The KL-8 is a digital interface, with MIDI and USB connections
Radial Engineering has developed its KL-8 keyboard mixing station with pro keyboard players in mind. Up to four keyboards can be connected in mono or stereo, each with their own level controls and LED indicators, along with the ability to bring them in and out of the signal path to keep noisy keyboards muted until they are needed. A stereo aux send/receive channel is available to feed rackmount reverbs and delays or effects pedals. It can also
be used as an additional input for a fifth keyboard or reconfigured to allow an alternative audio source such as a click track to feed the headphones and stage monitors.
Both the main outputs and monitor outputs are provided over transformer-isolated balanced XLRs, with ground lift switches to eliminate hum and buzz from ground loops. The main outputs are also transformer-isolated to further reduce noise. Both sets of outputs can also be summed to mono for use with systems that have limited channel availability. Dual ¼-inch headphone outputs are also included for local monitoring and testing. A cue system allows any keyboard input to be muted from the overall mix and fed directly to the headphones to silently check patch settings without feeding signal to the audience.
The KL-8 is also a digital interface, with MIDI and USB connections. Redundant USB connections mean that users can have a backup laptop plugged in and ready to go should your primary source fail; this is especially helpful for keyboard players who are also controlling playback for backing tracks during the performance. An optional JR1-L
remote footswitch can be employed to switch between the USB inputs. Stereo insert points allow a single volume pedal to control all keyboard outputs, and a link feature can be used to connect multiple units together and expand the KL-8 inputs.