BOSS OS-2 OverDrive/Distortion Guitar Effects Pedal

BOSS OS-2 OverDrive/Distortion Guitar Effects Pedal

The BOSS OS-2 OverDrive/Distortion guitar effects pedal combines independent overdrive and distortion circuits in one compact stompbox. Its Color control moves from pure overdrive to pure distortion or blends both circuits in parallel, giving guitarists smooth breakup, heavier saturation, and hybrid drive tones without requiring two separate pedals.

The overdrive circuit uses asymmetrical clipping for responsive midrange character, while the dedicated distortion circuit delivers a tighter, more aggressive response. Players can use the OS-2 for edge-of-breakup rhythm sounds, classic rock crunch, saturated leads, and heavier guitar tones. Level, Tone, Drive, and Color controls keep adjustments straightforward while providing a broad range of gain textures.

Unlike pedals that simply stack two drive effects in series, the OS-2 can blend its overdrive and distortion circuits in parallel for added articulation. Buffered bypass supports reliable pedalboard integration, and standard 1/4-inch input and output connections fit conventional guitar rigs. Power comes from a 9V battery or an optional BOSS PSA-series AC adapter.

Key Features

• Dual Drive Circuits: Combines dedicated overdrive and distortion circuitry in one compact guitar pedal.
• Parallel Drive Blending: Mixes overdrive and distortion simultaneously instead of limiting players to a series-stacked configuration.
• Color Control: Selects pure overdrive, pure distortion, or any blend between the two drive circuits.
• Asymmetrical Overdrive: Produces responsive midrange character inspired by the clipping behavior of an overdriven tube amplifier.
• Dedicated Distortion Circuit: Adds tighter, punchier saturation for heavier rhythm and lead sounds.
• Wide Gain Range: The Drive control moves from subtle breakup to more aggressive distortion.
• Buffered Bypass: Maintains an active buffered signal path when the effect is switched off.
• Flexible Power: Operates from a 9V battery or an optional BOSS PSA-series AC adapter.

Technical Specifications

• Product Type: Overdrive and distortion guitar effects pedal
• Instrument: Guitar
• Drive Architecture: Independent overdrive and distortion circuits with parallel blending
• Nominal Input Level: -20 dBu
• Input Impedance: 1 M ohm
• Nominal Output Level: -20 dBu
• Output Impedance: 1 k ohm
• Recommended Load Impedance: 10 k ohms or greater
• Bypass: Buffered bypass
• Controls: Color, Drive, Tone, Level, and pedal switch
• Indicator: CHECK indicator with battery-status function
• Input: 1/4-inch phone jack
• Output: 1/4-inch phone jack
• Power Connector: DC IN jack
• Power Supply: 9V 6F22 carbon-zinc battery, 9V 6LR61 alkaline battery, or optional AC adapter
• Compatible AC Adapter: BOSS PSA series, sold separately
• Current Draw: 12 mA
• Carbon-Zinc Battery Life: Approximately 33.5 hours under continuous use
• Alkaline Battery Life: Approximately 55 hours under continuous use
• Dimensions (W x D x H): 2.9 x 5.1 x 2.3 inches
• Weight: 0.8 lb including battery
• dBu Reference: 0 dBu = 0.775 Vrms
• Warranty: Five years

What's In the Box

• BOSS OS-2 OverDrive/Distortion pedal
• 9V carbon-zinc battery
• Safety, important notes, and information leaflet