Laptop Sound Port (Multi Input Direct Box)


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.

SKU: LSP-3 Category:

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.


• Input Jacks
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)

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

• 5” x 2¼” x 1¼”
• Weight: 1.1 lb.

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