CONTROL-2.6 CONTROL-1.6 VS-50 VS-40 VS-34 VS-20 VS-15
VS-2004 VS-1204 VS-1203 DC-204 DC-10 V-2 V-3.5M
V-6 V-9 V-9T
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The VS-2003 is 3CH Hi power output amplifier.
The power units are designed for install more advenced BI-amplification sound systems.
The built-in two way active crossover that allows independent amplfication of the stereo and mono subwoofer line on a signle unit.Easy to install !

  • 550W+550W(CH1&2)+1200W(CH3) full Range output 20Hz-40kHz
  • 550W+550W for satellites and 1200W for subwoofer, 0.05% THD
  • Two Way variable frequency 18dB/Octave Active Crossover on Board.
  • External Bal XLR inputs for full range 1200W output of CH3
  • Perfect controlled for no clipping output from STK CTLL circuit module.
  • Ultra Low Impedance capability.
  • High Frquency Power Supply.
  • Lowest AC Current Draw.
  • Flip-Flop Controlled Full Prodection Circuitry.
  • 1.2mm Steel Chassis Construction, 2U Space
Model VS-2003
Triple Mode (Three channel driven) Continuous Average Output Per Channel
FTC @ THD+N=0.1%, f=20Hz~20kHz Ch1 Ch2 Ch3  
8 ohm/Triple 330W 330W 750W  
4 ohm/Triple 550W 550W 1150W  
EIA @ THD+1=1%, f=1kHz        
8 ohm/Triple 350W 350W 800W  
4 ohm/Triple 570W 570W 1200W  
Power Bandwidth
(Ref. 1kHz, THD+N=0.1%,+0/-1dB)
Ch 1&2;20Hz~30kHz, Ch3:20Hz~250Hz (Through X-over)
(Ref. 1kHz,f=20Hz~20kHz)
Frequency Response
(Ref. 1kHz, 1watt output, +0/-3dB)
Ch 1&2;20Hz~40kHz, Ch3:20Hz~40kHz (EXT Input)
(60Hz:7kHz, 4:1 Half power)
4-8 ohm/Stereo ≤0.1%
(RL=8Ω, Half power, Att.Max 600Ω shunt)
≥63dB, 1 kHz
Residual Noise
(20Hz~22kHz LPF,Att.min)
S/N Ratio
(Filter:A-Weighting, RMS)
Damping Factor
(RL=8Ω, f=1kHz)
≥300 ≥300 ≥350  
Input Sensitivity (Att. max)  
4 ohm/Stereo +4.0 dBu and Ch 3 by Gain Control
8 ohm/Bridge +5.1 dBu and Ch 3 by Gain Control
Crossover Frequency 150Hz/18db Octave
Voltage Gain 34dB 34dB 37dB  
Output Circuitry AB, Ch3: H Class2-Step
Input Impedance 10kΩ(balance)
Front panel AC Switch,Ch1,2 Sub(Ch3) gain Control knobs, Freq Control(CH3)
Rear panel HPF Ch1&2, HPF Sub(Ch3), Int/EXT selet(CH3)
Clip limiter(Option)
Input XLR Female jack, XLR Male jack (Input Through)
Output Speakon jack
Indicators Power(Green),Level(Green),Protect(Red)
Bar Graph In/Out level
Protection Circuits 1)Short Circuits
2)Current Limit
3)DC detection
5)Turn On/Off muting
6)Power supply shutdown
7)AC Line fuse
Fan Circuit Three Fans Variable Low Speed(50℃),
High speed(60℃)
Power Consumption
(1/3 power)
DIMENSION 480mm X 88mm X 495mm
Weight 12.4kg / 27.33 Ibs
*Specifications Subject to change without notice.
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