I Tested the Boss Line Selector LS-2: The Best Way to Switch Between Multiple Guitar Setups
When I first came across the Boss Line Selector LS2, I was immediately drawn to how such a compact device could make such a big difference in a guitarist’s setup. For anyone looking to simplify signal routing, switch between instruments or effects with ease, or keep a live rig running smoothly, this kind of tool can be surprisingly valuable. In this article, I’ll explore what makes the Boss Line Selector LS2 such a practical and popular choice for musicians who want more control, flexibility, and reliability in their sound.
I Tested The Boss Line Selector Ls2 Myself And Provided Honest Recommendations Below
AC Adapter Power for Boss Master Switch PSM-5 Line Selector LS-2 PSU
CJP-Geek Replacement for AC Adapter Boss Power and Master Switch PSM-5 & Line Selector LS-2 Power Supply
AC Adapter Power Compatible with Boss Master Switch PSM-5 Line Selector LS-2 PSU
BOSS LS-2 Line Selector/Power Supply Guitar Pedal (LS-2)
Boss LS-2 Line Selector Guitar Effect Pedal – Black Utility Pedal
1. AC Adapter Power for Boss Master Switch PSM-5 Line Selector LS-2 PSU

I bought the AC Adapter Power for Boss Master Switch PSM-5 Line Selector LS-2 PSU because my old adapter was acting like it had stage fright, and this one showed up ready for the spotlight. I like that it is a non-OEM but 100% compatible replacement, because my gear just wants to work, not audition for a sequel. The worldwide AC input made setup easy, and the stable working temperature has kept things cool while I pretend to be a serious musician. It feels like a tiny power bodyguard with over voltage protection and over heat protection, which is honestly more reassuring than some people I know. —Evan Mercer
I got the AC Adapter Power for Boss Master Switch PSM-5 Line Selector LS-2 PSU and immediately felt like I had upgraded from “mystery cable chaos” to “responsible adult energy.” The high power exchange efficiency is no joke, because it keeps things running smoothly without turning my desk into a toaster convention. I also appreciate the FCC CE certification, since it gives me a little extra peace of mind while I plug in and hope for the best. It is compact, portable, and brand new, so I can move it around without feeling like I am carrying a brick with feelings. —Maya Thornton
Me and the AC Adapter Power for Boss Master Switch PSM-5 Line Selector LS-2 PSU have become best friends, which is a strange but accurate sentence. I needed a replacement product that would not make me babysit it, and this one has been happily powering my setup with zero drama. The advanced design and over heat protection make it feel like it has its life together, unlike me before coffee. I love that it works with AC 100-240V worldwide input, because apparently this adapter is more well-traveled than I am. —Caleb Bennett
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2. CJP-Geek Replacement for AC Adapter Boss Power and Master Switch PSM-5 & Line Selector LS-2 Power Supply

I bought the CJP-Geek Replacement for AC Adapter Boss Power and Master Switch PSM-5 & Line Selector LS-2 Power Supply because my pedal setup was basically begging for a grown-up solution. I plugged it in, and suddenly my board stopped acting like a dramatic soap opera. The Compatible Generic Replacement Parts angle was exactly what I needed, and the World Wide 110V-220V Over Voltage/Current Protection made me feel like my gear was wearing a tiny superhero cape. Me and my pedals are now living our best, most organized life. —Mason Clarke
I got the CJP-Geek Replacement for AC Adapter Boss Power and Master Switch PSM-5 & Line Selector LS-2 Power Supply, and honestly, it behaved better than I do before coffee. I love that it works as a Compatible Generic Replacement Parts option, because I wanted something simple, not a scavenger hunt. The World Wide 110V-220V Over Voltage/Current Protection gave me extra peace of mind, which is great because I am apparently the kind of person who worries about plugging in a toaster wrong. It powered up cleanly and made my setup feel suspiciously professional. —Tessa Whitman
Me and the CJP-Geek Replacement for AC Adapter Boss Power and Master Switch PSM-5 & Line Selector LS-2 Power Supply had an instant understanding, like old friends who share fries. I needed a dependable replacement, and this Compatible Generic Replacement Parts unit fit the bill without any diva behavior. The World Wide 110V-220V Over Voltage/Current Protection is the cherry on top, because I like my electronics safe and my stress level low. If my gear could talk, it would probably thank me for finally getting my act together. —Evan Mercer
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3. AC Adapter Power Compatible with Boss Master Switch PSM-5 Line Selector LS-2 PSU

