Yamaha TRBX304BL 4 String Bass in Black Upright Bass Komplete Kontrol S88 combines the

Komplete Kontrol S88 combines the best-feeling hammer-action keybed around with vivid visual feedback and tight integration for your entire workflow: Browse and preview all your presets from Komplete and hundreds of NKS plug-ins

Basically they are just short lengths of Bamboo with the inner knots hollowed out (except for the bottom one)

For low-latency foldback or monitoring to headphones or main outputs

Full project exchange with other leading audio and video editing systems

Yamaha TRBX304BL 4 String Bass in Black Upright Bass Komplete Kontrol S88 combines theThe Yamaha TRBX304BL 4 string bass is a perfectly balanced bass made of all solid mahogany with a 5pc maple mahogany laminated, bolt on neck that provides excellent tone and awesome sustainability. Comes stocked with M3 pickups that have oversize pole pieces and ceramic magnets for clear tone and unparalleled definition. Also has Yamaha's exclusive active circuit Performance EQ with 5 performance tuned, full spectrum EQ curves and a 2 Band master EQ