MM4

The Line 6 MM4 Modulation Modeler is a versatile effects pedal designed for guitarists seeking a wide range of modulation effects. The pedal offers 16 different modulation effects, each modeled after iconic units such as the Phase 90, Leslie 147, CE-1 Chorus, MXR Flanger, and more. The pedal's features and technical specifications include:

- Dimensions: Length: 10 inches/25.4 cm, Width/Depth: 6 inches/15.24 cm, Height: 2.375 inches, Weight: 3.1 lbs
- Model Selector: Allows users to choose from the 16 available modulation models
- Speed Control: Adjusts the speed of the modulation effect
- Depth Control: Adjusts the intensity of the modulation effect
- Tweak and Tweez Controls: Unique controls specific to individual modulation models
- Mix Knob: Sets the mix between the dry/direct/unprocessed signal and the processed signal
- True Bypass & Alternate Bypass: Includes mechanically switching relays for true bypass and an alternate bypass mode for buffered bypass
- Expression Pedal: Supports an optional Line 6 expression pedal for foot control over effect parameters
- Power Supply: Can be powered by an optional Line 6 AC power supply or 4 C size batteries
- Factory Presets: Pre-programmed with a set of great tones, with the ability to restore factory presets
- Input/Output: Features standard 1/4 inch inputs and outputs, with an additional output for an expression pedal

The Line 6 MM4 Modulation Modeler provides guitarists with a comprehensive selection of modulation effects in a programmable stompbox format, offering flexibility and control over a wide range of classic and modern modulation tones.