A multi-head tape delay: three read heads at different speeds, a reverse head, DOD Rubberneck-style pitch stretch, and degrading tape artifacts — all running from an SDRAM buffer.
Echo Chamber
Terrarium + Daisy Seed · Mono · SDRAM buffer
Multi-head tape delay with stretch and aging. Three read heads at different speeds (one fixed at the main delay time, two more switchable at 66% and 133% relative), reverse mode on the third head, DOD Rubberneck-style stretch, and degrading tape artifacts.
Knobs
Knob
Function
KNOB 1
Feedback (recirculation amount)
KNOB 2
Speed (delay time 50 ms – 2 s)
KNOB 3
Mix (extra heads blend level)
KNOB 4
Wet Level (0× to 2×)
KNOB 5
Dry Level (0× to 2×)
KNOB 6
Tone (LP filter on feedback path)
Switches
Switch
Function
SW1
Head 2 on/off (66% speed — faster echo layer)
SW2
Head 3 on/off (133% speed — slower echo layer)
SW3
Head 3 direction (forward / reverse)
SW4
FS2 mode selector — determines what the FS2 footswitch does (stretch / age)
Footswitches
Switch
Action
FS1
Bypass
FS2 (SW4 = stretch)
Pitch drop and rebound — DOD Rubberneck-style: hold = pitch drops smoothly, release = pitch rises back. Lets you "scratch" the delay buffer.
FS2 (SW4 = age)
Tape aging — adds dropouts, flutter, and noise to the extra-head signal while held. Sounds like the tape is degrading in real time.
Usage tip: For lush multi-tap echoes, raise Mix (KNOB 3) and switch on Head 2 (SW1) and Head 3 (SW2); flip SW3 to reverse Head 3 for backwards swells. Push Feedback (KNOB 1) toward max for self-oscillation, then roll Tone (KNOB 6) down to keep the runaway repeats dark. Set SW4 to stretch and hold FS2 to bend the buffer's pitch like a tape stop, or set it to age for crumbling, fluttery repeats.
Multi-head tape delay with stereo ping-pong heads — Head 1 panned left, Head 2 right, Head 3 center. Single mono SDRAM buffer keeps feedback structure identical to the Terrarium build; only the output mix is panned.
Knobs
Knob
Function
KNOB 1
Feedback
KNOB 2
Speed (50 ms – 2 s)
KNOB 3
Mix (extra heads blend)
KNOB 4
Wet Level
KNOB 5
Dry Level
KNOB 6
Tone
3-Position Toggles
SW1 — Head 2
Center / RightOff.LeftHead 2 on.
SW2 — Head 3 & Direction
CenterOff.LeftHead 3 forward.RightHead 3 reverse.
SW3 — FS2 Mode
CenterFS2 inert.LeftStretch.RightAge.
Footswitches
Switch
Action
FS1
Bypass (fires on release).
FS2
Momentary X (Stretch or Age per SW3).
FS1+FS2
0.5 s hold — Expression Set Mode.
FS1+FS2
2 s hold — clear expression mapping.
FS1+FS2
at power-up — DFU bootloader.
MIDI
Message
Mapping
CC 14–19
Knobs 1–6 (with takeover).
CC 20
Bypass (≥ 64 = bypassed).
CC 21
FS2 X latch.
Expression Jack
Defaults to KNOB 1 (Feedback) — sweep delay self-oscillation with a foot. Reassign via Set Mode.
LEDs
LED 1: X active.
LED 2: Engaged.
Echo Chamber
Hothouse + Daisy Seed · Mono · 3-position toggles
Multi-head tape delay (3 heads at speed / 66% / 133%) with 144K-sample SDRAM buffer. Stretch and Age effects on FS2. Footswitches reversed from Terrarium.
Knobs
Knob
Function
KNOB 1
Feedback (delay recirculation, 0–95%)
KNOB 2
Speed (delay time 50 ms – 2 s)
KNOB 3
Mix (extra heads blend — 0 = main only, max = all equal)
KNOB 4
Wet Level (0–2×)
KNOB 5
Dry Level (0–2×)
KNOB 6
Tone (feedback LP filter 200 Hz – 12 kHz)
3-Position Toggles
TOGGLE 1 — Head 2 (66% speed)
UpOn — Head 2 plays at 2/3 the main delay time.Middle/DownOff.
TOGGLE 2 — Head 3 (133% speed, direction-switchable)
UpOn, forward.MiddleOff.DownOn, reverse.
TOGGLE 3 — FS2 Mode
UpStretch — DOD Rubberneck-style pitch drop/rebound on FS2 hold.MiddleFS2 inert — pressing the footswitch does nothing.DownAge — dropouts, flutter, and noise on extra heads while FS2 held.
Footswitches (Hothouse convention)
Switch
Action
FS1 (left)
Bypass toggle.
FS2 (right)
X — Stretch or Age (per TOGGLE 3).
Usage tip: For lush multi-tap echoes, raise Mix (KNOB 3) and bring in Head 2 (TOGGLE 1) and Head 3 (TOGGLE 2); set TOGGLE 2 down to run Head 3 in reverse for backwards swells. Push Feedback (KNOB 1) toward max for self-oscillation and roll Tone (KNOB 6) down to keep the runaway repeats dark. Set TOGGLE 3 to Stretch and hold FS2 (right) to bend the buffer's pitch like a tape stop, or Age for crumbling, fluttery repeats.
LEDs
LED 1 (left): Engaged.
LED 2 (right): X active.
DFU
Hold FOOTSWITCH_1 for 2 s to enter the bootloader.
Multi-head tape delay with stereo ping-pong heads — Head 1 panned left, Head 2 right, Head 3 center. Single mono SDRAM buffer keeps feedback structure identical to the Terrarium build; only the output mix is panned.
Synth-optimized: Synth-optimized version with 12 dB input pad for line-level sources. Extended volume range.
Knobs
Knob
Function
KNOB 1
Feedback
KNOB 2
Speed (50 ms – 2 s)
KNOB 3
Mix (extra heads blend)
KNOB 4
Wet Level
KNOB 5
Dry Level
KNOB 6
Tone
3-Position Toggles
SW1 — Head 2
Center / RightOff.LeftHead 2 on.
SW2 — Head 3 & Direction
CenterOff.LeftHead 3 forward.RightHead 3 reverse.
SW3 — FS2 Mode
CenterFS2 inert.LeftStretch.RightAge.
Footswitches
Switch
Action
FS1
Bypass (fires on release).
FS2
Momentary X (Stretch or Age per SW3).
FS1+FS2
0.5 s hold — Expression Set Mode.
FS1+FS2
2 s hold — clear expression mapping.
FS1+FS2
at power-up — DFU bootloader.
MIDI
Message
Mapping
CC 14–19
Knobs 1–6 (with takeover).
CC 20
Bypass (≥ 64 = bypassed).
CC 21
FS2 X latch.
Expression Jack
Defaults to KNOB 1 (Feedback) — sweep delay self-oscillation with a foot. Reassign via Set Mode.
