Twenty offers four sound integration options. The SCA3, the BRA2 and the VRA2 high-end system are three tried and trusted Spectral sound systems that are available. All systems are integrated into the furniture and are concealed behind a fabric-covered front. The XTA1 in slim design at just 7 cm was designed especially for Twenty and is concealed in a slim music board measuring a mere 10 cm. Alternatively available are elements for sound bars by different manufacturers.