B066 Mini Stereo 8 Channel RCA Non Source Sound Passive Mixer, No Power Supply 1. Mini type stereophonic non source sound mixture is one type stereophonic 8 ways non source sound mixing box 2. Use to expand the equipment interface to realize the tone tuning, sound mixture musical instrument, CD player, tape player, computer, mobile phone and PAD, etc. 3. Needn’t additionally connect power supply, 8 sets stereophonic input with independent volume adjustment switch. Output 2 sets select shift switch. 4. Sound mixture output able to connect tone tuning table, prepose amplifier, power amplifier and source loudspeaker box, etc. 5. Simple installation: input and output, able to be used once inserted, convenient to install, input and output signal no consumption, then can enjoy different hearing experience Product Parameter: 1. Material: Metal 2. Color: Black 3. Interface: RCA interface 4. Power supply: Not need additionally connect power supply, able to be used once inserted 5. 8 sets stereophonic input with independent volume adjustment 6. 2 sets stereophonic select output with switch shift output (select 1 in 2 to output) 7. Input impedance: 10Kohms - 47Kohms 8. Output impedance: 2.5Kohms - 10Kohms 9. Output gain: -12dB (Connect power amplifier\prepose amplifier\tone tuning table\source loudspeaker after sound mixed) 10. Single product net weight: 0.42kg 11. Product size: length 172mm x width 68mm x height 38mm