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Laptop Sound Port LSP-3


An “extension cord” for your crowded audio mixer. Attach a variety of devices through this passive direct box to dual XLR outputs, providing mono balanced, mic-level signals.

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144,00 € inc. VAT.

120,00 € ex. VAT.

LSP-3 is a passive direct box; you may think of it as an “extension cord” for your crowded audio mixer. It provides 1/8″ and 1/4″ stereo TRS jacks to accept headphone-level computer or instrument audio with loop out RCA phono; 1/4″ TRS mono jacks to accept low-level signals from instruments or media players; and an 1/8″ stereo plug to capture headphone audio from computers, cell phones or media players.

There is volume control, and a selector switch for L, R or L+R combined channels and a ground lift switch. (When lifting the ground connection, be sure that input and output devices are themselves grounded.) The LSP-3 has balanced mic-level output on duplicated XLR male jacks.

The LSP is supplied with zippered storage pouch large enough to accommodate the 6-foot pigtail cable.

Note: LSP-3 is not a mixer. Although multiple audio sources can be connected simultaneously, it is intended to handle one active source at a time.



  • Stereo 1/8 inch on 6-foot pigtail cable
  • Stereo 1/8 inch with looped output (2)
  • Stereo 1/4 inch with looped output (2)
  • Mono 1/4 inch TRS for Left and Right channel input (2)
  • RLS phono for Left and Right channels (2)


  • XLR Male (2) for mic for balanced, mono, summed stereo output


  • 13 x 6” x 3 cm
  • Weight: 0.5 Kg.
Audio Inputs 4x2
Audio Outputs 2