<https://tonysonestopmusic.com/product/radial-prodi-passive-direct-box/>
<http://schema.org/description>
"Radial ProDI Passive Direct Box isdesigned for use on stage or in home recording studios, with the ability to handle high output instruments without distortion, and a transformer-isolated output to eliminate noise from ground loops. It features an exceptionally high 140kΩ input impedance to reduce loading while enabling the ProDI to handle extreme signal levels at all frequencies without distortion. This is further improved upon with an internal MuMETAL® shield to protect against electromagnetic fields that can cause unshielded transformers to distort."
<https://tonysonestopmusic.com/product/radial-prodi-passive-direct-box/>