I've recently added a Ming Da MC-7R tube preamp to my SimAudio Moon W-3 and Reference 3a MM de Capo-i monitors. I'm very pleased with the results.
The UHFmag.com Reference System uses the Copland CTA-305 tube preamp with the SimAudio Moon W-5LE.
For other possible winning combinations you might also want to check out the De Capo owners web site;
For owners of Reference 3A loudspeakers.
http://www.audiocircle.com/circles/viewforum.php?f=53
Regards
The UHFmag.com Reference System uses the Copland CTA-305 tube preamp with the SimAudio Moon W-5LE.
For other possible winning combinations you might also want to check out the De Capo owners web site;
For owners of Reference 3A loudspeakers.
http://www.audiocircle.com/circles/viewforum.php?f=53
Regards