A tape-style delay that recreates the warmth, motion and gentle degradation of real tape echo — with a deep modulation engine and creative controls that go well beyond a vintage emulation.
K7D isn't a static digital delay with a "tape" preset — it models the physical behaviours that make tape echo musical, and rebuilds them as discrete, controllable stages.
Interpolated pitch glide, in-loop saturation, feedback-path filtering, wow & flutter and analog-style hiss — each one a real stage in the signal path, not a faked artefact.
Real tape warmth, wow & flutter and self-degrading repeats — but with smooth musical filters, tempo sync and a full modulation engine layered on top.
1 ms to a full second of delay, feedback from 0 all the way to 200%, drive on the input and saturation inside the loop — controlled echoes or infinite swelling drones.
Keyboard-follow makes the delay track incoming MIDI pitch, turning echoes into tuned, playable resonator and comb textures from your keyboard.
The delay line reads with 4-point cubic interpolation off a fractional read head, so moving the Time knob bends pitch like spooling tape — never the zipper-click of a stepped digital delay.
A saturator sits inside the feedback loop, so each repeat is re-saturated. Echoes compress and thicken the longer they sustain — warmer and more worn than the last.
A low-pass and a high-pass filter live in the feedback path. The tail loses highs and lows with every pass — gentle 6 dB/oct curves that narrow the bandwidth instead of piling up.
Two independent pitch LFOs model speed instability — a slow Wow and a fast Flutter. From a gentle sway to a seasick warble.
A noise source is injected into the feedback loop, so cranked feedback and self-oscillating washes pick up authentic analog-style hiss and grit.
Six waveforms — sine, square, saw, triangle, sample & hold and filtered S&H — drive Delay Time, Low-pass and High-pass, each with its own bipolar amount from −100% to +100%.
Stereo Spread offsets the right channel against the left, Ping-Pong bounces repeats across the field, a 50–100% width matrix sets the image, and inverting the LFO flips L/R for opposing modulation.
Verified students and educators get 50% off K7D and the effects bundle — same features and updates.
iPad and iPhone versions are sold separately on the App Store. AUv3 in Logic, GarageBand, Cubasis, AUM and more.
Universal Binary. AU, VST, VST3. ~225 MB download.
64-bit. VST, VST3. ASIO recommended for low-latency monitoring · ~74 MB download
Available as standalone and AUv3. Use it in your preferred mobile host · ~113 MB download
Every parameter, every routing option, every shortcut. Searchable, with diagrams and signal-flow walkthroughs of the tape engine.
Read the manual →Video tutorialsStep-by-step videos covering wow & flutter, in-loop saturation, dub-style feedback and the mix recipes our team reaches for.
Open YouTube →SupportStuck on a licence, a mapping or a patch? Open chat — we usually answer the same day, in English or Portuguese.
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