SP 1.900 mono amplifier features Hertz ADC (Advanced D-Class) output stage, reaching up to 87% efficiency and delivering an impressive power rating of 1000 W RMS (1 Ω), with an ultra-compact size of 211.6 x 130 x 49 / 8.3 x 5.1 x 1.9 (mm/inch). Being ultra-compact with impressive power, SP 1.900 is the ideal choice for Motorcycle applications under-seat in sports cars and behind-seat installations in trucks.