Danie1k141- Thanks for the clarification! I new the 20.1 used a push/pull type driver and I was unsure about what they meant! I am trying to arrange an audition on the 20.1's but the dealer in my area has never sold a pair of 3.6's let alone the 20.1's(mine came from different dealer), so it makes listening to the 20.1's difficult. There is a guy with a pair of MG20's in the area but I am not sure of how much of a difference there is between the .1's and the older model. In other words the local dealer near me is useless :o)