In case you were wondering about the difference between the Boulder Amplifiers 1160 (top) and the 1161 (bottom), here’s a photo to demonstrate. The 1160 is a much larger amplifier and has a power output of 300W. The 1161 is smaller (it is the same width and depth as the 1110 Preamplifier) and has a power output of 150W. The 1161 also has a traditional power inlet and does not require the Big Blue Power Connector, which makes it the perfect solution for smaller systems or systems with limited installation space.