1:2 Composite Video & Stereo Audio Distribution Amplifier with a Twisted Pair Output


The VM-9T is a high-quality distribution amplifier for composite video and unbalanced stereo audio signals. It inputs one signal, provides correct buffering and isolation and distributes the signal to two identical outputs and one twisted pair output on an RJ-45 connector.

Features & Benefits

  • High Bandwidth - 350MHz (-3dB).
  • Looping Input.
  • Selectable Input Signal Termination.
  • Level (Gain) & EQ (Peaking) Controls - Recessed trimmers to prevent tampering.
  • Audio Level Control.
  • System Range (Twisted Pair) - More than 500m (1500ft). Greater distances possible depending on signal resolution and cable.
  • Cable (Twisted Pair) - UTP (unshielded twisted pair) or STP (shielded twisted pair) such as CAT 5.
  • Worldwide Power Supply - 100-240V AC.

Product Use Diagram

Product Specifications

Inputs1 composite video with loop, 1Vpp/75Ω on a BNC connector; 1 unbalanced stereo audio with loop, +4dBu on RCA connectors
Outputs2 composite video, 1Vpp/75Ω on BNC connectors; 2 unbalanced stereo audio, +4dBu on RCA connectors; 1 twisted pair on an RJ-45 connector
Max Output LevelVideo: 2.4Vpp; Audio: +21dBu
BandwidthVideo: 350MHz; Audio: 43kHz
Diff. Gain0.04%
Diff. Phase0.06Deg
S/N Ratio76dB
ControlsVideo: Level: -0.4dB to +6dB; EQ.: 0dB to +10dB @50MHz; Audio: Level: -12dB to +12dB
CouplingVideo: DC; Audio: AC
Audio THD + Noise0.02%
Audio 2nd Harmonic0.005%
Power Consumption100-240V AC; 50/60Hz 12VA
Operating Temperature0° to 40°C (32° to 104°F)
Storage Temperature-40° to +70°C (-40° to 158°F)
Product Dimensions W, D, H8.45" x 6.42" x 1.72" (21.46cm x 16.30cm x 4.36cm)
Product Weight2.0 lbs (0.9kg)