Rolls SE560 Sonic Exciter and Preamp for TurntablesThe Rolls Bellari SE560 is a sonic enhancer for turntables, though it also functions as a preamp thanks to its ability to provide 19. 1 dB of gain. It sports RCA inputs for phonographs, as well as a single stereo 3. 5mm input for phones, tablets, and compatible media players. The sonic enhancement is provided by means of two knobs, both of which offer tonal shaping. The Bottom knob controls frequency enhancement over the lower frequencies, while the