SX1200.1 (24V)
Mono Class D digital amplifier
With the SIGNUM SXT power amplifiers, ESX opens a new chapter in mobile amplifier technology. Designed specifically for trucks with 24V electrical systems, these German-engineered amplifiers offer outstanding sound, massive power, and maximum reliability – exactly what you need for everyday use on the road. The one-piece die-cast aluminum heat sinks ensure optimal heat dissipation and provide a sophisticated look. Combined with modern Class D technology, the ESX amps are compact, highly efficient, and incredibly powerful. Perfect for anyone who demands top-notch sound, even in a truck.
The SXT1200.1 is the top choice for uncompromising 24V bass performance in trucks. All relevant filters and crossovers are integrated, and a bass level remote is included as standard. This compact monoblock delivers a solid 900 watts RMS at 2 ohms and an even more powerful 1,200 watts RMS at 1 ohm – remarkable considering its compact design. In the Car&Hifi test (issue 1/2026) , the ESX amplifier performed even better: a remarkable 1,374 watts RMS were measured at 1 ohm. This is further proof of how conservatively ESX calculates its power ratings. For this outstanding performance, the amplifier not only received the PERFORMANCE TIP but also the highest possible rating of 1+.
Characteristics
Efficient Class D amplifier with compact dimensions
Aluminum die-cast heat sink with optimal cooling properties
RCA inputs
Compact bass level remote control
High-level inputs with Error Protection System ( EPS® )
Automatic power-on function
Start/Stop Ready
1 Ohm stable
Technical data
Mono Class D digital amplifier
1 x 600/900/1200 Watt RMS @ 4/2/1 Ω
Subsonic 10 - 50 Hz
LPF 40 - 250 Hz
Bass Boost 0 - 12 dB
Dimensions 140 x 44 x 225 mm
Efficiency up to 90%