Learning how to build an amp from an old radio is not only a sweet upcycling project, but it’s also so easy that it blew my mind. The coolest thing is how unique each radio can look and sound: an older radio might offer a vintage or low-fidelity tone, while a newer radio might offer more portability or a cleaner sound. Your new amp will be one of a kind!
Here’s everything you’ll need to complete this project:




Finding your perfect radio could be as easy as taking a trip to the local thrift store or doing a quick search on eBay. When on the lookout, try keeping in mind which features are most important to you. Some radios have tone, equalizer, or squelch knobs that would allow you to have more control of your final sound. Some are battery-powered, have a built-in handle, or a headphone jack—all of which would make them a sweet travel companion.
Once you’ve found your dream radio, it’s time to rip it open (as gently as possible).
To start, you’ll need to remove any knobs or switches from the radio. This can be done by placing a flathead screwdriver in the space between the knob and body of the radio and lifting it up.


Next, you’ll need to remove any screws holding the outer casing together. These will usually be found in the corners on the back of the radio, and sometimes there may be one or two hidden in the battery tray.


Once you’ve removed all of the screws, opening up your radio could be as simple as pulling one side apart from the other, but you might need to stick your flathead screwdriver in the lip between each side for leverage. (Similar to the knobs.)


Now that your future amp is ripped open, it’s time to locate the circuit board. Mine was protected under my radio’s control plate. They’re pretty easy to recognize, but yours might be flipped over or protected like mine, so you’ll need to remove any screws holding it or its cover in place to gain access.


Now you’ll need to get your quarter-inch jack ready for the job of its lifetime… Start by cutting yourself a couple pieces of wire. Make sure to give yourself enough slack for when it’s time to decide where your jack will rest. Next, you’ll need to strip both ends of each wire to expose them. I used scissors to do this, but a wire cutter or wire stripper would be the better option.


Now that your wires are prepared, you’ll need to solder them onto your jack. When looking at your jack, you’ll notice two small pieces sticking out across from each other. These are called solder lugs. One will be connected to the center of the jack and slightly shorter; this part of the jack is called the sleeve and will be for your ground wire. The other will be more towards the outside and slightly longer; this part of the jack is called the tip and will be for your hot wire. To understand the difference between the tip and the sleeve, take a look at your instrument cable. It also has a tip and sleeve that are usually separated by a thin black line. On the cable, the tip is hot and provides the sound coming from your guitar and the sleeve acts as a ground signal that helps contain any unwanted noise coming from the guitar. The jack conducts these signals when your cable is plugged in.
If you have multi-colored wire, this makes the organization of this step much simpler. I used my black wire as my ground wire and soldered it to the center lug of my jack. Then I used my red wire as my hot wire and soldered it to the outer lug of my jack.


With your jack prepared, it’s time to figure out where to connect it on the circuit board. You’re looking for the piece called the volume pot. It’s pretty easy to find because it’s what your volume knob attaches to. It’s also easily recognizable because it will have multiple solder lugs. Here’s what mine looks like:


To find out which lug you’ll be attaching your wire to, you’ll need to do a little experimenting. Start by plugging your instrument into your jack.
Next, you’ll need to find a negative point on your radio to solder your ground wire to. The easiest spot to find is the negative terminal used for the radio’s battery case. Something should already be soldered there, so you’ll just need to solder your wire to the same spot.


Now you’ll need to power on your radio. With your hot wire in hand, locate the volume knob and start placing the tip of your wire on each lug while strumming your guitar or playing your instrument. You’re looking for the lug that not only amplifies your instrument, but also allows the volume knob on the radio to control your instrument’s volume. Once you’ve found it, turn your radio off and solder your hot wire onto it.


Now that you’ve got the amp working, it’s time to put it back together again.
First, you’ll need to find a home for your jack. Unplug your instrument cable and experiment with different spots on the amp. You’ll need to make sure your jack has enough room to not interfere with the other parts coming from the circuit board, and that you’ll be able to close your radio completely.
Once you’ve found your spot, cut a hole into the casing of the radio that’s big enough to place the tip of your jack into. After removing the washer and nut from your jack, cut your hole using a drill or sharp object. When your jack fits through, reattach the washer and nut to secure your jack in place.


Next, you’ll need to reattach your circuit board and/or cover if you removed them. Following that, close your radio up and reattach the screws and knobs that were removed at the beginning.
If you’ve made it this far, then you should be the proud new owner of a sick guitar amp that you put together yourself! Pretty sweet, right?


One of the most significant elements about Yamaha is their desire to push forward rather than rehash what’s already been done. “Yamaha isn’t reliant on nostalgia,” says LG of Thelma and the Sleaze, and player of the Yamaha Pacifica. “They want to keep pushing boundaries and trying things out.” And this is also true in their designs, customer service, and image—rather than uphold the tired portrait of rock gods and goddesses, they aim to showcase a genre-bending lineup of musicians to inspire novices and long-time shredders alike.
Let’s be honest—when Yamaha comes to mind, most of us think of keys or motorcycles. But have you ever wondered why one of the biggest manufacturers of pianos started making guitars in the first place? Yamaha’s history traces back to 1887 with founder Torakusu Yamaha, a pioneer in the production of Western musical instruments in Japan. Yamaha mostly focused on organs and pianos until the early 1940s, when they started building guitars. After such success with piano production, the company decided to manufacture a variety of instruments to provide more musical opportunities to their customers. This shift came before rock music became widely popular, and eventually Yamaha opened a guitar factory later that decade.


