L-20 FEATURES
20 discrete channels (16 mono plus 2 stereo) with XLR or ¼-inch connectivity
22-track simultaneous recording, 20-track playback
22-in/4-out USB audio interface connectivity
Records up to 24bit/96kHz audio to SD card
48V phantom power
Hi-Z connectivity (channels 1-2)
26dB pad (channels 3-16)
Built-in compression control (Channels 1-16)
Solo buttons for individual channels
Variable frequency low-cut control
Main outputs plus 6 customizable monitor outputs
Dedicated headphone output for sound engineer
Scene saving function, up to 9 scenes saved at a time
20 built-in chorus, delay and reverb effects with adjustable parameters
Two effect busses
Built-in slate mic
Class-compliant mode (for iOS compatibility)
Compatible with Remote Mixer app for iPad
Automatic recording starting/stopping capability
Pre-record function
Import/export projects with USB 2.0 host port
Compatible functions for ZOOM FS01 footswitch
Automatic power-save function

SPECS
NUMBER OF INPUT AND OUTPUT CHANNELS
INPUTS Mono (MIC/LINE): 16 Stereo (LINE): 2
OUTPUT MASTER OUT: 1 MONITOR OUT: 6 PHONES : 1
Inputs
MONO (MIC/LINE) Type: XLR/TRS combo jacks (XLR: 2 HOT, TRS: TIP HOT) Input gain : PAD OFF: +16 – +60dB| PAD ON: − 10 – +34 dB |Hi-Z ON: +6 – +50 dB Input impedance: XLR: 3 k Ω | TRS: 10 k Ω /1 M Ω (when Hi-Z ON) Maximum input level: PAD OFF: 0 dBu (at 0 dBFS) | PAD ON: +26 dBu (at 0 dBFS) |Phantom power +48 V
STEREO (LINE) Type: TS phone/RCA pin (unbalanced) jacks | Maximum input level : +10 dBu
OUTPUTS
MASTER OUT Type: XLR jacks (balanced) | Maximum output level :+14.5 dBu | Output impedance: 100 Ω
MONITOR OUT A–F (WITH BALANCED OUTPUT) CONNECTED TO MONITOR SPEAKERS Type: TRS phone jacks (balanced) | Maximum output level: +14.5 dBu | Output impedance: 100 Ω
MONITOR OUT A– F (WITH UNBALANCED OUTPUT) CONNECTED TO HEADPHONES Type: Standard stereo phone jacks |Maximum output level: 42 mW + 42 mW at 60 Ω |Output impedance: 100 Ω
PHONES Type: Standard stereo phone jacks|Maximum output level: 42 mW + 42 mW at 60 Ω |Output impedance: 100 Ω
BUSES
MASTER 1
MONITOR 6
SEND EFX 2
CHANNEL STRIP
COMP
LOW CUT 40–600 Hz, 12dB/OCT
EQ HIGH: 10 kHz, ± 15 dB, shelving | MID: 100 Hz – 8 kHz, ± 15 dB, peaking | LOW: 100 Hz, ± 15 dB, shelving
LEVEL METERS
LEVEL SEGMENTS 12
SEND EFFECTS
EFFECTS | 20 TYPES EFX 1 Hall 1, Hall 2, Room 1, Plate, Church , DrumAmb , GateRev, Vocal 1 , Vocal 2 , Vocal 3
EFX 2 Hall 3, Room 2, Spring Delay, Analog P-P Dly , Vocal 4, Chorus 1, Chorus 2
RECORDER
MAXIMUM SIMULTANEOUS RECORDING TRACKS 22 at 44.1/48/96 kHz
MAXIMUM SIMULTANEOUS PLAYBACK TRACKS 20
RECORDING FORMAT WAV 44.1/48/96 kHz, 16/24-bit, mono/stereo
RECORDING MEDIA 4GB–32GB SDHC cards (Class 10 or higher) , 64GB–512GB SDXC cards (Class 10 or higher)
AUDIO INTERFACE
44.1/48 KHZ Recording: 22 channels | Playback: 4 channels
BIT DEPTH 24-bit
INTERFACE USB 2.0
CARD READER
CLASS Mass storage : USB 2.0 High Speed
SYSTEM REQUIREMENTS FOR AUDIO INTERFACE MODE
WINDOWS OS: Windows® 8.1 ~ 11 (32bit/64bit) | CPU: Intel® Core i3 or faster* | USB: USB 3.0/USB 2.0** * Operation is not guaranteed with CPUs from Atom, Celeron or Pentium series or CPUs made by AMD. ** Only USB host controllers with Intel Chipsets are supported. Operation is not guaranteed when used with USB hubs or expansion cards.
MAC OS: macOS® 10.14 / 10.15 / 11 | CPU: Intel® Core i3 or faster | USB: USB 3.0/USB 2.0* * Operation is not guaranteed when used with USB hubs or expansion cards.
IPHONE/IPAD OS： iOS 9 ~ 15 * Apple Lightning-to-USB Camera Adapter required.
USB HOST
CLASS USB 2.0 High Speed
Additional Specs
SAMPLING FREQUENCY 44.1/48/96 kHz
FREQUENCY CHARACTERISTICS 44.1 kHz: −1.0 dB, 20 Hz – 20 kHz | 96 kHz: −3.0 dB, 20 Hz – 40 kHz
EQUIVALENT INPUT NOISE Actual measurements: −128dB EIN (IHF-A) at +60dB/150Ω input
DISPLAY LCD with backlight (128×64 resolution)
POWER AD-19 AC adapter (DC12V 2A)
POWER CONSUMPTION 24 W maximum
EXTERNAL DIMENSIONS 445 mm (W) × 388.4 mm (D) × 82.6 mm (H)
WEIGHT (MAIN UNIT ONLY) 3.71 kg