It looks new. Only been used less than a few hours. Sometimes it only has been opened and tested.

BOSS MS-3 Multi Effects Switcher is a sonic powerhouse capable of running six internal pedal effects at once while seamlessly integrating three of your favorite external pedals. It also offers deep rig control capabilities, allowing you to switch amp channels, adjust effects in real time, work with MIDI devices, and more. With the BOSS MS-3, it’s easy to create a portable board or fly rig without the compromises associated with traditional loop switchers and all-in-one multi-effects units.

Powerful integrated solution for creating a compact professional pedalboard

Unlimited sound creation with six simultaneous pedal effects and audio loops for connecting three external pedals

112 built-in effects types for guitar and bass, including delays, reverbs, mod/pitch effects, overdrives, distortions, and more

Intuitive user interface for easy patch creation

Backlit LCD, editing knobs, and panel LEDs for on/off status of loops and effects

Control assign, wave pedal, and other functions for deep real-time expression

Equipped with numerous jacks for amp channel switching, effects control, and more

MIDI output for working with MIDI-enabled effects

Built-in tuner, noise suppressor, and global EQ

USB for patch creation and backup via free MS-3 Editor/Librarian software

Modes: Memory mode/Manual mode

Loops: 3

AD Conversion:
24 bits + AF method
AF method (Adaptive Focus method) This is a proprietary method from Roland & BOSS that vastly improves the signal-to-noise (SN) ratio of the AD and DA converters.

DA Conversion: 24 bits

Sampling Frequency: 44.1 kHz

Effects: 112 types

Patches: 200

Nominal Input Level:
INPUT: -10 dBu
LOOPS L1–3 RETURN: -10 dBu

Maximum Input Level:
INPUT: +7 dBu
LOOPS L1–3 RETURN: +7 dBu

Input Impedance: INPUT: 1 M ohms

Nominal Output Level:
OUTPUT L/MONO, R: -10 dBu
LOOPS L1–3 SEND: -10 dBu

Output Impedance: OUTPUT L/MONO, R: 1 k ohms

Recommended Load Impedance:
OUTPUT L/MONO, R: 10 k ohms or greater
LOOPS 1–3 SEND: 10 k ohms or greater

Controls:
Number switches 1–4, MEMORY/MANUAL switch
ON/OFF button, MENU button, EDIT button, EXIT button, ENTER button
1–3 knobs
POWER switch

Display: Graphic LCD (132 x 32 dots, backlit LCD)

Indicator:
Number indicators 1–4, MEMORY/MANUAL indicator
On/Off indicators (FX1, MOD1, L1–3, FX2, MOD2, DLY, REV)

Connectors:
INPUT jack: 1/4-inch phone type
LOOPS L1–3 SEND jacks: 1/4-inch phone type
LOOPS L1–3 RETURN jacks: 1/4-inch phone type
OUTPUT (L/MONO, R) jacks: 1/4-inch phone type
CTL OUT CTL1/2 jack: 1/4-inch TRS phone type
CTL IN EXP1 CTL1/2 jack, CTL IN EXP2 CTL3/4 jack: 1/4-inch TRS phone type
USB COMPUTER port: USB type B
MIDI OUT connector
DC IN jack

Power Supply: AC adaptor

Current Draw: 280 mA

Accessories:

AC adaptor
Rubber feet x 4
Owner’s manual
Leaflet “USING THE UNIT SAFELY”

Options (sold separately):

Footswitch: FS-5U, FS-5L, FS-6, FS-7
Expression pedal: EV-30, FV-500L, FV-500H, Roland EV-5

Width: 275 mm; 10-7/8 inches

Depth: 97 mm; 3-7/8 inches

Height: 68 mm; 2-11/16 inches

Weight: 1.1 kg; 2 lbs 7 oz