Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Phono Pre-amp

I recently upgraded my entertainment center and my new AV receiver did not have a phono input. Since I still have around 300 albums, I needed a way to input a phono (turntable) signal. This Behringer PP400 Phono pre-amp was just the ticket. When I first hooked it up it had an annoying hum in the signal, but after I discovered that I forgot to hook up the ground wire and fixed that, it worked just fine. Now I'm enjoying all my old music from the 60s & 70s. I'd recommend this product to anyone needing to hook up one of those antique "turntables" to a modern receiver.