Shuttle 3.0: FET preamp, 300 watts/4 ohms
Shuttle 6.0: Single Tube preamp, 600 watts/4 ohms
Shuttle 6.2: Single Tube preamp, 600 watts/4 ohms, 3DPM output management and very slightly lower HPF
Shuttle 9.0: Single Tube preamp, 900 watts/4 ohms
Shuttle 9.2: Single Tube preamp, 900 watts/4 ohms, 3DPM output management and very slightly lower HPF
ShuttleMax 6.0: 2 channel (tube/FET) preamp, 600 watts/4 ohms
ShuttleMax 12.0: 2 channel (tube/FET) preamp, 2 x 600 watts/4 ohms (1200 watts equiv. into 2 x 4 ohm cabinets)
ShuttleMax 9.2: 2 channel (tube/FET) preamp, 3DPM output management, 900 watts/4 ohms
ShuttleMax 12.2: 2 channel (tube/FET) preamp, 2 x 600 watts/4 ohms (1200 watts equiv. into 2 x 4 ohm cabinets), 3DPM output management
Streamliner 600: 3 tube preamp, classic voicing, 600 watts/4 ohms, 3DPM output management
Streamliner 600: 9 tube preamp, classic voicing, 900 watts/4 ohms, 3DPM output management
Contour 500: FET preamp, 500 watts/4 ohms, only offered as a combo version though there was a head version on the drawing board until Fender shut the brand down.