Best amp for Avalon


Just bought a pair of used Avalon Radian HC speakers and wondered if anyone can tell me which reasonably priced amp would best suit the old classics. I currently have a Tube Research ST-100 but I just wonder if they would be bettered served with something else?? Anyone out there have experience with this speaker. Any input would be appreciated.
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Radian and Ascents (I have the latter) are the hardest speakers to drive. Eidolon, Opus, and Ascendents are completely different.
For Radians plan on using something extremely powerful like 300WPC for bass and something > 70WPC for the mids and highs.
Radian HC means "High Current".
Specially built for the Spectral amps.
TRL S100 monos will be perfect for mid and high.
Not for the 2 power hungry bass drivers in sealed box config.
Johnsonwu is correct. I recall it being a special package with the Spectral amps and special MIT cables and a 3D moniker. A class A amp like one of the offerings from Pass would be a good start. I also noticed an Audia Flight 100 listed for 3500.00 which is an excellent price for 100W of class A power.
Do you have to use identical amps if you biamp? Can you use tube on top and solid star on the bass. What about gain difference?