no 16 bits sound (his sound righy channel)

I bought the (Audiophonics I-Sabel DAC ES9018K2M framboos Pi 3 / P 2 A + B + / I2S) and i am using the latest release Volumio. But when i play 16 Bit files, then i have no sound (only rigy channel his sound)

Please can sombody help me?