I have a kenwood 9102d...and its 2 ohm stable..but the box and manual are very unclear if it is 1 ohm stable...i thought it was 1 ohm stable..but asked my shop they said no its only 2 ohm stable..cause i can only hook up my subs to a 1 or 4 ohm load..so i had to go with a 4 ohm load..which is okay.