Yamaha TRBX304BL 4 String Bass in Black Upright Bass 3-Way-System with 2×7”+4” Woofer and

3-Way-System with 2×7”+4” Woofer and High-Resolution HEDD AMT Tweeter

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

The unique Multi Performance technology allowing to easily switch between strumming

The Kemper Profiling Amplifier is an entirely new and groundbreaking concept for guitar amplification using digital technology

Yamaha TRBX304BL 4 String Bass in Black Upright Bass 3-Way-System with 2×7”+4” Woofer andThe 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