- Guitar connection: guitar amplifier output for use with an external amp without adapters; includes built-in guitar effects. - E-guitar adapter: simple, robust design; compact and lightweight; easy to carry; functions as a guitar audio interface. - Guitar-to-smartphone adapter: portable, light and compact; easy to transport and store; practical and convenient to use; supports guitar effects with your phone. - E-guitar effect device: amp and effects are always available when you connect your guitar or bass to your phone; guitar conversion line. Use scenarios - Home practice with external amp: connect directly to an external amplifier for immediate tone and effects without extra adapters. - On-the-go recording and jamming: connect your guitar to a smartphone to access effects and record ideas quickly. - Live performance or busking: use the phone as an amp/effects rig to support guitar or bass on stage or in casual performances.