US
BOSS

BOSS Dr. Beat DB-90 Metronome Bundle

  • Five note values mixed by level for custom beats
  • Four click sounds, including human voice counting
  • PCM drum patterns for rhythm practice
  • MIDI IN for syncing an external sequencer
  • 2 PHONES jacks, stereo 1/4 inch and stereo mini
  • 9V battery included, or PSA series AC adaptor
  • Auto power off after 60 min
  • Headphones and polishing cloth added in the bundle

Updated 20 days ago · Based on the Amazon listing and published specifications, not hands-on testing.

Our verdict

A full-featured practice metronome with drum patterns, a voice count and MIDI sync for guitarists, bassists and drummers. The AC adaptor is not part of the accessory list, so battery power is what ships.

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ASIN: B0CJY5J99BModel: AUS-DB90-COMBO-STD-2Category: Metronomes

Overview

Front-panel sliders, buttons and a large rotary dial run the BOSS Dr. Beat, giving hands-on control of every parameter. Its note mixing function blends several note values into new beats, while realistic drum patterns and a voice-counting click help a player track the bar.

Practice depth is the reason to buy: layered subdivisions, drum grooves, two headphone outputs and MIDI sync go well past a basic click. Tempo range and display details beyond the LCD are not given in the listing.

Who it's for

Guitarists, bassists and drummers working on timing and feel get the most from its mix of subdivisions and grooves. Someone who wants a plain beep on a music stand will find more controls than needed.

Pros and cons

Pros
  • Note mixing builds custom subdivision patterns
  • Voice-counting click marks the bar
  • Realistic PCM drum patterns
  • MIDI IN syncs an external sequencer
Cons
  • AC adaptor absent from the accessory list
  • Tempo range not listed
  • Many controls for someone wanting a simple click

Performance notes

Timing guidance comes from how the click and patterns are layered: each note value has its own level, so subdivisions can be brought forward or pushed back in the mix. The voice count and tempo LEDs add cues beyond the beat itself, and the MIDI input lets an external sequencer drive the timing.

Specifications

BrandBOSS
ModelAUS-DB90-COMBO-STD-2
Dimensions & fit
Item weight1 pound
Product dimensions6.5 × 4.8 × 1.5 inches
SizeDB-90
Power & efficiency
Battery typeAlkaline, 1 9V Battery Included
Auto power offAfter 60 min
Power supplyDC 9V: dry battery (6LR61/9V, 6AM6/9V) or AC adaptor (PSA series)
Construction & materials
Color NameBlack
Other details
Click soundsFour, including human voice counting
Current draw85 mA or less (reference tone), 190 mA or less (signal to INPUT)
DisplayLCD, tempo indicator LED x 2

Frequently asked questions

How big is the BOSS DB-90 Dr. Beat?

The product dimensions are listed as 6.46 x 4.8 x 1.5 inches. The description gives 4-13/16 inches wide, 6-1/2 inches deep and 1-1/2 inches high, with a weight of 1 lb.

Does the BOSS DB-90 come with an AC adaptor?

No AC adaptor appears in the accessory list. It ships with a 9V battery and can also run on a PSA series AC adaptor.

Can the BOSS DB-90 sync to an external sequencer?

Yes. The description says it has a MIDI IN connector for syncing an external sequencer.

What is in the Austin Bazaar bundle with the BOSS DB-90?

Besides the metronome with its battery, soft case, owner's manual and Boss nut, the bundle adds a pair of headphones and an Austin Bazaar polishing cloth.