D-Bass Amplifier

Impressive Bass Tone in An Ultra-Compact Cabinet.

  • FFP
  • COSM

Impressive Bass Tone in An Ultra-Compact Cabinet.

The Roland D-Bass Amplifiers are the world's first digital bass amps, giving you a wide range of killer tones, programmable memories and incredibly clean, punchy output in the distinct designs. The D-Bass amps combine proprietary Feed Forward Processing (FFP) and COSM amp modeling technology to deliver fat tube and solid-state sounds that can be stored and recalled with the press of a button. The DB-500 is the perfect compact amp for recording sessions and club gigs. It combines a 160-watt amp section with a 12-inch speaker and horn tweeter for maximum portability.

  • - Digital modeling bass amplifier with Feed Forward Processing (FFP) technology for rich, powerful output
  • - COSM modeling of Solid State, Tube and Tube Drive amps and Compression effects
  • - Split-frequency D-Chorus effect with dynamics sensitivity
  • - Shape controls specifically tailored to bass guitar
  • - Program memory for instant setting memory recall via footswitch 160W total output power with 12”speaker and horn tweeter
  • - Simple operation via knob-based controls

Big Output in A Compact Package

The secret to the D-Bass Amps' high output is Roland's FFP amplifier technology. Using FFP, the compact, digitally controlled D-Bass Amplifiers can precisely predict and adjust the response characteristics of amplifier and speaker output before the bass signal reaches them. The result is a significant increase in efficiency over conventional amplifiers—which feed the output back to the input—allowing the D-Bass Amps to produce a clean, responsive, and surprisingly loud output far beyond their conservative power ratings; just one listen will prove this point beyond any doubt.

COSM Amp Modeling Inside

Improving amplifier efficiency is only half the D-Bass story; these amplifiers also incorporate Roland's COSM technology to deliver a range of exceptional bass tones. Through COSM amp modeling, Roland has recreated the best modern and vintage Solid State, Tube and Tube Drive (Overdriven) amp sounds and natural tube compression effects. Not merely sets of EQ curves, these sonic “models” can mathematically represent all the unique characteristics of the amp chosen. Thanks to COSM, there's never been a more flexible bass combo amp.

Analog-Style Control

Though their functions are actually quite sophisticated, D-Bass Amplifiers’ knob-based controls make dialing in just the right tone simple and intuitive. A three-band EQ section offers separate Bass and Treble adjustment, plus parametric midrange with Frequency and Level controls. A split-frequency, dynamics-sensitive “D-Chorus” effect applies rich chorusing to upper frequencies without muddying the all-important low end. And when you’ve created the sound you’re after, simply store your front panel settings into A and B program memories for instant recall via footswitch.

Built to Last

The D-Bass Amplifiers are crafted with premium components for years of rugged reliability. Recessed side handles and heavy-duty casters make them perfect for the road. A high-quality DI connector (XLR-type) is included for direct connection to PA systems or recording equipment, while additional XLR and 1/4” line outs—plus a dedicated insert jack and headphone jack—are perfect for PA systems, recording or practice.

160 W
12" (30 cm), Horn Tweeter
Input (High, Low), Direct Out (XLR), Line Out (XLR, Balanced Phone), Insert (Send, Return), Headphones, Foot Switches (TIP: A/B, Ring: Manual, Chorus)
Power Consumption
150 W (AC 117/230/240 V)
Foot Switch FS-5L (BOSS)

Size and Weight

Width (W)
515 mm20-5/16 inches
Depth (D)
335 mm13-3/16 inches
Height (H)
485 mm19-1/8 inches
23.5 kg51 lbs. 13 oz.

All specifications and appearances are subject to change.


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