- Up to 85% efficiency thanks to ADC (Advanced D-Class) output stage
- USS (Universal Speakers Simulators) allows SP 4.900 to work with head units featuring the “speaker load detection” circuit
- 160 x 4 RMS (4Ω) with ultra-compact size (211.6 x 130 mm)
- IP55 aluminum chassis for maximum protection against humidity and external agents
- Water Jet Resistant