The ultimate in compact and versatile Californian combos comes to the MOOER MICRO PREAMP range. CALI MK IV re-creates 2 channels from one of the most famous modern-day session player combos. The clean channel is shimmering and bouncy and the gain channel can achieve purring blues tones, grinding crunch and soaring lead sounds. Micro Pre-amp 017 based on Mesa Boogie MK IV ® MOOER MICRO PRE-AMPs are sonically accurate digital recreations of the pre-amp sections of popular tube amplifiers. We have developed these by directly analyzing real tube amplifiers using a brand new technology to capture their sound, dynamics and response. Each Micro Pre-amp comes complete with dual channels, integrated speaker cabinet simulation and dual operating modes to suit the needs of all users. • High quality dual channel pre-amp • Independent 3 band EQ, Gain and Volume controls for each channel • Speaker cabinet simulation on/off • 2 different modes for foot-switch operation. On/Off or channel A/B Connections 1.DCIN: Connect a DC 9V 300mA centre pin negative power supply 2.INPUT: Connect your instrument directly or the output of your pre-amp effects like Overdrive, distortion, etc. 3.OUTPUT: Connect to a power amp or your amplifier’s effects return.(Highly recommend using a tube amplifier) Different power amplifiers will affect the outcome of the final tone.You can also connect directly to a sound card and activate the speaker cab simulation for recording purposes Note: You can connect your "fx loop" effects, like modulation and time based effects, in between the MOOER preamps output and the input of the power amp (fx return) 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. (not included) Highly recommend to use Mooer Power Supply）Current Draw:300mADimensions:93.5mm(D) x 42mm(W) x 52mm(H)Weight:160gNote: Power supply not included. Please use the 9V 300ma power adapter whose polarity is negative center otherwise, the product may not work properly. Package List: 1 * Effect Pedal 1 * User Manual(English & Chinese) 1 * Year warranty through our store No Duty to Canada and USA FAST 'N FREE USA Shipping (typically about 4 days) Ships from Canada (depending on stock availability, may also ship from our Niagara Falls NY. location)