Authentic Tube Amp Tone

The Mooer 008 Cali MK3 Micro Preamp is a faithful digital recreation of the legendary Mesa Boogie MKIII’s preamp section. Using MOOER’s proprietary sampling technology, this compact pedal delivers sonically accurate tones that replicate the dynamic range, harmonic detail, and punch of its tube counterpart. With high-gain power and exceptional clarity, it’s ideal for players who want vintage warmth and modern aggression in one device. Whether you’re chasing creamy leads or tight, heavy rhythms, the 008 Cali MK3 packs professional tone into a stompbox that’s ready for the stage, studio, or home practice rig—without lugging around a full-sized amp.

Dual Channel Versatility Delivered

This micro preamp features two independent channels, each with its own Gain, Volume, and 3-band EQ controls—giving you full tonal freedom. Switch between sparkling clean tones and saturated distortion with the tap of a foot. The onboard cab simulation switch lets you plug directly into mixers, audio interfaces, or powered speakers without needing a traditional amplifier. Dual operation modes allow footswitch toggling between on/off or channel A/B for seamless transitions. Whether you’re layering ambient textures or cranking high-gain solos, the Mooer 008 offers the control and character needed to match your unique playing style and musical genre.

Flexible Connection Options

Connecting the Mooer 008 to your rig is a breeze. Plug your guitar or overdrive/distortion pedals into the input jack, and send the output either to a power amp, amp FX return, or directly into a recording setup with the cab sim engaged. This level of flexibility means you can run it as part of a traditional pedalboard or as a complete rig replacement when paired with a power amp or speaker sim. Powered by a 9V DC center-negative adapter with at least 220mA, the 008 ensures clean, stable performance even in high-gain settings, giving you professional reliability on any stage.

Features

• High quality dual channel preamp
• Independent 3 band EQ, Gain and Volume controls for each channel
• Speaker cabinet simulation on/off
• 2 different modes for footswitch operation. On/Off or channel A/B
• 008 is based on Mesa Boogie MKIII 

Specifications

• Modes : Delay and reverb effects with tap tempo functionality.
• Input : 1/4” mono audio jack.(Impedance: 1 meg Ohms)
• Output :1/4” mono audio jack(Impedance: 100 Ohms)
• Power requirements : AC adapter 9V DC , center negative.(Highly recommend to use Mooer Micro Power.)
• Current Draw : 220mA
• Dimensions : 93.5mm(D) x 42mm(W) x 52mm(H)
• Weight : 160g