NO-You will need at least a 35 watt tube amp just to get good low level sound. The Maggies will suck a 15-20 watt amp dry in no time.
Find a decent 40 watt golden tube or similar and you may be happy. However, from personal experience, don't even try it with less than 60-100 watts.
Find a decent 40 watt golden tube or similar and you may be happy. However, from personal experience, don't even try it with less than 60-100 watts.