128× oversampling Signal processing 32−bit Display 128x32 dot matrix LCD Input INPUT Standard mono phone jack | Rated input level: -20 dBu | Input impedance (line): 470 kΩ AUX IN Stereo mini jack | Rated input level: -10 dBu | Input impedance (line): 1kΩ Output OUTPUT Standard stereo phone jack (combined line/headphone) | Maximum output level: Line +2 dBu (10 kΩ or more output impedance) | Headphones 17 mW + 17 mW (32Ω load) Additional Specifications Input S/N 120 dB Noise floor (residual noise) -97 dBu Power Power AC adapter: 9V DC 500mA center negative (ZOOM AD-16) | 4 AA batteries (about 18 hours continuous operation time when using alkaline batteries with the LCD backlight off) USB Connector: USB2.0 Micro-B Guitar Lab | Standard: USB 1.1 Full Speed Supported cable: USB2.0 Micro-B cable | Use cables for data transfer. | Power can also be supplied through the USB port. | When using a cable designed only for power， power and connection to ZOOM Guitar Lab Specs General Specifications Maximum number of simultaneous effects 5 User patches 50 Sampling frequency 44.1 kHz A/D conversion 24-bit， editing and managing effects and patches ● 68 built-in rhythm patterns which can be used in conjunction with the Looper ● 50 memory locations for storing user-created patches ● Auto Save function for automatic saving of all patch parameters ● Onboard chromatic tuner supports all standard guitar tunings， with alkaline battery life of 18 hours ● USB port for firmware updates， other USB functions cannot be used. External dimensions G1 FOUR | Height: 156 mm (D) × 130 mm (W) × 42 mm (H) | Weight: 340 g (excluding batteries) G1X FOUR | Height: 156 mm (D) × 216 mm (W) × 52 mm (H) | Weight: 610 g (excluding batteries) ， chained together in any order ● Looper for recording up to 30 seconds / 64 beats of CD-quality audio with seamless start and end times ● ZOOM Guitar Lab software for creating。
Learn more about the G1 Four and G1x Four TWO PEDALS. ENDLESS SOUNDS. G1 Four / G1x Four Features ● G1 FOUR offers over 60 built-in effects ● G1X FOUR offers over 70 built-in effects ● 13 amp models for simulating classic rigs ● Up to 5 effects can be used simultaneously， 128× oversampling D/A conversion 24-bit。
including open and drop tunings ● Input jack accepts standard mono guitar cable (both active and passive instruments supported) ● Auxiliary input jack for connection of personal music players ● Output jack for connection to amp or headphones ● Runs on 4 AA batteries，。