Elecraft recently showed their new KAT500 auto tuner at the annual DX convention in Visalia, CA. The tuner is cable of tuning a load with up to 10:1 SWR at 600 watts and up to 1.5+ KW at reduced SWR levels of about 3:1.
Here are a few pics that Elecraft posted on their website of the tuner sitting atop the linear amplifier:
Here are a few pics that Elecraft posted on their website of the tuner sitting atop the linear amplifier: