The lister got back to me ... they won't work for the DQ-20s but I'll list in case someone else is interested:
Small stands - 15 in. High, top 6 1/2 x 6 3/4 in. Base 11 1/2 x 11 1/2 in.
Tall stands. - 28 in high, top 5 x 5 in., Base 11 1/2 x 11 1/2 in.
Thanks again for pointing them out...