I read the person behind Add-Powr is the same engineer who created the QRT products which was then sold to Nordost over 10 years ago.
Probably his non compete clause has ended and he has respun the technology into a new company (with improvements hopefully).
For example the Add-Powr Electraclear is essentially a Nordost Qv2 (both inject a sine wave your 50/60hz power frequency).
The Symphony/Pro is the Nordost QRT field generator QX2 and QX4. e.t.c
Probably his non compete clause has ended and he has respun the technology into a new company (with improvements hopefully).
For example the Add-Powr Electraclear is essentially a Nordost Qv2 (both inject a sine wave your 50/60hz power frequency).
The Symphony/Pro is the Nordost QRT field generator QX2 and QX4. e.t.c