I put front and rear JM speakers into my RGU last March, this was good, but I wanted great. So after a year of hemin and hawin I pulled the trigger to finish the job and put the JM 360 watt amp in last night. Whoa Nelley!!! It is not the Roker series but it is only 30 watts less and sounds great! I love dealing with John and his team, great customer service and products.