Betso TCD-1, 788T and all wireless can be AC-powered |
Percy Urgena, founder of LMC and working location sound mixer, explains some circumstances he's used it in. "I use it when I use my rig on a cart in a studio. I just leave the sound rig on and don't have change batteries. I want to save recharging cycles on my lithium batteries, thereby making them last way longer. I had a shoot last year where I worked on a blimp flying across the US for 5 weeks. Sometimes I was not able to go on it due to weight restrictions. I just miked up everybody, hit record and never had to worry about power loss because I plugged into the AC system of the airship. If there is a day when I film a scene that takes 3-4 hours in one location. I just plug my rig in to AC. It saves one extra charging cycle. It all adds up."
The AC delivery is solid, fluctuating only about 1/10th of a volt when turning various powered wireless units on and off. Considering anything you are powering is capable of handling variable DC voltage, this is plenty good. I have several different versions of the Remote Audio BDS as well as a PSC Power Star Mini for battery distribution and the adapter tested fine in all of them.
I personally use Remote Audio NP cups in my rigs because they're all I've known and they hold up well, for the most part. In my NP cups, the NP1 AC Power Adapter is actually a little small. It wasn't quite a snug fit as I would've like to have seen, but it still fit ok. I used a rubber band to keep it in the cup as to not fall out. To be fair, even my batteries fit loosely. I even have some moleskin on the inside of the cup to give it a little more tension. I haven't tested the fit on other NP cups, but I feel like mine is looser than others, for some reason. The adapter is ergonomically designed so it can be pulled and inserted with ease.

It comes in a tidy little neoprene case, which is quite nice for packing and traveling. The build quality is sufficiently sturdy. I don't forsee any damage occurring to the adapter, provided TSA doesn't crush it for fun.
Check with your favorite sound shop for an NP1 AC Power Adapter by LMC Sound. It retails for about $135. I now have 3 of them.