100 watts enough?

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71dB seems low to me. I would have thought something like 80 dB would be more typical.

@unsound wrote,
’Many amp designers suggest that amplifiers are typically at their most linear when operating at about 20% of their output and further suggest having about 80% headroom.’
This seems very logical. 20% = 20 watts from the CH Precision amplifier.

Kijanki calculated based on robal’s seating distance from his speakers (Accurately in my opinion) 1 watt will provide 82 db SPL and 10 watts will provide 92 db SPL So definitely not exceeding the range of desired amplifier output linearity. 92 db is loud (Assuming no hearing deficits) and probably well above robal’s listening levels in his condo environment (Achieved with only 10 watts).

CH Precision amplifier is providing 100 watts of very high quality.
I don’t see the rationale for recommending higher power amplifiers for robal’s stated needs and circumstances. His speakers are 6 ohm impedance (Minimal) so they are not demanding of high current capability amplifiers. 
Charles

@charles1dad, I haven't recommended higher powered amplification here. I agree with most of yours and Kijanki's posts, though I don't think 92 dB is all that loud, and I think the OPs rather large room is a consideration. IMHO, while 100 dB is most certainly verging on the loud side; 105-115 dB peaks are LOUD.

@arcticdeth,

you sound like the type of neighbor I would avoid at all costs.