@dain your speakers are 86dB with nominal impedance 4 ohms. I haven't seen the impedance curve, but it may drop below 4 ohms at certain frequencies. This is a quasi-ribbon speaker and usually a demanding load for the amplifier. Your amp may not be up to the task of driving these to their full capabilities. I agree with @ditusa that you need a more powerful amp to bring these to life. It is not about playing it loud. With a more powerful amp, you get better bass, imaging, spacing, and depth. Find a good SS amp that can deliver at least 200 W at 4 ohms and 400 W at 2 ohms. There are many good amps that can drive these speakers.
Too much power?
I have a wonderful system with a great amplifier, and yet auditioned a more powerful version of the same amp. It indeed seemed to have more punch and drive, but at the expense of playing it a bit too loud. As my current system I rarely play over 70 db, since it’s perfect at low levels. I wonder other than bragging rights, what does more power get you? Since we aren’t here for PA style sound, is there a reasonable limit to how much you will benefit from higher power/ more expensive and? Especially since tire just using one watt most of the time?