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Stage Driver, 8 Channel

The VHD SD8 is an eight-channel stage preamp designed with individual line drivers that maintain audio signal integrity over long cable lengths. As cable lengths increase, the length of the cable creates a high capacitance load that most microphones have difficulty in driving. The SD8 features eight independent mic inputs with gain control adjustment, -20 dB pad, and 48V phantom power. Each input has two outputs, allowing signal routing to two separate locations such as front of house and monitoring consoles. A five-bar LED display provides signal level information, and a rotary knob provides 0db to +30 dB of gain control.


  • 2U 19" rack eight channel stage preamp with line drivers

  • Eight individual microphone or line inputs with gain controls and pads

  • Phantom power available on each channel

  • Sixteen individual 50-ohm outputs (two per input)


Specifically designed as part of the VHD system as a multi-channel stage preamplifier Line driver to maintain signal integrity between the stage Microphone instrument inputs and mixer over long distances.

  • Live music and performance

  • Fixed installations

  • Can be used with any Audio system for improved results

System Acoustic Performance

-1dB Response: 6Hz to 500kHz

Dynamic Range: >120dB

Total Harmonic Distortion: <0.0005%

Output Channels

Max. Output Voltage: 14V / 7V (50Ω) RMS

Max. Output Current: 450mA

Signal Input

Input Channels: 8

Input Impedance: 20kΩ

Mic input: 0 to +30dB Gain, pad -20dB

Signal Output

Signal Output Channels: 8x2

Output Impedance: 50Ω


Indicators: Signal bar, Phantom

Power Requirements

Power Connector: IEC 320

Operating Voltage: 115V / 230V

Operating Voltage Range: 100 to 120V @ 60Hz | 230 to 250V @ 50Hz

Physical Dimensions

Height: 89.0 mm (3.0")

Width: 482.6 mm (19.0")

Depth: 203 mm (7.9")

Weight: 5.5 kg (12.1lbs)

Product code

  • KVV 987 093 - Stage preamp 230V

  • KVV 987 094 - Stage preamp 115V

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