You can look at it in one of two ways, either it’s a 50w version of the AD100vt or 2x12 version of the AD50vt its your choice.
Vox AD50VT 212, 50W VALVETRONIX Guitar-Combo, 2 x 12" Speaker, 11 Ampmodels with Vox "Valve-Reaktor"-circuit, 9 Effects like Auto Wah, Compressor, Phaser etc.), 11 presets, 2 Channels, Line-Out, ext. Speaker Headphone- and Footswitch Jacks, Footswitch not included