The innovations of Berlin’s Basic Channel in the mid-’90s led to a whole new way of thinking about dance music, introducing countless producers to the possibilities of reverb and delay. Producers have been working off the template they set for dub techno ever since. Less often imitated is the duo’s work as Rhythm & Sound, where they slowed their music to reggae tempos and hewed closer to the Jamaican innovations that informed their trippy production tricks. This sound is having a small moment right now. Stuttgart’s Ghost Dubs has made a career of it, both solo and with a fired-up Kevin Richard Martin; Brussels’ Carrier shaped it into cavernous forms on last year’s awesome Rhythm Immortal; all the while, co-originator and close Rhythm & Sound collaborator…