The Blackstar ID:Core Stereo 20 Combo revolutionizes the "entry-level" amp by serving up features like a lush stereo speaker design, six onboard voicing options including OD, Clean, and Crunch, and a nuanced EQ control with the company's Infinite Shape Feature (ISF) technology for an impressive array of tones. Immensely versatile, the addition of USB connectivity for recording and MP3 line-in for dual function as a music system in addition to your practice rig.