Build in German DSP technology

The SDX Series is the logical evolution of the successful SX Series in 1U Class D technology. The integration of the DSB board, developed and produced in Germany, has made it possible to achieve impressive performance data. Like the DSM-428 and 428-FIR DSP processors, the SDX power amplifiers are managed and programmed via the DSM Network Client. The SDX power amplifiers can be controlled individually or in groups via the DSM software. Output power has also been significantly increased. The SDX-427 now delivers 4x3500 watts into 8 ohms and the SDX-418 4x2000 watts into 8 ohms. The integrated AVB/MILAN interface is currently undergoing certification. The built-in interface allows the SDX Series to be integrated as a listener in AVB/MILAN networks. Audio streams can then be routed to the SDX power amplifier via the AVB network management. In an AVB / MILAN network, audio streams are transmitted with virtually no latency, even over long distances.

SDX-418 GS1 (EAN) CODE: 4260318513272
SDX-427 GS1 (EAN) CODE: 4260318513289

Technical Details

Model Name	SX-418	SX-427
GS1 (EAN) CODE	4260318513272	4260318513289
System Type	4-Channel Class D Amplifier	4-Channel Class D Amplifier
Output Power all channels driven 20Hz - 20 kHz, 0.1 % THD	4 x 4950W @ 2Ohm 4 x 3250W @ 4Ohm 4 x 2000W @ 8Ohm	4 x 8600W @ 2Ohm 4 x 5670W @ 4Ohm 4 x 3500W @ 8Ohm
Output Power Bridge mode	2 x 8400W @ 4Ohm 2 x 6600W @ 8Ohm 2 x 4000W @16Ohm	2 x 14700W @ 4Ohm 2 x 11550W @ 8Ohm 2 x 7000W @16Ohm
THD+N @ 8Ω 1kHz,1dB	≤0.05%	≤0.05%
Slew Rate	>30v/μs	>30v/μs
Frequency Response @1Watt, 8Ohm	10Hz - 20kHz ±0.35dB	10Hz - 20kHz ±0.35dB
Damping Factor (@20Hz-100Hz)	>3000	>3000
Signal to Noise Ratio 20Hz -20 kHz	>99dB	>99dB
Channel Separation Crosstalk@1kHz	>70dB	>70dB
Voltage Gain	45dB (0,775V:127V)	48,5dB (0,775V:168V)
Input Sensitivity	1,54 Vrms 6dBu max. 20 dBu	1,54 Vrms 6dBu max. 20 dBu
Input Impedance	20k Ohm Balanced 10k Ohm Unbalanced	20k Ohm Balanced 10k Ohm Unbalanced
Front Control	Power switch	Power switch
Rear Control	Sensitivity Switch, Mode Switch	Sensitivity Switch, Mode Switch
LED Indicators	Multifunction LED Rings Protect, Bridge, Network, DSM	Multifunction LED Rings Protect, Bridge, Network, DSM
Input Connectors	XLR Active balanced pin1 gnd pin 2+ pin3-	XLR Active balanced pin1 gnd pin 2+ pin3-
Output Connectors	4 Neutrik NL4 Sockets	4 Neutrik NL4 Sockets
Inputs	4 analoge inputs 8 channel AVB / MILAN Listener (Certicatien on progress)	4 analoge inputs 8 channel AVB / MILAN Listener (Certicatien on progress)
Input/Output DSP Crossover Functions low and high-pass filter	Butterworth 6, 12, 18, 24dB/oct Bessel 6, 12, 18, 24dB/oct Linkwitz-Riley 6, 12, 18, 24dB, 48dB/oct	Butterworth 6, 12, 18, 24dB/oct Bessel 6, 12, 18, 24dB/oct Linkwitz-Riley 6, 12, 18, 24dB, 48dB/oct
Input/Output DSP EQ Functions	10 parametric EQs with variable frequency, gain, and bandwidth switchable to Notch, Allpass, Low Shelf, High Shelf, Bandpass, High Pass, Low pass	10 parametric EQs with variable frequency, gain, and bandwidth switchable to Notch, Allpass, Low Shelf, High Shelf, Bandpass, High Pass, Low pass
Input/Output DSP Delay Time	Input up to 40ms Output up to 10ms	Input up to 40ms Output up to 10ms
Input/Output DSP Limiter	Threshold, Attack up to 100ms Release from 10 to 100ms	Threshold, Attack up to 100ms Release from 10 to 100ms
Input/Output DSP Compressor	Full 4-band compressor with band filter, frequency, Q, Threshold, Attack, Release, Ratio	Full 4-band compressor with band filter, frequency, Q, Threshold, Attack, Release, Ratio
Output DSP Functions	Input gain fader matrix, Phase switch, FIR Filter with TAP configuration	Input gain fader matrix, Phase switch, FIR Filter with TAP configuration
DSP Functions	100 storeable device presets, Filepresets storeable on your Comuter	100 storeable device presets, Filepresets storeable on your Comuter
Cooling	Low noise fan	Low noise fan
Protection	Full short circuit, Open circuit, thermal, Ultrasonic, RF Protection	Full short circuit, Open circuit, thermal, Ultrasonic, RF Protection
Load Protection	On/Off muting DC fault power Supply shutdown	On/Off muting DC fault power Supply shutdown
Operating Voltage	PFC 100V-240V 50-60Hz	PFC 100V-240V 50-60Hz
Idle Power Consumption	< 155W	< 200W
Max. Power Consumption	< 8500W	< 12000W
Fuse	2xT-20A	2xT-30A
Dimensions	19“/1U 483W x 486D x 44H	19“/1U 483W x 486D x 44H
Net weight	11,5 kg	11,5 kg