The Roland SDE-1000, an early digital delay line, one of the Rolands first ventures into effects units.

The SDE series offers user-friendly and straightforward operation, featuring a simple front panel and interface. The influence of the SDE-1000 and SDE-2000 can be observed in contemporary products from Korg and Yamaha.

The unit delivers a smooth, analog-like sound that was well-regarded at the time, and surely still is now. The maximum delay time ranges from 374 mS to 1210 mS, with the ability to adjust the clocking for extended delay time.

The SDE-1000 has a 4-digit blue fluorescent display to indicate the delay time, with convenient controls to adjust the settings. The VCO offers speed and depth controls, allowing users to create deep chorusing effects or subtle shifting delays with phasing. The SDE-1000 includes memory slots to store user presets.

PSU works on 240V, EU power cord attached.

Key Features and Characteristics:
Sound: Often described as having an analog feel, with a "dirty" or "gritty" character compared to later, cleaner digital units.
Delay Time: Offers up to 1125ms of delay.
Modulation: Includes rate and depth controls for chorus/flanging effects.
Memory: 4 user-storable memory presets.
Interface: Features a 4-digit blue fluorescent display with up/down controls for precise settings.
Connectivity: Includes MIDI for patch changes and a "x1.5" rear-panel control for extended delay times. 
The SDE-1000 was designed as a more accessible version of the SDE-3000, offering professional-grade, high-quality delay in a compact package.
Key Specifications & Features:
Delay Time: 0-1125 ms (x1) or 0-1125 ms (x2) with 0.1ms precision.
Memory: 4 user-storable presets.
Modulation: Internal LFO for chorus and flanging effects.
Audio Quality: 12-bit processing, 20Hz - 20kHz frequency response.
Controls: Input attenuation, Delay time (x1/x2), Feedback, Modulation (Rate/Depth), Output Mix.
I/O: 1/4" Input, Output, Mixed Output, 5-pin MIDI In/Out, and several footswitch jacks (Preset, Playmate/Tap Tempo, Hold, Delay On/Off).
Dimensions: 1U rack-mountable, 19" wide. 
Vintage Digital
Vintage Digital
+5
Key Features & Characteristics:
Warm Sound: Uses 12-bit, non-linear companding AD/DA conversion, giving a slightly lo-fi, warm character loved for vocals and instruments.
"Playmate" Feature: Includes a jack for foot-pedal operated tap tempo.
"Hold" Function: Allows for short, repetitive, looping, or sound-on-sound effects.
MIDI Control: Enables remote patch changes.