Gallery
Description
Features
Reviews
Q&A

collapse expand iconDescription

Introducing a compact yet incredibly versatile line selector, the Black Lion Audio LS-4 opens up a world of routing possibilities for your studio setup. The LS-4 features two inputs that allow you to distribute a stereo source signal to up to four separate outputs simultaneously—or any combination thereof. Whether you need passive monitor switching, headphone distribution, parallel effects routing or a way to audition different effects chains, this road-ready unit has you covered.

Ultimate Connectivity for Passive Monitor Switching

With the LS-4, you can effortlessly switch between up to three pairs of studio monitors at the press of a button. Connect your main monitors to Output A, secondary monitors to Output B and a subwoofer to Output D for seamless toggling between configurations. This passive switcher ensures your signal path remains pristine, with zero loss in audio quality.

Streamline Headphone Distribution

Distributing your audio interface's headphone output to multiple stations is a breeze. Simply connect the interface output to the LS-4's input, then route the individual outputs to your headphone amps. With its compact footprint, the LS-4 makes an ideal headphone hub for small project studios or classroom settings.

Audition Effects in Real Time Without Patching

The LS-4 lets you effortlessly audition different effects processors on your dry signal without constant re-patching. Run your dry signal into the inputs, then connect each output to a separate effects unit. Switch between the outputs to instantly hear your tone processed through different chains—perfect for quickly comparing settings or finding the perfect combination.

Flexible Routing for Parallel Processing and More

This unit's versatile routing capabilities extend far beyond simple switching. With its two inputs and eight outputs, the LS-4 allows for parallel signal routing to multiple destinations. Connect different processors to each output, then record all four processed signals simultaneously in your DAW for creative blending. Its 100% passive design, high-quality 1/4" jacks and flexible ground lift ensure pristine signal integrity throughout.

Black Lion Audio LS-4 Line Selector
Black Lion Audio LS-4 Line Selector
Black Lion Audio LS-4 Line Selector

collapse expand iconFeatures

  • 2-in/8-out passive line selector: monitor switching
  • Audition effects chains: parallel routing capability
  • Zero tone coloring: 100% passive circuitry design
  • Roadworthy steel build: anodized aluminum faceplate

Featured Articles

collapse expand iconReviews

Be the first to review the Product

collapse expand iconQ&A

Have a question about this product? Our expert Gear Advisers have the answers.

  • submitted2 months ago

    asked byChristopher

    fromCrozet, VA

    Can I input a guitar and rout this out to 4 different amplifiers? So I dont have to keep switching the cord between amps, I can just use the channel selector to switch amps?

    Can I input a guitar and rout this out to 4 different amplifiers? So I dont have to keep switching the cord between amps, I can just use the channel selector to switch amps?

    Open Reply - Gear-Support
    Yes, you can use the Black Lion Audio LS‑4 Line Selector to route your guitar signal to four different amplifiers—but with a key caveat: it operates at line level, not instrument (guitar) level. What It Does The LS‑4 is a passive 2-in, 8-out line-level selector, capable of sending a stereo source to up to four separate destinations—perfect for routing to multiple effects chains, monitors, or headphone outputs. You can set it to output to any one or combination of the four outputs via simple button switches . Guitar vs. Line-Level Signals Guitar pickups output a high-impedance, instrument-level signal. The LS‑4 expects low-impedance, line-level signals (like from a preamp, pedal, interface, mixer) So if you plug your guitar directly into the LS‑4, you’ll likely get a weak, thin tone with low output. How to Use It Properly with Guitar Amps To make it work as intended: Insert a buffer/preamp between your guitar and the LS-4. This can be: A direct box (DI) with active buffering, A clean overdrive/boost pedal used solely as a buffer, Or the line-level output of a pedalboard/amp modeller. Connect the buffered output to one of the LS‑4’s inputs. Run outputs A–D to up to four guitar amps or amp channels. Select which amplifier gets the signal by pressing the corresponding output button on the LS‑4—no need to plug/unplug cables. Why This Works The LS‑4 is totally passive and tone-neutral, offering zero coloration to your signal. It was designed for effects auditioning, monitor switching, and routing, making it ideal for visible signal distribution task. Bottom Line Yes, you can route to four amps and toggle between them using the LS‑4’s selector switches. But, you cannot plug straight from guitar to LS‑4—you must buffer or preamp the signal first. With a proper buffer, the setup works cleanly and effectively, eliminating the need to swap cables mid-performance.