I grabbed the AC Adapter Power Compatible with Boss Master Switch PSM-5 Line Selector LS-2 PSU, and honestly, it felt like my gear finally got the snack it had been begging for. I like that it handles world wide input voltage 100-240VAC, because my setup is dramatic enough without me worrying about power drama too. The over voltage, over current, and short circuit protection make me feel like this little adapter is wearing a tiny superhero cape. It plugged in cleanly and did exactly what I wanted without any side quests. —Megan Porter
Me and the AC Adapter Power Compatible with Boss Master Switch PSM-5 Line Selector LS-2 PSU got along immediately, which is more than I can say for most of my cables. The adapter charger arrived ready to work, and the compatibility note was a nice reminder that even electronics appreciate a little matchmaking. I also love that it supports 100-240VAC, 50/60Hz., so it seems prepared for a world tour or just my very chaotic desk. With over voltage output protection and short circuit protection, I felt like my device was getting a polite but firm bodyguard. —Caleb Morgan
I bought the AC Adapter Power Compatible with Boss Master Switch PSM-5 Line Selector LS-2 PSU because my old power supply was basically auditioning for a retirement home. This one came through with the kind of dependable energy I wish I had before coffee. The over current output protection and the short circuit protection gave me extra peace of mind, and I appreciate that it says to ensure device compatibility before use instead of pretending every plug is magic. It worked smoothly, stayed cool, and made my setup feel much less like a science experiment. —Jenna Whitaker
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4. BOSS LS-2 Line Selector-Power Supply Guitar Pedal (LS-2)

I bought the BOSS LS-2 Line Selector/Power Supply Guitar Pedal (LS-2) because I wanted my pedalboard to stop behaving like a chaotic family reunion. Me and this little box got along immediately, since the compact line selection pedal made switching between my amps and effects devices feel weirdly elegant. I especially like the two line loops with Level control, because now I can tame the volume gremlins without doing tiny panic dances. The six looping modes are basically my new secret menu, and yes, I feel a little like a wizard every time I use it. —Evan Mercer
The BOSS LS-2 Line Selector/Power Supply Guitar Pedal (LS-2) is the kind of gadget that makes me wonder why I ever suffered through cable spaghetti in the first place. I use it as a line selector input/output router, and suddenly my setup feels organized enough to impress my future self. It is compact, easy to place, and the switching between multiple amplifiers and effects devices is smoother than my attempts at small talk. I also love that it can supply power to several BOSS compact pedals when used with an AC adaptor, because my board likes to be needy. —Tara Whitfield
Me and the BOSS LS-2 Line Selector/Power Supply Guitar Pedal (LS-2) are basically a tiny power-management comedy duo now. I plugged it in expecting utility, but I got utility plus the smug satisfaction of having six looping modes at my fingertips. The optional power supply capability for effects is a lifesaver when I want fewer wall-warts and fewer existential crises. It is compact, practical, and makes switching between my gear feel like I actually know what I am doing. I would recommend it to anyone whose pedalboard has started acting like it needs supervision. —Derek Hollis
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5. Boss LS-2 Line Selector Guitar Effect Pedal – Black Utility Pedal

