JUST MIXER Audio Mixer - Battery/USB-powered portable pocket audio mixer with 3 stereo channels (3.5mm) featuring an on/off switch (Blue)

["Versatile and compact: The perfect way to mix multiple audio sources, wherever you are (great for mixing audio/music from computers, smartphones, tablets, gaming consoles, Amazon Echo/Dot, microphones, and instruments)", "Stereo configuration with 3 inputs and 1 output - 3 stereo channels (3.5mm/1/8 inch) allow up to 5 mono input connections", "Signal level: Gain control allows input from various devices, from microphone level to line level (highly sensitive microphone recommended when using microphones)", "Overload indicators: LEDs light up when the signal level exceeds the capacity of the mixer; monitoring for optimal sound performance", "Power supply via battery or USB - Use USB power for a long-term solution or 2 AAA batteries for travel (USB charger/cable not included; battery-powered requires high-quality batteries, such as Energizer Ultimate Lithium Battery life is approximately 8 hours.)"]