As usual, Joranalogue's built quality is excellent, and the sound super tight and clean.
How can I rate the sound of an envelope/slew module, I hear you ask? Well first of all, you can cycle it at audio rate, making it a v/oct oscillator, and then yes, I do find that envelopes have a sound, when applied to a filter or VCA or whatever.
But the most remarkable aspect of it are the features: I know of no other envelope/slew module providing that level of discrete control over every aspect of its slopes, and in the end, that's really the reason why I have three of them.