Guitar Pedal X - GPX Blog - Westminster Effects' 2716 Seth Morrison Signature Distortion Pedal is a really capable reproduction of his mainstay Mesa Boogie Dual Rectifier Revision F Amp
My 5 Favorite Rectifier Boosts! - YouTube
Mooer Cali-Dual Pedal (Based on Mesa boogie dual Rectifier)
Guitar Pedal X - GPX Blog - Aura Amps Diamond High Gain Distortion is about the most authentic Dual Rectifier in pedal format you can get - with 3 flavours of Rectification onboard