From Boss:

Crafted with the breakthrough design philosophy behind the acclaimed Katana guitar amp series, the Katana-210 Bass delivers premium sound and advanced features perfectly tuned for the needs of serious bassists. Three unique amp characters and onboard BOSS effects provide a wide range of tones, delivered with 300 watts of assertive class AB stage power and a high-performance speaker system based around two 10-inch woofers. And with comprehensive EQ, flexible connectivity, and more, the Katana-210 Bass is ready to take on any playing situation, from stage to studio to everyday practice at home.

• Versatile combo bass amp with stage-ready sound and advanced features
• 300-watt class AB power amp delivers big, punchy tone
• Rock-solid combo cabinet with two custom 10-inch woofers and high-frequency tweeter with on/off switch
• Three selectable amp voicings cover a wide range of styles
• Shape switch with three tone characters: mid scoop, bright, and extended range
• Four independent effect sections: compressor, drive, and FX1/FX2 with a vast range of selectable effects
• Comprehensive four-band EQ with selectable low and high-mid frequency controls
• Studio-inspired Blend section enables you to mix in the dry sound for enhanced fatness and clarity
• Six memories for storing and recalling favorite sound setups
• Power Control realizes cranked-amp volume in any playing situation
• Adjust preamp and effect settings, organize sounds, and more with the dedicated BOSS Tone Studio editor for macOS and Windows
• Download and share Livesets at 
• USB and phones/recording outputs with mic'd cabinet emulation
• Balanced XLR direct output with selectable direct, pre, or post signal
• External speaker jack
• Optional GA-FC footswitch for deep performance control
• Edit sounds from a smartphone with the optional BOSS Bluetooth® Audio MIDI Dual Adaptor