Powered by advanced BOSS technology, the ultra-versatile MD-500 delivers nearly any type of modulation effect a musician could want, and then some. Included are 28 different algorithms with intensive programming parameters, offering a nearly limitless sound palette to create with. And with class-defying 32-bit AD/DA, 32-bit floating point processing, and 96 kHz sampling rate throughout, you’ll enjoy pristine sound quality that extends beyond the capabilities of the very best studio hardware.

Effects in the MD-500 include many new Prime types developed with cutting-edge BOSS tech, plus authentic sonic recreations of vintage classics like the CE-1 Chorus Ensemble, Roland Dimension D, ‘70s script phaser, ‘80s tri-chorus, and numerous others. With the ability to use two patches at once with A/B Simul mode, the MD-500 can likely cover all your mod needs with one convenient pedal. And by inserting drive pedals in the MD-500’s flexible external loop, it’s easy to place mod effects before, after, or around the loop as needed for the very best sound.

  • Studio-level sound with first-in-class 32-bit AD/DA, 32-bit floating point processing, and 96 kHz sampling rate
  • 12 modes and 28 modulation types, all with deep editing parameters
  • Classic mod effects and BOSS originals, newly enhanced with cutting-edge technology
  • A/B Simul mode for using two patches at once, with your choice of series/parallel connection and mixed or split A/B output
  • Insert Loop function allows you to use mod effects before, after, or around drive pedals
  • Graphic LCD and intensive real-time control options
  • 297 onboard patch memories and hands-on controls
  • Selectable buffered-bypass or true-bypass operation
  • MIDI I/O for interfacing with MIDI control devices
  • USB-MIDI for connecting to the MD-500 Editor/Librarian or a DAW (to be available in early July 2017)
  • Runs on four AA-size batteries or PSA-series AC adapter

Roland Corporation Australia warrants to customers who purchase any Boss Compact Pedals from an authorised Australian Roland/Boss distributor that Boss Compact Pedals will be free of defects in workmanship and materials for the duration of Five (5) years or otherwise as specified in writing by Roland Corporation at the time of sale.

Sampling Frequency
96 kHz
AD/DA Conversion
32 bits
Processing
32-bit floating point
Modes
12 modes
CHORUS
FLANGER
PHASER
CLASSIC VIBE
VIBRATO
TREMOLO
DIMENSION
RING MOD
ROTARY
FILTER
SLICER
OVERTONE
Memory
198 (99 banks x 2 [A] [B]), 297 (99 banks x 3 [A] [B] [C])
Nominal Input Level
INPUT A/MONO, B: -10 dBu
Maximum Input Level
INPUT A/MONO, B: +8 dBu
Input Impedance
INPUT A/MONO, B: 1 M ohm
Nominal Output Level
OUTPUT A/MONO, B: -10 dBu
Maximum Output Level
OUTPUT A/MONO, B: +8 dBu
Output Impedance
OUTPUT A/MONO, B: 2 k ohms
Recommended Load Impedance
OUTPUT A/MONO, B: 20 k ohms or greater
Bypass
Buffered bypass or True bypass (with relays)
Controls
A switch, B switch, TAP/CTL switch
DOWN button, UP button, EXIT button, EDIT button
MODE knob, RATE/VALUE knob, DEPTH knob, E.LEVEL knob, PARAM 1 knob, PARAM 2 knob
Display
Graphic LCD (128 x 64 dots, backlit LCD)
Connectors
INPUT (A/MONO, B) jacks, OUTPUT (A/MONO, B) jacks: 1/4-inch phone type
CTL 1,2/EXP jack: 1/4-inch TSR phone type
USB COMPUTER port: USB type B
MIDI (IN, OUT) connectors
DC IN jack
Power Supply
Alkaline battery (AA, LR6) x 4, AC adaptor (sold separately)
Current Draw
225 mA
Expected battery life under continuous use
Alkaline: Approx. 4.5 hours
* These figures will vary depending on the actual conditions of use.
Accessories
Owner's manual
Leaflet "USING THE UNIT SAFELY"
Alkaline battery (AA, LR6) x 4
Options (sold separately)
AC adaptor: PSA-S series
Footswitch: FS-5U, FS-5L
Dual Footswitch: FS-6, FS-7
Expression Pedal: FV-500H, FV-500L, EV-30, Roland EV-5
SIZE AND WEIGHT
Width
170 mm
6-3/4 inches
Depth
138 mm
5-7/16 inches
Height
62 mm
2-1/2 inches
Weight (including battery)
1.0 kg
2 lbs 4 oz
SKU MD500
Barcode # 4957054511272
Brand Boss
Shipping Weight 2.0000kg
Shipping Width 0.300m
Shipping Height 0.300m
Shipping Length 0.300m
Shipping Cubic 0.027000000m3
Unit Of Measure ea

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