A series of acoustic systems THE REFERENCE from the company Kef. REFERENCE 5 – 1397 x 349 x 470 mm REFERENCE 3 – 1202 x 349 x 470 mm REFERENCE 1 – 440 x 205 x 430 mm REFERENCE 2c – 205 x 630 x 325 mm REFERENCE 8b – 398 x 365 x 429 mm There are 5 types of finishes in the scene – piano black matte walnut polished rosewood blue on snow-white copper on black aluminum.