Fast forward to the 1960s when Beatlemania exploded, resulting in an increased demand for guitars that retailers couldn’t keep up with, especially in the United States. At this time, Yamaha already had 20 years of guitar building under their belt, and began exporting guitars outside of Japan, setting out on the path to becoming the largest instrument manufacturer in the world.
Over the years their lineup grew to cater to all kinds of guitarists, covering everything from the pretty ordinary to the frankly absurd, but a few things stand out in particular:
So, what makes today’s Yamaha guitars reliable? And why should we care?
She Shreds spoke with four groundbreaking artists on the Yamaha roster to truly understand how a company, who celebrated its 50th anniversary in 2016, keeps moving forward in the guitar industry—not only through craftsmanship, but also accessibility, playability, and artist relations.


When it comes to a guitar to take on tour, LG looks for an affordable, quality instrument: “At the end of the day, I need a guitar that is versatile, because my band plays with a lot of dynamics and different genres. But also, it’s gotta look good, and able to be thrown in a van. It’s gotta be about quality—I don’t want to align myself with a company that isn’t worth people’s money.”
LG often plays a Yamaha Pacific PAC311H electric guitar, and took it with her on a couple of tours with Thelma and the Sleaze. “The P-90 and humbucker are sick,” she says. She also loves that the Pacifica is the perfect weight for her, and that it’s only gotten better with age over the two years she’s been playing it. Aesthetically, she really likes the natural finish and the tortoise-style pickguard. “Everyone who talked to me after our shows was like, “What is that?” And I was like, ‘It’s the Yamaha Pacific. You can literally get one for 300 dollars.’”
She adds that when she was a little girl, she didn’t see herself reflected in guitar media: “I was a little girl once, reading guitar magazines or looking at guitar ads—I have a lazy eye, I was poor. There are kids out there who don’t look like models, who aren’t pretty, and they don’t want to be. They need to see women they can aspire to be like.”
So, when LG was featured in a Yamaha guitar ad, it blew her mind: “Yeah, you don’t think I should be in a guitar ad, but that’s why they put me in there. And that’s amazing. There are a lot of people with lazy eyes, and it’s silly to say, but I’m a good representation of what you can do with that lazy eye.”


Laura Jane Grace is no stranger to the touring life, so she knows exactly what she needs while traveling internationally. When she went on an overseas Against Me! tour in 2019, she was restricted in what gear she could bring on the plane, so she went looking for an acoustic-electric guitar that could fit in an overhead compartment. Grace needed something that would be easy to grab, bring in the hotel, and have in the van—but that also sounded good both when played unplugged and through a DI. She reached out to Yamaha, and they suggested the Yamaha CSF3M, a parlor-sized acoustic-electric guitar.
“Sometimes it’s really easy with an acoustic guitar, played through a PA, to feel like you’re playing a ukulele. You know, that sound you get back—this thin, boring acoustic sound,” says Grace. “Finding a guitar that’s the best of both worlds is hard to do.”
The CSF3M has become Grace’s go-to acoustic guitar with both of her bands, using it on solo and full-band songs: “Playing it live or alone in my room, I just really love it. There’s something about smaller-bodied acoustic guitars.”


It’s all about playability when it comes to the guitars Dre Babinski plays. The singer-songwriter aka Steady Holiday needs a smaller-bodied electric that’s easy to play, and light enough to wear for an extended period of time. In March, Babinski connected with Yamaha at SXSW, when they approached her about playing their showcase with one of their guitars. “I had a few conversations with a rep, and told him what I was looking for and tried a few styles,” she says. “I really connected with the Revstar.”
On the lighter side, the Revstar makes it more comfortable for Babinski to play through an entire set. She also appreciates the size: “It has a narrow and thin neck, so it’s easy for me to get around the instrument, which is something I struggle with—I’m a pretty small person.”
Babinski claims that she’s still very much in her formative years of songwriting, and usually only sees opportunities like the one with Yamaha offered to artists further along in their careers. “I’m not a shredding guitar player, I feel like a novice in some ways,” she says. “But this is the stage of an artist’s career when they need the most support, when they literally need a guitar. With Yamaha, it’s more about what worlds people are building, and what they want to get behind.”


Gabriela Quintero, rhythm guitarist in the Mexican acoustic guitar duo Rodrigo y Gabriela, has a lot of acclaim. The band has released five studio albums, three live albums, and one EP; they’ve contributed to major motion picture soundtracks; they’ve toured internationally and even performed at The White House for President Barack Obama; and they were recently nominated for a 2020 Grammy for Best Contemporary Instrumental Album for their 2019 album, Mettavolution.
So, they’re well on their way to legendary status.
As a rhythm guitarist with percussive duties, Quintero often worries about her live levels and quality of sound. “We play very high energy gigs,” she says. “People are clapping and standing, so the levels need to be really strong, almost as if I were supporting a high energy, hard rock band.” Quintero worked with Yamaha to create guitars that have powerful technology to recreate what she plays unplugged. Regarding her current NCX custom stage guitars, she says, “I can reproduce that acoustic sound at really high levels, so it sounds like an explosion of rhythms and percussive energy. The pickup system of the NCX Custom guitar is very complicated in that it uses multiple pickups mounted in specific locations of the body to support my percussive playing style. However, when we started talking with Yamaha about the New NX Signature Label Guitars, we realized we would need to go with a new pick-up system that would accommodate all styles of music and players.”
Yamaha recently released the new Yamaha NX Series of nylon string guitars, which includes their Rodrigo Y Gabriela NTX-5 & the NCX -5 Signature Label guitars. These guitars are powered by Yamaha’s brand-new Atmosfeel pickup systems, which are so simple to use with only three knobs to dial in what you need when playing at home, the studio, or the stage with complete confidence. “I don’t know how it works, I just know that it works, that’s what I know.”