applying too much gain) I do not need to use the Amplify filter after making a recording. Worth the cost for my purposes. Shipped from Kansas City. MO on Wednesday and delivered to a city in So Cal by UPS on Saturday. Excellent transaction all the way around!

I connected this MP13 preamp to my wireless microphone, it increase volume and clarity.

Like all Rolls products, this thing has no frills. It's a very solid, well-built steel-bodied pre-amp with phantom power. It's about the quietest option you're going to find for under $100. If you need an affordable & portable solution, don't waste money on M-Audio Buddies or any of those other noisy low-end options. I've only had this a couple weeks, but the Rolls headphone amp I use has been constantly plugged in and working perfectly for 9 years now. This pre-amp looks like it is just as high quality.