@tomic601 i think the Hagerman is crying out for mass, then springs......
like a 1/4 or more plate w holes drilled for tubes, granite base and springs.....
Jim, now on that I agree. But, unlike Mikey stated, you aren’t going to flip it over with IC/phono cables. That was a more than slight and unnecessary exaggeration.
One problem is that the bottom has venting slots, so probably cannot be fully covered. The bottom/base would be a great place to install a heavy plate, or similar. Hey, I have my bag of excess lead weight for the SOTA I could simply tape inside 😉 I do have some DynaMat that I could strategically place inside. That would help reduce vibration within the chassis, but wouldn’t add mass as in actual substantial weight.
But really, the Trumpet is pretty incredible ‘as-is’. That said, tube rolling, a possible external power supply, (I tried one I had after consulting Jim, but took it ‘off’), and yes, the possibility of making it more impervious to vibrations (especially with the tubes) seems to make sense, and I’m sure could make it even better than it is, which is pretty darn good to my ears.
As Muveling has noted in a post. The Trumpet has found a place only below his VAC Renaissance, but places it above his Herron VTPH-2A, Rogue Ares, and Sonic Frontiers Phono 1 SE.