Package includes following products: – Ground Zero GZRB 16SPL – Ground Zero GZHA mini ONE Technical specs: – 6.5″ Subwoofer – Bass reflex enclosure – Small size enclosure – High efficient class D mini amplifier – Extreme compact size – Output power 4/2/1 Ohm 220 / 390 / 630 WRMS – Enclosure size: 410 x 280 x 130 mm see further technical specs from pages of individual products.