"Installation went easy and it works great!" - Ralph Henes K9VDD

"This is one super little amplifier, It really doesn't get any easier than this. 600+ watts out, automatic band switching, reliability backed up by a super company that has first rate service organization. If you are looking for a no-nonsense, compact, solid state amplifier, you can't go wrong with the SG-500. This is the 4th SGC product that I have bought (auto couplers also) and I'm a very satisfied customer!" - Paul Zora K3PZ

"Tested at 650 miles. I am going to tell everyone as to how pleased I am with it's performance." - Jim Boothe KB9VR

"Very excellent quality product. I also purchased a PS50 power supply at the same time." - Alan Belz KJOY

"Thus far I have found the 500 to be an exceptional piece of equipment, and a definite asset to my station's performance."
- Virgil Anderson Jr. KR4CK

"4 “S” units difference, could not hear me without amp. Used in mobile services - great quality and construction."
- Ron Levin W3GBU

"Excellent in all respects." - Kenneth Wasson W5WME

"The audio sharpened up considerably compared to the [amplifier] I was running. Operating is the best I have seen. Power output is outstanding. I am very satisfied with the SG-500." - Thomas Stanley

"The SGC Powercube is the first amp I did not build in 35 years. IT IS THE FIRST AMP I HAVE FOUND THAT I REALLY WANTED. We have another SG-500 in service as a part of county-state disaster net and are pleased with it. All is simple and good."
- Ray Carlson KNFZ240