Sorry for the super brief message. I only had 420 characters to use! This is an AB763 build, 1 channel with no tremolo. My other option is a Hammond 1760E, 15 watt, 8.5k with 4,8 or 16 secondaries. I could mismatch an 8 ohm speaker on the 4 ohm tap to get 17k reflected load which is lower than ideal I believe for 6G6G, though I see you have run 6AK6 with a 16k primary. Thanks again!