Boss DR-670 Dr. Rhythm Digital Drum Machine User Manual

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Boss DR-670 Dr. Rhythm Digital Drum Machine Manual

Introduction to the Boss DR-670 Dr. Rhythm Digital Drum Machine

The boss DR-670 Dr. Rhythm Digital Drum Machine is a compact rhythm workstation designed for musicians who need practical drum and bass accompaniment without a computer. It combines a broad collection of drum and percussion sounds with dedicated bass sounds, velocity-sensitive pads, pattern programming, and song arrangement tools.

The unit provides 200 preset rhythm patterns and 200 user-programmable patterns, making it suitable for songwriting, rehearsal, live performance, home recording, music education, and practice. Patterns can be chained into songs, while direct pattern selection makes it possible to trigger grooves quickly during performance. The drum section includes 256 instruments, and the bass section includes 16 sounds for building complete rhythmic foundations.

Velocity-sensitive pads allow accents and dynamics to be programmed more naturally than with simple trigger-only drum machines. Roll and flam functions add additional performance expression for fills, repeated notes, and transitional patterns. MIDI input and output allow the DR-670 to communicate with compatible keyboards, sequencers, drum pads, and recording systems.

Battery operation makes the boss DR-670 Dr. Rhythm Digital Drum Machine useful for mobile practice, while stereo outputs, headphone connectivity, and footswitch support make it adaptable to studio and stage setups. It is best suited to guitarists, bassists, solo performers, arrangers, and producers who value hands-on operation and dependable pattern-based accompaniment.

Boss DR-670 Specifications and Features

Sound sources: 256 drum and percussion instruments plus 16 bass sounds.
Patterns: 200 preset patterns and 200 user-programmable patterns.
Songs: 100 song locations, with up to 250 patterns in one song.
Total song pattern capacity: Approximately 3,000 patterns across all songs.
Maximum note storage: Approximately 8,000 notes.
Maximum polyphony: Up to 20 voices, depending on the selected instruments and kits.
Pattern resolution: 96 pulses per quarter note.
Tempo range: 20 to 260 beats per minute.
Programming controls: Velocity-sensitive pads, roll function, flam function, and dedicated bass programming.
Connections: Left/mono and right outputs, stereo miniature headphone jack, stereo footswitch jack, MIDI input, MIDI output, and DC 9-volt adapter input.
Power: Six AA batteries or a compatible PSA-series AC adapter.
Power consumption: 200 mA or less.
Dimensions: 213 × 169 × 53 mm.
Weight: Approximately 750 g without batteries.

Detailed Boss DR-670 Product Description

The boss DR-670 Dr. Rhythm Digital Drum Machine uses a pattern-based workflow. Individual drum and bass notes are entered with the front-panel pads, then organized into patterns. Preset patterns can be used immediately, while user patterns can be edited to create custom intros, verses, fills, bridges, and endings.

The velocity-sensitive pads respond to playing force, allowing stronger hits to create accents and softer hits to produce more controlled grooves. Roll and flam controls help create realistic fills without requiring extensive manual editing. The direct pattern play function provides fast access to stored patterns during rehearsal or performance.

In day-to-day use, keep the machine on a stable, dry surface with adequate ventilation. Use a soft, dry cloth to remove dust from the housing and pads. Do not use abrasive cleaners, solvents, or excessive moisture. Disconnect power before cleaning, and remove batteries if the unit will be stored for an extended period. Avoid placing heavy objects on the controls or exposing the instrument to heat, humidity, or spilled liquids.

Boss DR-670 Setup Guide

Place the drum machine on a stable surface away from moisture, excessive heat, and strong vibration.
Install six AA batteries with the polarity matching the markings inside the battery compartment, or connect a compatible PSA-series 9-volt AC adapter.
Turn the volume of the connected amplifier, mixer, or headphones down before making audio connections.
Connect the left/mono output to a mono amplifier or mixer input. Use both left and right outputs for stereo operation.
For silent practice, connect stereo headphones to the headphone jack.
Connect MIDI input and output to compatible MIDI equipment when synchronizing or controlling external devices.
Connect an optional compatible footswitch for hands-free pattern control.
Turn on the DR-670, select a preset pattern, and gradually raise the connected audio system’s volume.
Set the tempo, choose a drum kit, and use the pads to audition sounds.
To create a user pattern, select an available user location, choose the recording mode, and enter drum or bass notes with the pads.

If there is no sound, check the output cable, volume settings, selected pattern, and power source. Never connect or disconnect cables with powered equipment at high volume. Use only a suitable adapter and keep ventilation openings unobstructed.

Boss DR-670 Troubleshooting Guide

No sound from the outputs

Confirm that the unit is powered on, the correct output jack is connected, the master volume is raised, and the amplifier or mixer input is selected correctly. Test with headphones to determine whether the issue is external audio equipment or the drum machine.

Patterns do not play

Check that playback has been started and that the selected pattern or song contains data. If a footswitch is connected, verify the cable type and assigned function. Recheck the tempo and pattern selection when using direct pattern play.

Unexpected MIDI behavior

Verify that MIDI OUT is connected to the receiving device’s MIDI IN and that both devices use compatible MIDI channel and synchronization settings. Disconnect other MIDI equipment temporarily to isolate the problem.

Unit will not power on

Replace all six batteries with matching AA batteries, checking polarity and battery condition. If using an adapter, confirm that it is a compatible PSA-series model and that the connection is firmly seated. Remove batteries when using external power if the owner’s manual for the adapter or unit requires it.

