I have been using a Heathkit SB 200 for a driver for a bigger box for the last few weeks and it works great. I have a Uniden Grant driving the Heathkit with 3 watts dk and 14 watts pep im seeing 30 watts dk 200 pep out of the amp. Almost perfect for driving my Wizard. Another plus is I was going to have to take the Wiz back to the builder to have a SSB delay installed but with the 200 in front of it 0 relay chatter on SSB. Running the Wiz at about 600 watts DK. 1600 pep. 500 avg. 1600 on SSB. Running that 200 easy like that makes for some clean audio. And the SB200 works great for local chat.