Description
Keyboard Mixer, USB Interface and Performance Pedal
The Key-Largo is a unique and powerful device that combines a multi-channel keyboard mixer with a USB audio interface, while providing the ability to control elements of the performance with footswitch control.
 | Features
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A mixer for today's gigging keyboard playerDesigned for stage use, the Key-Largo allows you to connect up to three stereo keyboards, effects and volume pedals, and a laptop computer via USB, managing all these signals to send a balanced audio feed to a PA system for a seamless performance on stage. Three stereo analog inputs feature individual volume controls to balance levels, and each can be sent to a shared effects loop to add reverb or delay in an instant using a dedicated footswitch. A USB connection allows laptop computers to be integrated into the setup for control of soft-synths, and a built-in sustain footswitch and connections for a stereo volume pedal provide additional ways to control your performance. |  |
 | High headroom, low noiseA switch-mode power supply inside the Key-Largo elevates the rail voltage to 24 volts for extra headroom to handle the most dynamic digital keyboards and the hottest analog synths without fear of overload or distortion. This is paired with 24bit/192kHz digital audio converters for high quality audio over USB when playing soft-synths or pre-recorded tracks. To eliminate noise when connecting multiple devices on stage, the main outputs are transformer-isolated to eliminate hum and buzz from ground loops, and all outputs are equipped with ground lift switches to further reduce noise. |
Key-Largo Applications
 Manage a multi-keyboard setup with easeThe Key-Largo effortlessly mixes multiple keyboard outputs down to a stereo feed for the PA system over XLRs. Add more excitement to the performance with a switchable effects loop and master volume pedal. |  Integrate a soft-synth on stageThe Key-Largo can take the MIDI output from a controller to play a soft-synth on your laptop. High quality digital-to-analog converters give you great sound quality on local monitors and at the PA system. |  Combine analog and digital on stageMix three keyboards together with the output of a laptop soft-synth, making the Key-Largo the center of your performance setup. Connect a ¼” cable to the footswitch input on your main keyboard to utilize the Key-Largo as a sustain pedal, fully implementing the many features of this powerful pedal. |
Specifications
Even though the Key-Largo is built into a compact space-saving chassis, it is still a powerful line mixer with tons of headroom. A switch-mode power supply internally elevates the rail voltage to 24 volts which allows it to handle the hottest keyboard and synth outputs without choking. Custom isolation transformers on the XLR outputs prevent buzz and hum when connecting to a pair of powered speakers or the PA system, with additional ground lifts for further noise abatement. A USB connection includes 24bit / 192kHz converters for high quality playback or recording with a laptop; perfect for use with soft-synths on stage or recording an idea when inspiration strikes.
Specifications
- Audio circuit type: Active circuit with audio-grade operational amplifiers
- Number of channels: 3x stereo analog inputs, 1x stereo USB input, 2x stereo analog outputs
- Frequency response: 20Hz - 20kHz ±0.5dB
- Gain: +12dBu
- Clip Level: +12dBu
- Total harmonic distortion: <0.005% @ 1kHz
- Input Impedance: Analog 20k Ohms
- Output Impedance: XLR: 300 Ohms 1/4": 450 Ohms
- Noise: -91dBu
- Noise: 24bit / 192kHz
Features
- 180° polarity reverse, Ground lift, Level Control, Effects Loop
- Input Connectors: 3x Stereo Analog Inputs, 1 x Stereo USB Input
- Output Connectors: Stereo XLR Balanced Outputs, Stereo 1/4" Monitor Outputs
- Extras: Performance or Recording Mode
General
- Construction: 14-gauge steel
- Size (L x W x D): 8.4" x 5" x 1.9" (21.3cm x 12.7cm x 4.8cm)
- Weight: 3.25lb (1.47kg)
- Shipping size (L x W x D): 13.3" x 5.1" x 3" (33.7cm x 13cm x 7.6cm)
- Shipping weight: 4.3lb (1.95kg)
- Conditions: For use in dry locations only between 5°C and 40°C
- Warranty: Radial 3-year, transferable
Block Diagram
Graphs
Frequency Response |
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 Fast Fourier Transform |
 IMD vs Output |
 Noise Spectrum |
 Phase Shift |
 Distortion vs Frequency |
 THD vs Output |
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