KNOCK 2 is the rebuilt drum processor from Knock Audio, the brand of platinum producer and sound designer DECAP, known for the Drums That Knock sample series. Released on 3 November 2026, it puts six modules in one window: PUNCH, COMP, SATURATE, SUB, AIR and CLIP. It is $119 at Plugin Boutique until 1 December 2026 (from $149), and KNOCK 1 owners can upgrade for $49 with their settings carried over.
The chain is modular: switch any module off and drag the rest into the order you want. Each module has selectable character Modes and new MIX and INPUT controls. PUNCH is now a multiband transient shaper, COMP is a new multiband dynamics module modelled on several classic hardware compressors, and SATURATE adds GRIT, CREAM, BUMP and WEAR, with BUMP aimed at saturation thinning the low end.
SUB detects the kick and layers a tunable sub tone underneath, useful for tuning breakbeats to the key of a song, with new DUCK, COLOR and LO CUT controls. AIR becomes a dynamic EQ with stereo control, and CLIP adds a gain-reduction meter and CRUNCH, ROUND and FRESH modes. Around them sit the PURR flutter effect, a MAGIC button for new preset ideas, Zero Latency and Linear Phase modes, and much improved gain matching. The trade-offs: it is tuned to DECAP's modern hip-hop and pop drum sound, Windows gets no VST2, and the list price is close to FabFilter Saturn 2.
Our KNOCK 2 first look explains every module, the specs, pricing and how it compares with Saturn 2, Decapitator, Thermal and SPL Transient Designer Plus.