As of this posting, Digital Performer v3.02 supports the following samplers:

AKAI:

S3200 -- v1.30 minimum
S3200XL -- v1.50 min
CD3000XL -- v1.52 min
S3000XL -- v 1.5 min
S2800 -- v 2.00 min
S2000 -- v1.51 min

E-mu Systems:

E4xturbo -- v2.50f minimum
E4x and E4 -- v2.50f min
E6400 -- v2.50f min
ESI32 -- v2.50 min

Kurzweil:

K2000 -- v2.31 minimum
K2500 -- v2.31 min

Roland : S760 -- v2.24 min

Yamaha: A3000