Phono Preamp w/ Rumble Filter

@stephens770

Not sure why other phono’s in Parasoumd lineup don’t offer rumble feature. When I tried zphono_xrm with my Thorens TD 1601 (Hana ML Cart), I was pleasantly surprised how well zphono performed. Dead quiet, detailed and well balanced. I believe it’s one of those products in ‘giant killer’ category. I ordered mine from MusicDirect with 30 days no questions asked return policy.

Another recommendation to eliminate floor / airborne vibrations, try these soft dots underneath your TT stock footers. They were very effective in eliminating vibrations in my system,

Another great suggestion, thank you! 

There are some situations where a rumble filter has to be used as a last resort.  I have such a situation, tried every recommendation within these pages, spent countless unnecessary money and even changing turntables and cartridges, twice.  After all that, I went with the KAB rumble filter @ $179.00.  It works as advertised, does not affect the sound and allows me to enjoy vinyl at any volume. I have been using it for 7 years. 

Just a quick thought -- since you are using subwoofers, have you run a frequency sweep with a good measurement mike?  It is real easy to end up with too much subsonic info that is aggravated by room nodes and has little or nothing to do with the music itself. 

Alternatively, consider a rumble filter to the line level feed to the subwoofer amp, like one from Harrison Labs which comes in 20 HZ and 30 HZ high-pass options with 12 dB/octave curves.  At about $30 on Amazon, they'd make for an inexpensive experiment and are returnable if you don't like them.

Disregard if you've already checked out this angle...

@stereo5 - thank you very much! You describe the exact rabbit hole I didn’t want to go down and knew it was possible. With this piece I can buy any phono preamp I llike and add the rumble filter. 
 

Thanks again.