I am using a Traynor TBA-1 Bass Master head. It is all tube and has plenty of power (i have never had to turn it past 3). On the back of the head it says 200 watts, but i have done resurch all over the internet and have only found the YBA-1 listed as a 50 watt tube amp. The amp works fine and i have replaced the tubes once since i have got it (2 years ago). So there is no problem with it, i am just wondering if anyone has any info. on the Traynor YBA-1 Bass Master. Any help?