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Boss DM-101 Delay Machine Pedal

The ultimate analogue delay stompbox! Featuring 12 unique modes, stereo connectivity & advanced modern features including MIDI, tap-tempo & much more!

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SKU: DM-101

Product Description

Rich vintage sound meets modern power with the DM-101 Delay Machine pedal from Boss! Driven by eight BBDs under smart CPU control, this hugely inspiring stompbox delivers 12 unique modes, stereo operation, and a wide array of tonal colours — all while maintaining 100% analogue signal processing throughout. And with 127 user memories, tap-tempo, carry-over, MIDI and much more, the Boss DM-101 brings you the features and versatility of an advanced digital pedal but with the vibrant, characterful sound that's only possible with authentic analogue BBD (bucket-brigade device) circuitry.

Key Features

  • The ultimate analogue delay pedal, realised with advanced Boss technology.
  • Fully-analogue BBD audio circuitry shaped by precision digital CPU control.
  • Produces warm, saturated and highly-musical tones, from vintage to modern.
  • Twelve modes deliver a wide range of mono and stereo delay textures, created using up to eight internal BBDs.
  • Stereo output with flexible signal routing options.
  • Adjustable modulation rate and depth with dedicated knobs.
  • Variation knob for controlling multiple parameters that are unique to each mode.
  • Selectable carry-over for maintaining delay trails when the effect is bypassed.
  • MIDI input and output on mini TRS connectors.
  • Tap-tempo function and tap-division switch for creating rhythmic delays.
  • Four onboard memories, plus the current panel settings.
  • 127 user memories accessible via MIDI program change.
  • Expandable control via external footswitches, an expression pedal, or MIDI.

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Analogue Delay for the 21st Century

Analogue delays based around BBD microchips emerged in the 1970s as a compact and cost-effective alternative to the standard tape delays of the era. Their warm, saturated, and highly-musical sound established a distinctive style of delay that remains favoured by many musicians and audio engineers. Leveraging modern CPU control, the DM-101 supercharges this classic effect with enhanced capabilities for today's music-makers.

Taking the analogue delay where it's never gone before, the Boss DM-101 provides access to cleaner sounds and extended delay times alongside traditional tones. To achieve this versatility, Boss used eight 2048-stage BBDs instead of the more common 4096-stage BBD. By finely tuning the behaviour of these smaller BBDs with targeted CPU control, they realised a far greater range of sound while retaining all the desirable analogue characteristics that players love about their favourite BBD stomps!

12 Flexible Delay Modes

  • Classic: Traditional, warm analogue delay sound extended with up to 1200 ms of delay time. Adjust the modulation behaviour by cycling through triangle, sine, and more complex waveform shapes with the Variation knob.
  • Vintage: Retro analogue delay sound inspired by the iconic Boss DM-2 Delay pedal introduced in 1981. Adjust the modulation behaviour by cycling through triangle, sine, and more complex waveform shapes with the Variation knob.
  • Modern: Uniquely-clear analogue delay sound with a distinctive high-end tone and up to 840 ms of delay time. Adjust the modulation behaviour by cycling through triangle, sine, and more complex waveform shapes with the Variation knob.
  • Multi-Head: Emulates a multi-head tape delay while imparting a uniquely-analogue BBD sound character. Use the Variation knob to cycle through 10 different head combinations.
  • Non-Linear: A distinctive effect that produces consecutive short delays (35–190 ms) that gradually increase in volume. The Variation knob allows you to control the delay times after the initial delay.
  • Ambience: Simulates a small space. Change the size and early reflections with the Variation knob.
  • Reflect: A stereo delay sound that produces a reverb-style effect. Adjust the pre-delay with the Variation knob.
  • Doubling + Delay: A stereo effect that combines a doubled sound with a longer delay. Use the Variation knob to balance the two sounds across the stereo output.
  • Wide: A stereo delay with offset left/right delay times for an expansive sound. Use the Variation knob to adjust the delay offset amount.
  • Dual Mod: A stereo delay with different modulation phase settings on the left and right outputs. Use the Variation knob to adjust the phase amount (the phase is fully inverted at the maximum setting).
  • Pan: A tapped stereo delay with different delay times distributed across the sound field. Use the Variation knob to fine-tune the delay time amounts.
  • Pattern: Stereo delay with different rhythmic patterns. Use the Variation knob to choose from the 10 available pattern types.


