This is a new, unused item. It has been opened to check for power and sound. No problems found, and the sound quality was excellent. Other features are also enjoyable. Highly recommended. - A smart amp & amplifier for practicing. Using the award-winning BIAS tone engine, you can practice while playing along with millions of songs and access over 10,000 guitar tones. You can use various features to "enjoy practicing guitar," such as the chord analysis function for songs on YouTube and AI-generated rhythms and jam sessions that match your guitar playing. - An amp that "jams" with you. - Automatically displays the chords of millions of songs. - Control without taking your hands off the guitar - Ultra-realistic amp modeling and effects - A huge and growing tone library - Deep and powerful, immersive speaker design - Spark also functions as a USB audio interface. - A full-range amp designed for all players, from beginners to experts. Detailed Information [Audio Specifications] Frequency Range: 20-20,000 Hz Stereo/Mono: Stereo Maximum Sound Pressure Level: 116 dB SPL @1m Cabinet Construction: Bass Reflex Type Power Amplifier: 40 Watt Class D Amplifier Speakers: Two - 4" Custom Designed Speakers Total Impedance: 4 ohms [Power Supply] Main Input Voltage: 100 - 240 V Main Frequency: 50/60 Hz [Controls and Input/Output] ● Top Panel Controls Amp Type: Gain, Bass, Middle, Treble, Modulation, Delay, Reverb Output Volume Music Volume Four programmable preset buttons Tap/Tuner button ● Built-in Effects 30 Amp Models 40 Effects (Noise Gate, Compressor, Distortion, Modulation, Delay, Reverb) ● Wired Input/Output 1/4" Guitar Input 1/8" Aux Input 1/8" Headphones ● Wireless Input/Output Bluetooth Audio ● USB Audio USB Interface for Recording