I have two of these units. One is in a Quilter Travis Toy 12 combo and this one was purchased to power a 15" cabinet, also for use with pedal steel guitar.
These amps are physically very light and electrically very quiet with plenty of volume and a universal power supply that works everywhere. It can be used as a recording pre-amp without a loudspeaker connected, it has powerful 3-band EQ, three switchable basic voicings and all the in-out connectivity one could wish for, including speaker simulation for direct to the desk live or recording.
Quilter amps and combos are for everyone but have found particular favour with pedal steel guitar players. I suspect that this one is primarily aimed at guitarists and has been adopted by steelers following the excellent reputation of the Quilter Steelaire amp and Travis Toy's endorsement.
What this ToneBlock 202 misses for the steel guitarist is a mid range sweep EQ. I would happily swap the limiter for that. I also find that it tends to be overly bright, with insufficient Treble EQ range to darken the tone.
Overall, the ToneBlock 202 is an incredibly versatile and convenient amp, but its overall tonal character is a bit on the sterile side.