I've used Syn. Res. Master Coupler for about 6 months now with excellent results on my DNA-2DX. Of course you know that it takes a 20 amp plug on the amp end. I had to special order the SR-MC, and before I did, I had a chance to audtion the Shunyata Sidewinder in 20 amp. The Sidewinder had some good characteristics but I preferred the neutrality of the SR-MC. Happy Hunting. Craig.
