According to its maker, the BalvenAmp — a cheap amplifier and speaker made out of an old box of 12-year single malt Speyside — "there's a lot of low-end distortion, but at low volumes the treble is actually quite clear." On the bright side, though, after you've finished draining the bottle of Balvenie necessary to make the thing, you won't be able to process one half of the audible spectrum anyways.
The Balvenie DoubleWood packaging has pictures of the two casks the whisky is aged in; the volume pot is coming out of the whisky cask, the gain pot is coming out of the sherry cask, and the guitar cord plugs into the Balvenie seal in the middle.
The speaker replaces the lid on top. Big thumbs up: I could make thirteen of these just from the detritus strewn around my work desk.