SMP5.1 Provides precise measurement of audio levels in a surround environment, the SM5.1 allows easy alignment of the surround system as well as monitoring levels at a glance. Coleman Audio has assembled the finest movements and combined all the necessary features in it's line of analog metering systems to satisfy the most discerning engineers. The Coleman VU meter line has been updated to have an adjustable peak indication as well as the factory alignment. The new operating levels are +10db and +4 db to make the VU respond in a useable scale with the hot digital levels coming from DAW's. The Peak level is set at +18db which equals 0Dbfs in the DAW's. This can be readjusted to another level if desired.