
Bought this for my dad to connect to his active monitors/electric pianos with multiple audio inputs: 7 inch tablet (for Pandora streaming ); a small Sony CD/DVD player; and his little MP3 player. After a month of use this seems like a great device with a lot of flexibility. We haven't really explored its ability to read USB sticks and SD cards, so I can't comment on that interface. We also didn't test the Bluetooth capabilities with a tablet, for example, as we don't really need it. I can tell you this is a well made piece of audio, the tone controls and master volume are very effective, the knobs feel very solid, the built in radio works great (we had to carefully position the wired FM antenna to pick up one in particular Station) and sounds great and I can highly recommend this preamp for modern applications. Art, especially l at this price. I would suggest ignoring the 1* rating for obvious reasons (if you read it). PS 10/23/18 Obviously I'm not comparing this to "audiophile" gear that costs 10-20 times more. The rating takes the price into account, of course, and it still feels great. PSS 11-1-18 I connected my smartphone via Bluetooth and this function works fine.

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