Pre-amp distortion is possible at low volumes, via amp attenuation. Amp distortion is possible at low volumes with a post-amp attenuator.
But speaker distortion is impossible at low volumes. Except where the speaker is in a soundproof enclosure. Some pro rockers use a soundproof room. Sound is transmitted through a microphone connected to an. External amp for listening at controlled volumes.But this soundproof "room" is in a home-sized box: 18"x18"x31. Install a 12 speaker (4 screws or wing nuts to install a speaker).
Install a microphone in the internal mounting unit. This item is in the category "Musical Instruments & Gear\Guitars & Basses\Guitar Amplifiers". The seller is "proyardsales" and is located in this country: US. This item can be shipped to United States, Canada.