The first time I installed under-cabinet LED strip lights I didn't use a channel / diffuser lens. The quality of light was fine, but the LED reflections in the granite counter were noticeable and annoying. New kitchen now and I used the channels / lenses and it is a cleaner installation and cleaner reflection in the countertop. Up your game and use the channels.
36 Watt S-Series Dimmable Driver (Electronic, UL) - 12 Volt
Your tech guy gave me incorrect advice. Now I need to return an unneeded item.
We use this driver exclusively. It fills all of our required needs on many multi million dollar homes.
I used them for lighting in display case’s in a railroad museum. They worked great and easy to install. The only problem that I didn’t like was that I had to go to Amazon to get the power jack input pig tail’s for the cut off sections that were left over from the 16 ft roll . I only needed 8 ft sections. It would have been better if they were a accessory that was available through HitLights . I hope they last ,time will tell .