British audio mixer
Vi-12 features:
◆ 12 input channels, 6 microphone inputs and 4 groups of stereo line inputs
◆ channels 1-4 have compression function, channels 1-6 are equipped with three-stage middle frequency sweep equalization, channels 5 / 6 and 7 / 8 are equipped with three-stage equalizers, and channels 9 / 10 and 11 / 12 are equipped with two-stage equalizers
◆ 4 groups of buses (stereo + 2 groups)
◆ 2 auxiliary transmission / stereo auxiliary return
◆ 3-segment channel equalization (if band sweep) and high pass filter
◆ 3-segment stereo graphic equalizer
◆ high precision three-color level column to accurately display the output level
◆ 2tk recording input and output are connected
◆ the built-in digital effector with 16 modes is durable and lightweight, and can be installed with a 19 inch standard rack
◆ 60mm stroke high analysis pusher
◆ external squelch power supply, easy and flexible to use
Features:
◆ 12 input channel, 4 mono ch+4 stereo ch
◆ 6 high performance microphone amplifiers with phantom power
◆ 1-4 channel with internal channel compressor
◆ All mic input are equipped with 3-band channel EQ AND HPF
◆ 2 CH AUX SEND/stereo aux return
◆ 4 bus(stereo, group)
◆ Internal SPX effect  processor
◆ Smooth 60-millimeter faders& illuminated channel ON/OFF button
◆ Lightweight and durable designs
Technical parameter specification:
Total harmonic distortion: less than 0.1% (THD + n)
Frequency response: 20Hz-20KHz + 1dB / - 3dB
Equivalent input noise: rs = 150 Ω gain:
Max value: - 128 DBU
Residual output noise: - 99 DBU
Channel in mute state: - 70dB
Headphone output power: 75MW (1kHz, thd = 0.5%, 100 Ω)
Crosstalk: - 70dB mono / stereo high pass filter: 80Hz - 120Hz 12dB / OCT
Single sound equalizer: high: 10kHz ± 15dB, medium: 250hz-5khz ± 15dB, low: 100Hz ± 15dB
Stereo equalizer: high: 10kHz ± 15dB, medium high: 3kHz ± 15dB, medium low: 800Hz ± 15dB, low: 100Hz ± 15dB
Input and output impedance: microphone input: 3K Ω applicable impedance 50-600 Ω microphone
Single sound input: 10K Ω, applicable to 600 Ω line
Stereo input: 10K Ω, suitable for microphone and line with impedance of 50-600 Ω
Recording input impedance: 10K Ω, applicable to 600 Ω line
Main output impedance: 150 Ω
Marshalling output impedance: 150 Ω aux
Output impedance: 150 Ω
Recording output impedance: 600 Ω
Power consumption: 35W