Sorry, but dB levels are not my thing, this is merely a subjective question. How much louder is also subjective so I'll have to say, a little more than a little louder, OK? If this is too ignorant of a statement, I apologize. The TSM is plenty loud enough ...
Thanks
Thom_s
No disrespect intended, but this is too vague to elicit helpful discussion, IMO. The quality of the advice you receive depends largely upon the quality of information you provide.