http://www.wamplerpedals.com/heritage/plexi-drive-deluxe/
Since the early 60’s, Marshall Amplifiers® have lead the way in rock tones with its legendary tight overdrive and coveted bass response. Early rock legends such as: Jimi Hendrix, Led Zeppelin, Cream, and AC/DC helped lead the way in creating some of the most iconic rock tones ever produced and catapulted Marshall® into rock legendary status.
The Plexi-Drive Deluxe, is a direct descendent of the Plexi-Drive Standard but with a few upgraded features. Like the original, the Plexi-Drive Deluxe's unique gain structure can cover everything from Vintage '68 style Plexi tones to the all out massive rock tones of a JTM-45® cranked to ten, or even eleven...
With the addition of an all-new active 3 band Bass/Mids/Treble EQ stack – you can now have even more tonal control. With the bass boost option, you can emulate the feeling of the low-end thump of a 4x12” cabinet (or two) at the flick of a switch. The bass boost will allow you to dial in your low end at lower volume gigs or at bedroom volume levels. Along with the bass switch, We added a bright switch to add highs – which makes changing from bright to dark guitars a breeze. The Plexi-Drive Deluxe also features a one knob, pre-gain boost soft click switch that is voiced like that "famous overdrive with pronounced mids” – to help push your leads in to overdrive.
To this day, the original Plexi-Drive is still one Brian’s favorite pedals and never left his personal pedal board. For a man who is said to be never satisfied with his tone, the Plexi-Drive has stayed with him throughout and is still inspiring him gig after gig, the Deluxe is taking on that tradition and running with it.
The Plexi-Drive Deluxe will fill your Marshall® void and give you the crunch, response, boost and feeling that your rig begs for. Whether you are playing sold out shows or rocking out by yourself – the Plexi-Drive Deluxe will take your tone and allow you to create your own flavor of rock!
Your search for the perfect M.I.A.B. (Marshall® in a Box) can finally be over.
(description lifted from Wampler website)