MOOER MICRO PREAMP series pedals are sonically accurate digital recreations of the preamp sections of popular tube amplifiers. We have developed these by directly analyzing real tube amplifiers and using a brand new technology(Inteligent Amplifier Modeling) to capture their sounds, dynamics and response. Each MICRO PREAMP pedal comes completely with dual channels, integrated speaker cabinet simulation and dual operating modes to suit the needs of all users.Features:British crunch preamp pedal with dual channels A/B.With gain and volume controls for each channel.Independent 3-band EQ(Treble, Middle, Bass) adjusting.Supports speaker cabinet simulation function.True bypass, full metal shell, durable and sturdy.Features:Material: MetalInput: 1/4" Monaural Jack (impedance: 1M ohms)Output: 1/4" Monaural Jack (impedance: 100k ohms)Power Supply: DC 9V (Center negative)(not included)Working Current: 220mAItem Size: 9.2 * 3.8 * 3.5cm / 3.6 * 1.5 * 1.4inItem Weight: 160g / 5.6ozPackage Size: 10.5 * 6 * 5cm / 4.1 * 2.4 * 2inPackage Weight: 190g / 6.7ozNote:The power adapter is not included.Please use the power adapter whose polarity is positive pole outside and negative pole inside. Otherwise, the product may not work properly.Package List:1 * Effect Pedal1 * User Manual(English & Chinese)