I assume you did, but still have to ask - did you give a good 24 hr. warm up before critical assessment? My old reliable stand-by ADCOM GFA 5500 sounds a bit bright and forward until fully warmed for about 24 hr. and then settles in to sounding quite nice. The amp (integrated amp) I settled on - after many hours of home listening - to pair with my Maggie 1.7s, is the Rouge Cronus Mag ll. With the KT 120 tubes, is very dynamic, open and detailed with just the right amount of smooth and very musical. I know allot of tubers love the EL 34s but, in my system, just a bit to milky for me. If you can't get your Exposure dialed in - the Cronus Mag. ll might be an option. Like your Spendors, the Maggie 1.7s are very quick and detailed and the Cronus does a very nice job with them.
Jim
Jim