About the Linear Tube Audio microZOLT Preampifier upgrades Jan 14, 2021 14:46:17 GMT -5 Quote Select PostDeselect PostLink to PostMemberGive GiftBack to Top Post by sailor on Jan 14, 2021 14:46:17 GMT -5 Just published a vid of recent visit to LTA in Takoma Park MDLTA microZOTL preamp upgrade