Review on Portable Headphone Amp With 3.5Mm Stereo Audio Out, GAIN Support & Lithium Battery - Compatible With IPhone/Cellular Phone/MP3/MP4 /Computers. by Sam Lee

We are going to a haunted hotel this month and have been gathering equipment to help with our little ghost adventure. :)We needed something to boost the sound of our (very quiet) spirit box (SB7), and this seemed like a good solution. We hook it up to our spirit box and then to our external speaker and we can finally hear it! It boosts the sound perfectly!It has a rechargeable battery, which is great. Looking forward to our ghost adventure and grateful to have found a little amp that will fit in the same case as our SB7 for easy accessibility!