Understand any stock in simple English
Enter a ticker to learn what the company does and how it makes money.
Cirrus Logic designs audio and mixed-signal chips that go into smartphones, PCs, and consumer electronics.
Cirrus Logic makes the tiny chips that turn electrical signals into sound you can hear — and sound you can barely hear — inside many of the gadgets you already own. Its specialty is mixed-signal chips, which is engineer-speak for chips that live at the border between the real world (sound, voltage, analog signals) and the digital world of ones and zeros. The company's chips handle audio in smartphones, PCs, tablets, and other consumer devices, and its biggest customer by far is Apple, whose iPhones and other products use Cirrus parts.
Here's the basic problem it solves. When you talk into a phone or listen through earbuds, the sound has to be converted into digital data and back again, cleanly and with as little noise as possible. That takes clever analog circuitry — the kind that is hard to design and even harder to make power-efficient. Cirrus sells that expertise as a chip. Device makers buy it because getting audio right is fiddly, and a well-known chip partner saves them time and risk. The company also sells audio amplifiers and related parts, and it has been pushing into laptop audio and other areas beyond the phone. The danger is concentration. Apple is Cirrus's largest customer and accounts for a huge share of its revenue, so a design change or a new supplier inside one Cupertino product line can move the stock a lot. The company has worked to diversify into Android phones, PCs, and newer audio uses, but Apple's shadow is still the main thing investors watch. Competition comes from other chipmakers and from customers designing their own parts in-house — a real threat for any supplier tied to one giant buyer.
Cirrus has historically been a cash machine, using its profits to buy back its own stock and fund new chip development. That's a common move for a chip company with steady cash flow and not much need for giant factories — it designs chips and pays partners to actually manufacture them. The whole business, in one sentence: it sells the small, hard-to-build pieces that make sound work in the devices you use every day, and it lives or dies on keeping its biggest customer happy.
Saved answer · last researched 15 Nov 2026