SS amp with tight deep bass ?

That EE pre has a whoppingly high output impedance. I don't know if they are the only ones, but the only ss amps that come to my mind, that have an appropriately high input impedance that might work your chosen pre., are some of the Electrocompaniets.

The specs shown here indicate an output impedance of 700 ohms, although reviews from some years ago indicate 1.5K.

I would suggest that you try to obtain clarification of that discrepancy from the manufacturer or importer, and, as Bob suggested, try to determine the worst case (highest) output impedance within the range of audible frequencies, which probably occurs at 20Hz.

Regards,
-- Al

Eastern Electric's web site indicates 1.5 KOhms:
http://eeaudio.com/eeaudio_013.htm

Thanks, Unsound. The EE site's description, just above the "Specifications" link, says "We hope that you will consider voting for us in the components of the year for 2007." And the Morningstar page I linked to refers to "the newly upgraded Minimax." So it seems as if it was redesigned at some point, and perhaps the output impedance was lowered in the process.

We can't really say much more until we know which version the op has, and hopefully what the 20Hz impedance is (as opposed to the nominal impedance).

Best regards,
-- Al