Blackstone's current standard product is a compact pedal called the Mosfet Overdrive. It provides two channels, each with its own drive and level settings, and true mechanical bypass.
Where the vast majority of overdrive pedals create distortion with a pair of head-to-toe diodes, the Mosfet Overdrive instead employs four gain stages, each contributing a small amount of soft clipping. This avoids intermodulation and the creation of fizzy high-order harmonics, just as in the best vintage amps. Those amps sound good in large part because the distortion does not occur at just one point.