I have checkd with Rod Tomson at Soundings in Denver. he carries the Rowland 102 and is very familiar with the Vandersteen 2C speakers. As the 2C has a relatively high impedance of 7 Ohms and has a 1st order crossover with a recommended power handling between c.ca 60W and 160W, the 100W over 8 Ohms of the JRDG 102 stereo amplifier should work quite well.
BTW, the JRDG 102 is not a digital amp. Class D amps like the 102 are analog devices.
Guido