Designed by Jim Wood who also designed the Inovonics 222 back in the 80s. This box does everything the 222 does but additionally has multiband peak compression/limiting, gain-raiding AGC, asymmetrical peak control, and low and high EQ. My interest in AM is dwindling and so no longer have use for it. It's blemish-free, looks brand new and works flawlessly. Here's SW200 website:
https://www.schlockwood.com/productsDetailed technical documentation available upon request.
$350 incl shipping
Email address is good on QRZ.