The 2120 is for both performance and professional studio work. It has balanced (TRS) outputs for ultra-low noise, low-impedance connections directly to the console. These can also be used to drive a power amp directly. The 24 bit digital signal path helps to ensure that it operates almost noiselessly. This model includes S-DISCII processing, a substantial upgrade over the 2101. The 2120 can do everything that a 2101 does, so you can search on YouTube for examples from both. All in working condition