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Based on KME's proven 'thoroughgoing digital amplifier technology' the first release for a new series of rackmount amplifiers is presented with the DA428, a 4-channel unit with 700W each. This compact, light-weight 19"-2U device is equipped with comprehensive DSP features like matrix router, 6 fully parametric equalizers two crossover networks, delay and dynamic processor per channel in the first instance.

All parameters as well as user navigation can be managed using a simple 5-key navigation pad together with 4 rotary encoders. The sophisticated user interface is completed by a graphic LCD display and 4 RGB LEDs informing about relevant operation parameters and state of the single channels.

Factory and user presets may of cause be stored inside the unit, an SD-card reader is implemented and can be used to easily transfer preset and system information to other units. An preset editor software and various firmware add-ons are planned as well.

On the inputs side are 4 analogue connections as well as 2 digital ports accepting AES/EBU and SPDIF formats of 16 to 24 bit and 32 to 192 kHz sampling frequency. 4 link sockets, either carrying the signal applied to the inputs can be routed as processed digital outputs carrying AES/EBU of 24 bit/48 kHz.

The designers also implemented a module slot for future updates, i.e. connections to audio/control networks, standard- fitted with module RSNC equipped with a RS232 connector and a 'normally closed' contact feature. Global remote control is guaranteed using future firmware upgrade modules, but even the standard version contains simple remote features.

Another important feature is the PFC controlled, audio-optimized wide-range switched- mode power supply of the last generation. The outside power connection was realised using a self-locking Neutrik PowerCon connector, 4 Neutrik Speakon sockets (two are wired 'bi-amp') ensure the connection to the speaker systems.

An extensive set of protective circuits and digital monitoring components is included 'rounding off' the professional features of this equipment usable for stage monitor operation to system operation of passive PA components or realization of professional multi-channel systems within sound installations.

The DA428 is developed and made in Germany and gives the user a perfect price-performance ratio.

K.M.E. exhibits in hall 8.0 stand C12 and live on stage the PANO Line-Array at Concert Sound Arena at the open air area with daily presentations at 12 p.m., 2.40 and 5.20 p.m.

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