bastl-instruments/basil

Basil

A compact, flexible digital stereo delay module built on the Bastl Pizza platform, offering clean delay and lo-fi flavors with a Space section for diffusion, feedback filtering, and multi-tap effects. Supports chorus, flanger, vibrato, pitch shifting, reverb, and stereo widening via modulation of the delay buffer.1126

Capabilities 1

Delaydelay: Stereo delay buffer with modulation, freeze, blur diffusion, feedback filter, multi-taps, and assignable CTRL for comprehensive time-based effects.1126

Jacks 8 (6 in / 2 out)

Name	Signal	Voltage	Description
Inputs (6)
CTRL CV	cv	-6V to 6V	Assignable CV input. When patched, the CTRL knob acts as an attenuverter for this signal. Destination is user-assignable.1126 Assignable destinations mirrors CTRL knob Delay time1126 Delay stereo spread1126 Delay fine adjustment1126 Speed1126 Dry/Wet1126 Feedback1126 Freeze1126 Lo-Fi1126 Blur1126 Filter1126 Taps1126 Blur and Filter and Taps1126
L IN	audio	—	Left audio input. When processing mono signals, plug here and the signal is copied to the right channel.1126
R IN	audio	—	Right audio input. Normalled to the left input when nothing is plugged in.1126
SPACE CV	cv	—	CV input that controls the currently selected SPACE flavor (BLUR, FILTER, or TAPS).1126
SYNC	clock	-6V to 6V	Analog clock input that synchronizes delay time to clock divisions. Active only when a cable is detected.1126
V/OCT	cv	—	Volts-per-octave input that controls delay time; doubling the voltage halves the delay time. Useful for melodic or Karplus-Strong applications.1126
Outputs (2)
L OUT	audio	—	1126
R OUT	audio	—	1126

Parameters 9

Name	Type	Range	Behavior
CTRL knob	knob	—	Assignable control that functions as a static offset or, when CV is patched, as an attenuverter. Destination is set via CTRL assignment mode.1126 Assignable destinations Delay time1126 Delay stereo spread1126 Delay fine adjustment1126 Speed1126 Dry/Wet1126 Feedback1126 Freeze1126 Lo-Fi1126 Blur1126 Filter1126 Taps1126 Blur and Filter and Taps1126
DELAY button	button	—	Short press cycles the DELAY knob between TIME and STEREO functions. Long press enters FINE adjustment mode; another short press exits.1126
DELAY knob	knob	—	Multi-function knob that sets delay TIME, STEREO spread, or FINE adjustment depending on the mode selected via the DELAY button.1126
DRY/WET	fader	—	Crossfades between dry input and fully wet delayed signal using a constant power curve. Leftmost position is fully dry, rightmost is fully wet.1126
FEEDBACK	knob	—	Right of center introduces equal feedback on both channels; left of center creates ping-pong routing where left and right channels cross-feed. A compressor and overdrive in the feedback path keep gain under control.1126 Zones Ping pong Normal feedback Ping pong -100–0%Left and right channels cross-feed on each feedback loop, enabling ping-pong delay and extended mono delay buffer length.1126 Normal feedback 0–100%Equal feedback on both left and right channels, creating standard repeating echoes.1126
FREEZE button	button	—	Activates freeze mode, treating the delay buffer as a read-only loop while disconnecting the input. Hold for more than 2 seconds to toggle LO-FI anti-aliasing filter off.1126
SPACE button	button	—	Short press cycles between BLUR, FILTER, and TAPS flavors. Long press enters CTRL assignment mode.1126
SPACE fader	fader	—	Controls the intensity and polarity of the currently selected SPACE flavor. Center is neutral; left and right produce different effects per flavor.1126 Zones Blur left Filter low-pass Taps odd and even Blur right Filter high-pass Taps even only Blur left -100–0%Diffusion occurs before the feedback path, affecting initial delays as well; adds slight low-pass filtering.1126 Filter low-pass -100–0%Applies a low-pass filter in the feedback path, removing high frequencies for a darker sound.1126 Taps odd and even -100–0%Adds both odd and even division taps as additional read heads in the delay buffer.1126 Blur right 0–100%Diffusion occurs within the feedback path, producing lush and resonant reverb-like character.1126 Filter high-pass 0–100%Applies a high-pass filter in the feedback path, removing low frequencies for bright, lush delays.1126 Taps even only 0–100%Adds only even division taps as additional read heads in the delay buffer.1126
SPEED button	button	—	Toggles between full and half sample rates. Hold for 2 seconds to enter extended RANGE mode toggling between quarter and eighth sample rates.1126

Firmware history 1 version

Version	Released	Notes
v1.0	—	First public release firmware. The RANGE light is ON at startup to indicate this version.1126

References 2

[1126]
Bastl Basil Manualmanual
source 1126 canonical ↗ archived ↗

● verified 2026-06-03
[1127]
Bastl Basil product pageproduct_page
source 1127 canonical ↗ archived ↗

● verified 2026-06-03