Sound Mixers.

2 CHANNEL MIXER 

2-Channel DJ mixer for the rack
VU Meter LEDs for level monitoring
2 Stereo line / phono inputs
USB port for playback and transfer of audio signal between mixer and Mac / PC
Built-in 2-band EQ for sound processing
6.3 mm microphone input
Stereo RCA connector line output

Pioneer DDJ-SR £55 per unit

Product specifications
Pioneer DDJ-SR2
compact and versatile DJ controller
USB-powered or via included adapter
can be used as standalone mixer
DVS ready
Serato Pitch ‘n Time for harmonic mixing
8x velocity-sensitive pads per deck
comprehensive loop section with adjustable loop times
extensive effects section
aluminium jog wheel
needle search strip
2-channel mixer
3-band EQ
band pass filter per channel
fader start option
connectors:
dimensions: 553 x 334 x 65 mm
weight: 3.7 kg
included: USB cable,

Pioneer DDJ-SX2 £85 per unit

Product specifications
Plug and Play: Yes
DVS upgrade ready: 
Width: 664 mm
Height: 70.4 mm
Depth: 354.4 mm
Weight: 6.1 kg
Soundcard: 24 bit/44.1 kHz
Frequency Range:
20 - 20000 Hz
Distortion:
< 0.003 % (USB), < 0.005 % (LINE)
Performance Control
Channels:
4
Deck Control: 4 / Dual
Jog Wheel:
132.5 mm durable aluminium jog wheel (center illumination)
Colour FX:
Echo, Jet, Noise, Filter
FX Parameters :
4knob x 3button
Sampler:
16slot x 4bank
Hot Cues: 8
Manual Loop:
Autoloop:
Slip Mode:
Needle Search:
Native Serato Flip:
Talkover Function:
EQ Isolator:
Fader:
Fader Start:
Crossfader Curve Adjust:
Inputs:
2 LINE (RCA), 2 PHONO/LINE (RCA), 1 MIC (XLR), 1 MIC (XLR/Jack Combo), 1 MIC (1/4 inch Jack)
USB:
2 USB B ports
Outputs:
1 MASTER (XLR), 1 MASTER (RCA), 1 BOOTH (1/4 inch Jack), 2 HEADPHONE MONITOR (1/4 inch Stereo Phone Jack, 3.5mm Stereo mini-jack)