Solid... With Style Packed with professional features, the HD150 combo is designed to be user-friendly and reliable for players of all levels. The combo offers Volume, Bass, Mid and Treble controls on its top-mounted amplifier panel, as well as a 7-band graphic EQ, allowing for easy adjustments. It features a full effects loop, as well as an 1/8" stereo Aux input for playing along with your favorite tracks via an MP3 player and a 1⁄4" headphone output for more intimate practice sessions. The HD150 also has an XLR direct output for routing your signal to a mixer in both live and studio settings. In addition, the HD150 has a built-in limiter to ensure constant amp operation at safe levels. Lastly, its solid enclosure is finished in a stylish fashion with a sleek, perforated metal grille, side carry handles and casters.