Little Bobby

The SA GX 700 and 730 units are awesome for driving the KG4's These units were made in the 90s Make sure you buy the Class A or Class AA units. Stay away from the Class H The A and AA class units have a THD of .0008% at 1 watt. Really Clean and amazing damping factor as well. I purchased my set in 1986 and they are still rocking Paired with a Klipsch SW-10 powered sub through the Pre amp output on the SA GX730 Best speaker I have ever owned once paired with the sub. Enjoy my friend