david_ten-
Despite all the buzz, I have not heard the Tektons, so no idea how these amps might interact w your speakers, but I cannot say enough about the Atma and VAC Ren amps. IME, 300b SET amps could not drive 94-95 dB speakers in my moderate sized room (18' x 14' x 8.5') w/o clipping with pretty un-demanding material (americana/singer songwriter/acoustic blues), even when the mid-low bass was handled by a separate 250 wpc ss amp. If you listen to wide dynamic range stuff like full orchestra, you are going to run out of gas on crescendos pretty quickly. Other advantages of those amps are variable feedback (VAC Ren) and unparalleled support from both VAC and Atma.
Despite all the buzz, I have not heard the Tektons, so no idea how these amps might interact w your speakers, but I cannot say enough about the Atma and VAC Ren amps. IME, 300b SET amps could not drive 94-95 dB speakers in my moderate sized room (18' x 14' x 8.5') w/o clipping with pretty un-demanding material (americana/singer songwriter/acoustic blues), even when the mid-low bass was handled by a separate 250 wpc ss amp. If you listen to wide dynamic range stuff like full orchestra, you are going to run out of gas on crescendos pretty quickly. Other advantages of those amps are variable feedback (VAC Ren) and unparalleled support from both VAC and Atma.