Dual Digital Delay SDE3 Boss

The SDE-3 fuses vintage digital character and wide-ranging versatility into one unique and inspiring BOSS compact pedal. Experience the genuine sound and core features of the Roland SDE-3000, an iconic ’80s-era rackmount delay favoured by some of the most influential guitarists of all time. Flow into any creative setup with a slate of modern features. And twist the powerful Offset control to explore an array of colourful dual-delay textures.

FEATURES

The iconic character of the Roland SDE-3000 rackmount delay in a BOSS compact pedal

Beautiful vintage digital delay tones with expanded creative range

Distinctive modulation with independent Rate and Depth knobs

Hi Cut control for shaping the high-frequency amount

Variable Offset feature for creating unique sounds with a secondary delay line

Adjustable maximum delay time: 800 ms (mono/stereo) or 1600 ms (mono)

Two stereo delay options: panning and discrete stereo

Versatile output modes: stereo, wet/dry, and dry mute (mono or stereo)

Tap tempo and carryover functions

Jack for extended control with up to two footswitches or an expression pedal

TRS MIDI input for syncing to external MIDI clock signals

BOSS five-year warranty

Compact Legend
Introduced in 1983 by our parent company, Roland, the SDE-3000 is revered for its beautifully rich sound and distinctive modulation. The coveted SDE tone was realized through a finely tuned digital engine and the non-linear behaviours of the supporting analogue circuitry, including magnetic saturation in the anti-alias filter, evolving modulation produced by the components of the time, and an altered triangle LFO shape. The SDE-3 brings the authentic vibe of this classic delay to a pedalboard-friendly BOSS compact, enhanced with innovative creative features for every musical style.

Vintage Colour and Character
Dripping with warmth and musicality, the SDE-3 elevates your tone with endlessly evocative delay sounds. The efficient panel provides the primary controls of its vintage benchmark—including delay time, feedback, and independent rate and depth knobs for the modulation—plus additional knobs that expand your sonic potential. Explore retro single delays and ’80s-style mod/delay combos. Or tweak the mod and high-cut controls to conjure moody, atmospheric tonalities for ambient, chill, and lo-fi music.

Offset Magic
Along with reproducing the SDE-3000’s famous mono sound, the SDE-3 includes a powerful Offset feature to create interesting tones with two simultaneous delays. With one simple control, you can instantly add a second delay to the primary delay for a wealth of mono and stereo colours.

Doubled Delays—Turning the Offset knob up to its centre position introduces a second delay that’s 1–100 ms longer than the primary delay. For example, if the primary delay is 400 ms and the Offset is 10 ms, the second delay’s time is 410 ms. Coupled with the SDE-3’s time, feedback, and highly adjustable modulation controls, you can craft deep delay tones unavailable with typical delay pedals.

Timed Dual Delays—In the second half of its range, the Offset knob produces a shorter second delay that’s based on the primary delay time. Use the pedal’s tap tempo function to determine the quarter-note value for the primary delay. Next, turn the knob to sweep the second delay’s time between eighth-note and dotted-eighth subdivisions. This lets you introduce a variety of rhythmic effects that sync with your music.

Multiple Output Modes
The versatile SDE-3 provides output configurations for any stage or studio scenario. Run it in mono for basic setups. Play in true stereo with discrete left/right delays or a panning mode for ultra-wide sounds that move across the stereo field. Send dry and direct feeds to two amps for wet/dry setups. Or mute the direct sound entirely for studio mixing and parallel effect rigs.

Modern Workflow
The SDE-3 offers numerous control options to enhance your performance. Press and hold the pedal switch to enable the tap tempo function. Or use the TRS MIDI input to receive clock sync signals from DAWs, pedals, and drum machines. Connect external footswitches for on-demand access to tap tempo and a hold function for on-the-fly looping. Alternatively, an expression pedal can be used to control the Level, Feedback, and Time knobs for delay mix adjustment, wild pitch effects, and dramatic self-oscillation.

SPECIFICATIONS

Sample Rate: 48 kHz

AD Conversion: 24 bits + AF method
AF method (Adaptive Focus method). This is a proprietary method from Roland & BOSS that vastly improves the signal-to-noise (SN) ratio of the AD and DA converters.

DA Conversion: 32 bits

Nominal Input Level
INPUT A (MONO), INPUT B: -20 dBu

Maximum Input Level
INPUT A (MONO), INPUT B: +7 dBu

Input Impedance
INPUT A (MONO), INPUT B: 1 MΩ

Nominal Output Level
OUTPUT A (MONO), OUTPUT B: -20 dBu

Maximum Output Level
OUTPUT A (MONO), OUTPUT B: +7 dBu

Output Impedance
OUTPUT A (MONO), OUTPUT B: 1 kΩ

Recommended Load Impedance
OUTPUT A (MONO), OUTPUT B: 10 kΩ or greater

Bypass: Buffered bypass

Controls

TIME knob

FEEDBACK knob

LEVEL knob

DEPTH knob

RATE knob

HI CUT knob

OFFSET Knob

Pedal switch

CARRYOVER switch

Indicator: CHECK indicator (Used for indication of Tempo and check battery)

Connectors
INPUT A (MONO) jack, INPUT B jack, OUTPUT A (MONO) jack, OUTPUT B jack: 1/4-inch phone type
CTL/EXP jack: 1/4-inch TRS phone type
DC IN jack
MIDI IN jack: Stereo miniature phone type

Power Supply
Alkaline battery: 9 V, 6LR61 or 6LF22, commercially available
AC adaptor: PSA series – sold separately

Current Draw: 75 mA

Expected battery life under continuous use (These figures will vary depending on the actual conditions of use.)
Alkaline: Approx. 4.5 hours

Dimensions
Dimensions: 73 (W) x 129 (D) x 59 (H) mm / 2-7/8 (W) x 5-1/8 (D) x 2-3/8 (H) inches
Weight (including battery): 450 g / 1 lb