Preventive maintenance and support

Back up important patterns by documenting settings or transferring compatible MIDI data before servicing or resetting the unit. For model-specific procedures, consult the official DR-670 owner’s manual and MIDI implementation documentation. If a hardware fault remains, contact an authorized BOSS or Roland service center through the manufacturer’s support system. Avoid opening the enclosure, as internal servicing requires qualified technicians.

Boss DR-670 Pros and Cons

Advantages

Extensive pattern memory: 200 preset and 200 user patterns support both immediate playback and custom programming.
Dedicated bass section: Sixteen bass sounds help create complete rhythm-and-bass arrangements without another instrument.
Expressive programming: Velocity-sensitive pads, rolls, and flams provide more musical control than basic step-only rhythm devices.
Flexible connectivity: Stereo audio, headphones, footswitch, and MIDI connections suit practice, live performance, and recording.
Portable operation: Battery power and a compact enclosure make it practical for rehearsal rooms and mobile songwriting.
Song arrangement: Up to 100 songs and long pattern chains support structured performances.

Limitations

Older operating approach: Users accustomed to modern touchscreen sequencers may find menu navigation and pattern editing less immediate.
No modern computer integration: The unit relies on MIDI rather than USB audio or contemporary DAW-focused connectivity.
Limited sound expansion: Its internal sound set is fixed, so it is less flexible than software instruments or sample-based production systems.
Best for pattern-based music: Producers needing advanced audio recording, extensive effects, or detailed sample editing may need a newer workstation.

The DR-670 is a strong choice for musicians seeking a dependable standalone drum machine with bass accompaniment, hands-on pads, and straightforward live pattern control. A modern software setup may be more suitable for users who prioritize deep editing, USB connectivity, or large expandable sound libraries.

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Faqs

How do I set up the boss DR-670 Dr. Rhythm Digital Drum Machine for the first time?

Place the DR-670 on a stable surface, then connect its L/MONO output to an amplifier, mixer, or audio interface with a standard 1/4-inch cable. For stereo operation, connect both L and R outputs. Alternatively, use the stereo headphone jack for monitoring. Install six batteries or connect a compatible BOSS PSA-series 9V adapter, turn the rear-panel power switch on, and begin by selecting a preset pattern and adjusting the tempo.

Why is my boss DR-670 Dr. Rhythm Digital Drum Machine not producing any sound?

First, check that the power indicator and LCD are active. Confirm that the cable is connected to the correct L/MONO output, or that both stereo outputs are connected properly. Raise the DR-670 volume and the volume on the mixer, amplifier, or headphones. If using batteries, replace them if they are weak. Also verify that a pattern is playing or that a pad is being struck, because the unit will not produce continuous audio when playback is stopped.

Can I connect the boss DR-670 Dr. Rhythm Digital Drum Machine to a computer or MIDI keyboard?

The DR-670 includes MIDI IN and MIDI OUT connectors, so it can communicate with MIDI-compatible keyboards, sequencers, and computers through an appropriate MIDI interface. Connect MIDI OUT from the external controller to DR-670 MIDI IN when sending performance data to the drum machine. To record or control the DR-670 from a sequencer, connect DR-670 MIDI OUT to the sequencer’s MIDI IN. Audio still requires separate connections from the DR-670 outputs.

How can I program more expressive drum patterns on the boss DR-670 Dr. Rhythm Digital Drum Machine?

Use the velocity-sensitive pads rather than entering every note at one fixed intensity. Vary the strength of kick, snare, hi-hat, and percussion hits to create natural accents and dynamics. Start with a simple groove, then add bass parts, fills, and variations. The DR-670 provides preset patterns for reference and user-programmable patterns for original arrangements. Save each completed pattern carefully so later edits do not overwrite the wrong user location.

How do I use a footswitch with the boss DR-670 Dr. Rhythm Digital Drum Machine?

Connect a compatible footswitch to the DR-670 FOOT SW jack using the correct stereo 1/4-inch connection, then assign the desired footswitch function through the unit’s settings. A footswitch can provide hands-free control during rehearsal or performance, including functions such as start, stop, or fills depending on the selected assignment. If it does not respond, check the plug, confirm the assignment, and avoid connecting or disconnecting it while the unit is operating.

What should I do if the boss DR-670 Dr. Rhythm Digital Drum Machine resets or behaves unexpectedly?

Turn the DR-670 off, disconnect unnecessary cables, and restart it with a reliable power source. Weak batteries, an unsuitable adapter, or loose connections can cause unstable operation. If the problem occurs during MIDI use, disconnect the MIDI cables and test the unit by itself. Avoid connecting MIDI IN directly to MIDI OUT on the same device. Before performing a reset or data-clearing procedure, back up important user patterns because initialization can erase saved programming.

How can I get the best live performance from the boss DR-670 Dr. Rhythm Digital Drum Machine?

Prepare and test all patterns before the performance, then organize frequently used grooves for quick access with Direct Pattern Play. Use the L/MONO output for a mono sound system or both outputs for stereo monitoring. Keep tempo settings consistent and use the large LCD to confirm tempo during playback. A footswitch can make hands-free starts, stops, and fills easier. Connect headphones during setup to check transitions without sending unwanted sound to the audience.

How should I maintain and store the boss DR-670 Dr. Rhythm Digital Drum Machine?

Keep the DR-670 away from moisture, excessive heat, dust, and direct sunlight. Clean the casing and pads with a soft, dry cloth; do not spray liquid into the controls, jacks, or openings. Disconnect the adapter when storing the unit for an extended period, and remove batteries if it will not be used for a long time to reduce the risk of leakage. Protect the LCD, pads, and connectors from impact, and coil cables loosely to prevent jack damage.