Supro Delay

• Pedal Type: All-Analog Delay

• Controls: Level Knob, Time Knob, Filter Knob, Repeats Knob, Expression Assignable 3-Way Toggle Switch (Level/Time/Repeats), Bypass Footswitch

• Bypass Layout: Soft-Touch Click-Free True Bypass (with Internally Switchable Trails and Dry Kill)

• Power Requirements: 9VDC Center-Negative External Power Supply Only (Internal Voltage Doubling to 15V Rails)

• Current Draw: 100mA

• Dimensions: 3.2 x 3.2 x 4.9 inches / 80 x 80 x 125 mm

High-Voltage Analog Engineering and Howard Davis Lineage

Dual MN3005 Headroom Optimization and 15V Internal Power Rails

The core architecture of this high-fidelity echo station relies on a matched pair of new-production MN3005 Bucket Brigade Device integrated circuits. While typical modern delays run on low-voltage MN32XX series chips that clip easily under hot input signals, this design features an internal voltage-doubling circuit that scales standard incoming power up to stable 15-volt rails. This massive electrical headroom yields an exceptional signal-to-noise ratio, ensuring that your core instrument dynamics and complex pick attacks are preserved without turning into harsh solid-state clipping. Engineered by Howard Davis, the mastermind behind the iconic late-1970s Deluxe Memory Man, this pure analog signal path delivers between 20ms of tight slapback and 600ms of rich, organic echo.

Continuous Low-Pass to Band-Pass Tone Filtering and Expression Matrix

The control layout introduces advanced acoustic contouring via an innovative, newly designed single-knob Filter circuit. Rotating the Filter knob counter-clockwise from the center position engages a dedicated low-pass filter network, creating the dark, warm, and murky repeat structures characteristic of vintage analog delay tracking. Turning the knob clockwise transitions into a specialized band-pass filter that systematically shapes both the high and low frequencies, delivering the focused midrange and pristine treble degradation associated with classic tape echo machines. This filtering system is supplemented by a 3-way mini-toggle switch that maps an external TRS expression pedal directly to the Level, Time, or Repeats parameters, allowing you to manipulate real-time feedback or time-warped pitch changes on the fly.

Creative Rig Integration and Circuit Optimization

High-Headroom Pre-Amplifier Stacking and Transparent Time Alignment

In intricate pedalboard signal paths where high-output fuzz boxes and aggressive boost pedals are positioned upstream, this delay unit maintains structural signal integrity. Connect your instrument into your gain-stacking elements, and feed the final drive output straight into the 10M ohm high-impedance input of this unit. Dial the Time control to 10:00 for a structural rhythm division, position the Repeats to 9:00 to prevent muddy overlapping, and sweep the Filter knob counter-clockwise to 9:00. The 15V internal power rails process the heavily compressed, harmonically saturated clipping of your overdrive units smoothly, softening the high-frequency grit of the drive pedals while keeping the dry instrument signal crystal clear.

Real-Time Expression Manipulation and Evolving Ambient Soundscapes

For post-rock soundscapes, cinematic swells, or live ambient sound design requiring hands-free texture mapping, tap directly into the external control routing. Connect a standard TRS expression pedal to the dedicated side-mounted expression jack, and flip the 3-way toggle switch down to the Repeats setting. Set the physical Repeats knob to 11:00 to establish your base heel-down threshold, and dial the Filter knob clockwise to 2:00 to unlock bright tape-style tracking. By depressing the expression pedal toward the toe position during long chordal sweeps, you can manually push the Bucket Brigade chips right to the brink of self-oscillation, creating evolving, runaway wall-of-sound textures that stay controlled when you back off the pedal.

IMPORTANT ELECTRICAL AND OPERATIONAL WARNINGS: REGULATED 9VDC CENTER-NEGATIVE COMPATIBLE POWER SUPPLY REQUIRED ONLY. DO NOT ATTEMPT TO POWER THIS STOMPBOX WITH AC VOLTAGE OR ANY DIRECT CURRENT INTERFACE EXCEEDING 9VDC. THE APPLICATION OF IMPROPER VOLTAGE INPUTS WILL IMMEDIATELY VOID THE MANUFACTURER WARRANTY AND INDUCE PERMANENT COMPONENT BLOWOUT ALONG THE HIGH-VOLTAGE MN3005 BBD INTEGRATED CIRCUITS. THIS DEVICE IS DESIGNED SOLELY FOR EXTERNAL MAINS ATTACHMENT AND DOES NOT SUPPORT INTERNAL 9V BATTERY OPERATION. INTERNAL DIP SWITCH ADJUSTMENTS FOR TRAILS AND DRY KILL FUNCTIONS MUST BE ALTERED INDEPENDENTLY WITH THE EXTERNAL POWER SOURCE DISCONNECTED. WARNING: THIS PRODUCT CAN EXPOSE YOU TO CHEMICALS INCLUDING LEAD, WHICH ARE KNOWN TO THE STATE OF CALIFORNIA TO CAUSE CANCER, BIRTH DEFECTS, OR OTHER REPRODUCTIVE HARM.