"They have made in my professional opinion, and I feel like I know delay so well the greatest analogue delay ever made, and you cannot buy anything that even touches this." — Josh Scott, JHS Pedals

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  • Memory: 127 + Manual
  • Nominal Input Level: -10 dBu
  • Input Impedance: 1 M ohm
  • Nominal Output Level: -10 dBu (Output A/Mono, Output B)
  • Output Impedance: 1 k ohm (Output A/Mono, Output B)
  • Bypass: Buffered


  • On/Off Switch
  • Memory Switch
  • Tap Switch
  • Mod Rate Knob
  • Mod Depth Knob
  • Variation Knob
  • Mode Knob
  • Delay Time Knob
  • Intensity Knob
  • Delay Volume Knob
  • Memory Button
  • Tap-Division Button


  • Input Jack, Output A/Mono Jack, Output B Jack: 1/4-Inch Phone Type
  • CTL 1, 2/EXP Jack: 1/4-Inch TRS Phone Type
  • MIDI (In, Out) Jacks: Stereo Miniature Phone Type
  • DC In Jack
  • USB Port: USB Micro B-Type (Program Update Only)


  • Power Supply: AC Adaptor (Included)
  • Current Draw: 260 mA

Weight & Dimensions

  • Dimensions (W x D x H): 192 x 133 x 52 (H) mm
  • Weight: 830 g


  • AC Adaptor
  • Owner's Manual
  • Leaflet ("Using the Unit Safely", "Important Notes" and "Information")
  • Rubber Feet (x4)

Options (Sold Separately)

  • Footswitch: FS-5U
  • Dual Footswitch: FS-6, FS-7
  • Expression Pedal: FV-500H, FV-500L, EV-30, Roland EV-5
  • MIDI/TRS Connecting Cable: BMIDI-5-35, BMIDI-1-35, BMIDI-2-35, BCC-1-3535, BCC-2-3535
Elliot Stent author picture

Written by Elliot Stent

Customer Reviews


8 reviews





Simon Owen12th Dec 2023

Woah, this is an awesome bit of kit. Cant wait to explore the possibilities

Value 4Looks 5Durability 5Sound 5

Mr Ed Wingfield3rd Dec 2023

Have a TC Flashback 2. Love that pedal. The Boss DM 101 is in a different league. What a pedal. I can see why the price is what it is. It's so easy to change the sound and modulation of the delay trails.1 slight little thing, when you change the memories there is a slight delay. Wouldn't change that pedal.

Value 4Looks 5Durability 5Sound 5

Mr HUGH Purves11th Nov 2023

Value 5Looks 5Durability 5Sound 5

Mr Terence OConnell12th Oct 2023


Value 5Looks 5Durability 5Sound 5

Mr. peter brown31st Jul 2023

Best delay pedal I own to date

Value 4Looks 5Durability 5Sound 5

Trusted Customer15th Jul 2023

Brilliant piece of kit. Fantastic tones. Huge range of varikations. Built like a tank (and weighs almost as much). Not cheap but when you have it you can see where the money has gone - lots of development work and the usual Boss quality. Can't honestly commenti on durability as I've had it for less than 2 weeks but it is Boss so I expect it to be great.

Value 4Looks 5Sound 5

Trusted Customer14th Jul 2023

Value 5Looks 5Durability 5Sound 5

Trusted Customer12th Jul 2023

What can I say about the Boss DM-101! It’s like having a DM-1 and DM-2 on steroids with extras and more!! The pedals sound us just analog bliss! Plus the modulation section is just great! Everyone needs to try one, it’s become my favourite delay pedal very fast

Value 5Looks 5Durability 5Sound 5

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