With input level (gain) adjustment, very easy to control most input signals and achieve better beating effects. And 5 kinds of display effects are specially designed: 1. Main beam 2. Main beam + peak point drop 3. Left and right channel beams mirroring-display 4. Left and right channel beams mirroring-display + peak point drop 5. Spring beam (Not supporting setting items) All setting items (with 16-level speed adjustments) can be set independently, and with sample effects display that can see in real time. All display items includes: 1. The descent speed of main beam 2. The descent speed of peak point 3. The stay time of peak point Parameters: Number of bit: 56 bit / per channel Optional display color: 32 bit green+16 bit orange + 8 bit red Power interface: Micro-USB Working voltage: DC 5V /100mA Power on/off function: support Power off memory function: support Input level (GAIN) adjustment: support Input voltage: 0 ~ 3Vrms Audio input: stereo L/R RCA Audio output: stereo L/R RCA Dimensions(L*W*H): 150*120*40mm / 5.91*4.72*1.57in Net weight: 225g / 0.50lb Package weight: 400g / 0.88lb Notice: 1. The spring beam effects doesn't support setting item values. 2. Because of high resolution and adopting MCU process signals, in some condition, there will be 1-3 bit error between left and right channels even input the same signal on both channels, this is normal. Packing List: 1*Finished LED Music Spectrum 1*Micro-USB Cable 1 Set*Stand 1 Set*Isolation Stand Feet 1*Manual