Hello, After following the forum for a while I thought it was time to be more active and actually post something ! I have been researching phono preamps as I am currently relying on a built-in stage in my Onkyo amplifier. My question concerns those preamps which offer a "subsonic filter" to reduce or eliminate rumble caused by vinyl imperfections. Is this a feature that is genuinely useful ? Not every manufacturer includes it. Apparently this can "protect speakers from excessive wear", and I wondered how many members have a preamp with this feature, and what are their opinions on it ? Thank you in advance.