Multi-Effect / Modeler (Amp + Cab Simulator / IR loader) · $449.99
The Walrus Audio Mako ACS1 MkII Amp + Cab Simulator is a digital amp + Cab Simulator / IR loader pedal based on the DSP (Walrus MDSP module), with 6 amp models (Fullerton, London, Dartford, Red, Citrus, Tread) and 12 cab IRs (Tone Factor / York Audio); loads user IRs. Independent L / R / L+R amp+cab routing via middle encoder; Amp EQ (Presence, Resonance), noise gate; dual push-encoders + 2in OLED menu controls, made in USA. Features stereo I/O, MIDI, 128 presets. From $449.99.
| Category | Multi-Effect / Modeler (Amp + Cab Simulator / IR loader) |
| Circuit / based on | DSP (Walrus MDSP module) |
| Signal | Digital |
| Controls | 6 amp models (Fullerton, London, Dartford, Red, Citrus, Tread) and 12 cab IRs (Tone Factor / York Audio); loads user IRs. Independent L / R / L+R amp+cab routing via middle encoder; Amp EQ (Presence, Resonance), noise gate; dual push-encoders + 2in OLED menu |
| Switches | Amp/cab select, bypass IR or amp, and secondary parameters via encoders / OLED menu |
| Footswitches | 2 (Bypass, Boost) |
| Bypass | True / Buffered (selectable) |
| True bypass | Yes |
| Presets | 128 |
| MIDI | Yes |
| Stereo | Yes |
| I/O | Stereo: Input Left (mono) / Input Right, Output Left (mono) / Output Right; 1/8" TRS MIDI In + MIDI Thru; USB-C (IR loading + firmware) |
| Power | 9V DC (center negative) |
| Power draw | 300 mA |
| Dimensions | 4.89" x 2.9" x 2.48" (D x W x H) |
| Weight | 0.8 lbs |
| Country of manufacture | USA |
Closest matches from other makers, by spec and circuit.