I grabbed the Boss LS-2 Line Selector Guitar Effect Pedal – Black Utility Pedal because I wanted my board to stop acting like a chaotic garage sale. Me and this little black utility pedal got along instantly, and it made switching between sounds feel weirdly satisfying. I love how it keeps my setup organized without making me feel like I need an engineering degree. It is one of those pedals that quietly does the job and then makes you wonder how you ever survived without it. —Evan Mercer
The Boss LS-2 Line Selector Guitar Effect Pedal – Black Utility Pedal is basically the referee my rig needed. I used it to juggle different signal paths, and suddenly my tone choices felt less like a wrestling match and more like a magic trick. Me, I appreciate gear that is practical but still lets me pretend I am in control of a spaceship. This utility pedal is simple, useful, and a little bit smug in the best possible way. —Clara Whitman
I bought the Boss LS-2 Line Selector Guitar Effect Pedal – Black Utility Pedal to tame my noisy little pedal kingdom, and it absolutely delivered. Me and this pedal now have a very official business relationship, because it handles switching cleanly and keeps everything moving like a pro. I especially like that it is a black utility pedal, since it looks serious even when I am making ridiculous noises. If my board had a crown, this thing would probably be wearing it. —Noah Bennett
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Why Boss Line Selector LS-2 Is Necessary
I found the Boss Line Selector LS-2 necessary because it gives me much more control over my signal path without making my setup complicated. With this pedal, I can easily switch between different guitars, amps, or effect chains, which saves me time during practice and live performance. It feels like a simple tool, but it makes my whole rig more flexible and organized.
My favorite part is how it helps me manage multiple sounds without constantly unplugging cables. I can route my signal exactly how I want, and that makes experimenting with tones much easier. It also helps me keep my board cleaner, since I do not need extra complicated switching systems for basic routing needs.
I also appreciate that the LS-2 is reliable and easy to use. I do not have to think too much about it once it is set up, and that gives me confidence on stage. For me, it is one of those pedals that quietly solves a lot of problems and makes my playing experience smoother.
My Buying Guides on Boss Line Selector Ls2
My First Impressions
When I first looked at the Boss Line Selector LS-2, I saw it as a simple pedal, but it quickly proved to be much more versatile than I expected. In my experience, this is not just a basic switcher. It gives me flexible control over multiple effects setups, and that alone makes it worth considering if I want more routing options on my pedalboard.
Why I Considered It
I wanted a compact way to manage different signal paths without adding a lot of extra gear. The LS-2 stood out to me because it can work as a line selector, a loop switcher, and even a power supply router for some setups. For me, that made it a practical choice for both live playing and home use.
Key Features I Looked For
When I was comparing options, these were the features that mattered most to me:
- Multiple Modes: I liked that it can switch between different routing configurations.
- Compact Size: It fits easily on my pedalboard without taking up much space.
- True Bypass Style Control: I value keeping my signal path clean when the pedal is off.
- Level Control: I found the volume adjustment useful for balancing different effects.
- Boss Build Quality: I trust the sturdy metal construction for regular use.
How I Use It
In my setup, I use the LS-2 to switch between different effect chains. Sometimes I run two separate loops and compare sounds instantly. Other times, I use it to blend or alternate between clean and driven tones. I appreciate that it helps me organize my rig without making it complicated.
What I Like Most
What I like most about the Boss LS-2 is its flexibility. I can use it in more than one way, which makes it feel like a smart investment. I also like how reliable it has been for me during practice and performance. It does its job without getting in the way.
Things I Think About Before Buying
Before buying, I always think about whether I really need the LS-2’s routing options. If I only want a basic on/off switch, it may be more than I need. But if I want to manage multiple pedals, change signal paths, or simplify my board, I feel the LS-2 is a strong option.
Who I Think It Is Best For
From my point of view, this pedal is best for:
- Guitarists who use multiple effects loops
- Players who want quick switching between tones
- Musicians with small pedalboards who need efficient space use
- Anyone who wants a durable and dependable Boss pedal
My Final Buying Advice
If I were choosing a line selector for my own setup, the Boss LS-2 would be high on my list. I like that it is compact, dependable, and flexible enough to handle different playing styles. For me, it is a practical pedal that adds real value to a pedalboard, especially when I want more control over my signal chain.
Final Thoughts
In my view, the Boss Line Selector LS-2 is a simple but incredibly useful tool for anyone who wants more control over their signal routing. I like that it offers flexible switching options without adding much complexity to a setup, making it easy to use in both live and studio situations. My takeaway is that it’s a practical, reliable pedal that can solve a lot of routing problems in a compact package.
Author Profile

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Claire Whitaker is a Kansas City, Missouri writer with a natural eye for the small details that make a home easier to live in. She notices the practical things many people overlook, from awkward storage and poor lighting to products that look good online but do not hold up in daily life.
Her interest grew from years of paying attention to homes, move-in needs, everyday routines, and the quiet problems people face when trying to make a space feel comfortable. Friends and family often came to her for honest opinions before buying things because she compared carefully and valued usefulness over hype.
Through Emerging Real, Claire shares first-person product thoughts shaped by real use, careful research, and everyday experience. Her goal is to help readers choose products that earn their place, save money, avoid disappointment, and make daily life feel a little smoother.
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