Given you could afford it, would the GamuT amps be the ones you would want to keep for use with the DC10As? Otherwise, if you had to sacrifice the amps for new speakers, and potentially exchange to a less expensive/quality amp, you could be defeating the goals desired in your speaker upgrade. Also, two variables (amp and speaker change) could "cancel" out any intended "upgrade." Of course, if the amps are not being used in system then my points above don't matter.
Personally, I am a long time Vandersteen and Thiel fan.
Personally, I am a long time Vandersteen and Thiel fan.