In support of Eric at Tekton, I He has been nothing short of nice, helpful, spending time has been no object. I have had Tekton Double impacts(still have them) for 4 years and loved them for Rock and Roll, have great electronics (ex: Amp Pass X250.8, Bricasti M1SE DAC) Due to speaker efficiency, listen via Class A power. Wanted more Mid range and high Frequency transparency and depth. He built me Serial number 5 and 6 of a special ENCORE version, 175lbs. Everything I wished for and more, wasn't cheap, at least for me, but still under 10K. The first shipment was destroyed by FED EX (shipping) After initially waiting some time for shipping for the original to be built (special cabinet and drivers) he and company made an outstanding effort to build me another pair quite quickly. May be as said (in the eye of the beholder) but, these speakers are so dynamic and accurate and, No pun interned, Rock and Roll. Thank you Eric, they really work for me. Listen and make your own mind up. Robert TN