The UFLEX216-UC133IOB BALANCED CYLINDER is a high performance, low noise, balanced output transformer. It is designed for use in audio and video applications where high quality audio and video are required. The UFLEX216-UC133IOB BALANCED CYLINDER is a single ended transformer with a balanced output. It has a nominal output of 216 watts per channel into 8 ohms and 133 watts per channel into 4 ohms. The UFLEX216-UC133IOB BALANCED CYLINDER is a true balanced output transformer, meaning that the primary and secondary windings are balanced. This results in a more accurate output signal and less distortion.