how to increase power?

or proportionally speaking, get more efficient speakers.

My Conrad Johnson MV55 is 45Wx2.I know for a fact that it can be rewired for monoblock configuration by the manufacturer.Although it is not recommended as it diminishes the sound quality somewhat.Perhaps your Consonance can be rewired.Check with manufacturer or dealer.
Then of course you need a second one for the other channel.
Best
George

According to the review I just read, your Consonance integrated has no separate preamp output. That excludes your using it to drive mono blocs to gain more power.

You may have to sell it and buy another piece. In any case, don't tap off the speaker terminals for signal, it's could cause harm to the Consonance and whatever your trying to drive.

My suggestion applies more toward higher current drawing amps, but even so, I would first install this amp on it's own dedicated circuit/line.

Not only might your AC be perhaps just a tad less noisy translating to an ever so quieter noise-floor, but you might just be a bit amazed at the increase in macro-dynamics bursts on certain current drawing passages.

Especially if you are presently sharing this amp with one or more components, refrigerators, etc..

-IMO