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Mixers

Sum microphone, instrument, or line level signals down to a stereo or mono output, while balancing between the relative input levels.

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Radial KL-8
R800 1428 00

Ultimate Keyboard Control

The KL-8 is a powerful mixing station created with keyboard pros in mind, with a number of features designed specifically to streamline and enhance any keyboard setup. You can connect up to four keyboards in mono or stereo, with level controls, aux sends, and LED indicators for each. A stereo aux send/receive is available to feed rackmount reverbs and delays and effects pedals, or it can be used as an additional input for a fifth keyboard. MIDI and USB connections make it easy to control a laptop soft-synth, utilizing high quality 24bit/192kHz digital audio converters. The KL-8 also features multiple output options, with transformer-isolated XLR main outputs to feed the PA, monitor outputs for a set of speakers on stage, and dual headphone outputs for local monitoring and testing.

Specifications

Frequency response 20Hz - 20kHz (±0.5dB)
Dynamic range 90dB referred to +28 dBu, 102 dBA (main & monitor outputs)
Total harmonic dirstortion 0.01% @ 100Hz - 20kHz / 0dBu (-80dB) (main & monitor outputs)
Input impedance:  
- Analog inputs (1-4) 14.3-20k Ohms (min/max)
- Auxillary inputs 33k Ohms
Output impedance:  
- Auxillary outputs 2.2k Ohms
- Main & monitor outputs 1.1k Ohms
- Headphone outputs 51 Ohms
Maximum input:  
- Analog inputs (1-4) +18dBu (+16dBV)
- Auxillary inputs +16dBu
Maximum output:  
- Auxillary outputs +18dBu
- Main & monitor outputs +28dBu
- Headphone outputs 0.4 W into 15 Ω (8.3 VRMS max)
Power 100V to 240V, locking 4-pin XLR

(For full specifications see manufacturers product site under "links" tab)

 

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Radial Space Heater
R800 7050 00

8-Channel Summing Mixer & Tube Drive

The Space Heater is a high performance summing mixer that allows you to blend tracks out-of-the-box in the analog domain, with oversized output transformers and vacuum tubes for vintage warmth and character. Eight mono input channels or four stereo pairs are available, with a heat switch on each pair to adjust the voltage on the 12AX7 tube - lower voltage settings starve the tube for a more pronounced distortion effect. Separate Drive and Level controls on each channel give you complete control over each tube circuit, providing a range of tones that allow you to fatten up digital stems or provide a distorted effect on vocals, guitars or drums.

Specifications

Audio circuit type Class-A tube gain stage with IC buffers
Number of channels 8 channels
Frequency response 20Hz - 20kHz (0dB/-3dB)
Dynamic range 96dB
Gain +33dB @ 140V; +29db @ 70V; +27dB @ 35V
Clip level +26dBu
Input impedance Bypassed: 50k Ohms in parallel with your load device; Active: 100k Ohms
Output impedance:  
- Balanced output 180 Ohms
- Mix bus 100 Ohms
Common mode rejection ratio -70dBu @ 55Hz
Equivalent input noise 103dBu
Noise @ Max Gain: -64dBu @ 140V, -66dBu @ 70V, -70dBu @ 35V
Maximum input +22dBu
Power External switching type 100V – 240V AC, 1600mA output with 5 pin XLR

(For full specifications see manufacturers product site under "links" tab)

 

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Presenter
R800 8011 00

Presentation Mixer & USB Interface

The Presenter replaces typical audio mixers that include numerous complicated controls and knobs that rarely get used, instead opting for a simplified and intuitive layout that allows anyone to operate it and achieve high quality sound with minimal effort. An XLR mic input allows you to connect a podium microphone and provide it with phantom power. The mic signal can then be adjusted using three powerful EQ controls to tailor the frequency response. A Program input level controls the volume of the USB input or the 3.5mm jack on the front of the unit, which allows you to connect the outputs of your laptop, smartphone, or MP3 player and blend it with the signal from the microphone. XLR outputs provide balanced feeds for a set of powered speakers, making it an all-in-one portable solution for any speaking engagement.

Specifications

Audio circuit type Active Preamplifier Circuit with digital to analog input conversion
Number of channels Two channels
Frequency response 20Hz - 20kHz (-0.4dB/0dB)
Dynamic range +91dBu
Gain +52dBu
Total harmonic dirstortion 0.004% @ 20Hz; 0.004% @ 1kHz; 0.004% @ 10kHz
Intermodulation dirstortion 0.003% @ 0dBu; 0.01% @ -10dBu; 0.03% @ -20dBu
Phase deviation -28° @ 20Hz; -1° @ 1kHz; +2° @ 20kHz
Input impedance 10k Ohms
Output impedance 2.74k Ohms
Noise -84dBu
Maximum input +7dBu
Power 5V USB

(For full specifications see manufacturers product site under "links" tab)

 

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Mix 2:1
R800 1036 00

Two-channel Audio Combiner & Mixer

The MIX 2:1 makes it easy to sum together any two signals, whether it's two microphones on a single guitar amplifier, or the stereo line outputs of a mixing console. At the inputs of the MIX 2:1, both ¼" TRS and XLR connectors are available, with ground lift switches to eliminate buzz and hum from ground loops and ensure noise-free operation. A trim control is also featured on each input, so if you are connecting two separate mono sources such as the outputs of two mic preamps, they can each be attenuated as needed to match their levels at the output. After both signals are passively summed together, they feed a single XLR output that can be connected to a powered speaker, or the input of a console or recording interface.

Specifications

Audio circuit type Passive mixer
Frequency response 20Hz - 20kHz
Dynamic range >133dB
Total harmonic dirstortion >0.005% @ 0dBu
Intermodulation dirstortion >0.002% @ 0dBu
Phase deviation 0° @ 20Hz; 0° @ 1kHz; +2° @ 10kHz
Input impedance 8k Ohms
Output impedance 1k Ohms
Common mode rejection ratio >80dB
Noise -113dBu
Maximum input >+20dBu
Power Passive, no power required

(For full specifications see manufacturers product site under "links" tab)

 

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Key-Largo
R800 1427 00

Keyboard Mixer, USB Interface and Performance Pedal

Designed 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.

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 dirstortion <0.005% @ 1kHz
Input impedance 20k Ohms (analog)
Output impedance 300 Ohms (XLR); 450 Ohms (1/4")
Noise -91dBu

(For full specifications see manufacturers product site under "links" tab)

 

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