@islandmandan @vegasears @glenfihi you will all note the absence of my Tandberg TCD 440 A from the system list. Sadly, it ascended to Valhalla and joined its distinguished Nordic compatriots in mid-October. I replaced it with a Dennon DRM-710 that was also mentioned in a forum thread about 60 Hz EMF. It does not appear in the system list because the EMF noise prevents me from installing it in the rack. The only space left is on top of the TASCAM DA-3000, which unfortunately generates the hum. Isolation by distance was the only solution that worked; different cables, revised power isolation and a grounded Faraday cage didn't.