Knox Phantom Power Supply for Condenser Microphones – Portable For Studio Recording or Live Stage Performances - LED Indicators, 48V Power – Uses Battery or AC Adapter vs Neewer 1- Channel 48V Phantom Power Supply Black with Adapter and XLR Male to XLR Female Cable (2 Pack)

No sources that do their own in-depth testing have considered the Knox Phantom Power Supply for Condenser Microphones – Portable For Studio Recording or Live Stage Performances - LED Indicators, 48V Power – Uses Battery or AC Adapter to be a good enough purchase for it to earn a spot in their Phantom Power Supply roundups, which is typically a bad sign.

As for the Neewer 1- Channel 48V Phantom Power Supply Black with Adapter and XLR Male to XLR Female Cable (2 Pack) - it wasn't considered to be a good enough purchase to earn a spot in any roundups conducted by sources that perform objective hands-on testing, which typically indicates that a product isn't worth its asking price.

As a last step, we wanted to do a head-to-head Knox Phantom Power Supply for Condenser Microphones – Portable For Studio Recording or Live Stage Performances - LED Indicators, 48V Power – Uses Battery or AC Adapter vs. Neewer 1- Channel 48V Phantom Power Supply Black with Adapter and XLR Male to XLR Female Cable (2 Pack) comparison of their review performance but, unfortunately, weren't able to find any review ratings on either product.