Features 3.5" TFT Color LCD display Touchscreen interface Wide range 5V to 24V power supply or powering trough USB 5 viewing modes: VU meter, 31 band real time spectrum, Oscilloscope, Envelope, Goniometer (X-Y plot), Analog VU meter, Frequency tune 2 displayed channels, each individually selectable from 2 inputs (total 4 inputs) more than 200 adjustable parameters 48 programmable presets 127 image slots for background and skins Adjustable 0dB reference in range from 2.2 mVrms to 2 Vrms Wide bandwidth input signal 8 Hz - 22 kHz USB communication with a PC USB connector, for power or modification of presets from PC Fully functional in standalone powering (USB connection is used only for modification of internally stored presets) Many viewing modes with lot of adjustable parameters: Connections: Four audio input connectors, in two pairs for Left and Right channels. Input level range from 2.2 mVrms to 2Vrms in 0.75 dB steps Power connector for wide range sypply voltage: 5 V - 24 V USB-B connector for 5V power and communication Gallery Video: According to the new Ebay rules, cannot be embedded Youtube videos anymore. You can watch them directly on Youtube: General demo of all effects Demo of analog VU-meters effects Cases Suitable for 3D print case models are available in STL file format on the sch-remote.com. Download EVOR04 Datasheet, USB drivers, VuRemote PC program, Factory configuration and images can be downloaded from sch-remote.com. Shipping: All items are shipped within 2 working days after payment. Each order has a tracking number, traceable at 17track.net or track-trace.com. The package include only the EVOR04 unit. You need a general purpose wires to provide power and audio. For presets modification by a PC is required a USB cable type A-B.