Cambridge Audio has added a new model to its Evo lineup, and this one is clearly aimed at listeners who like the clean look of an all-in-one system but still want serious power behind their speakers.

The Cambridge Audio Evo 300 is a streaming integrated amplifier with 300 watts per channel into 8 ohms, Hypex NCOREx Class D amplification, a built-in DAC, HDMI eARC, a moving-magnet phono stage, and Cambridge’s StreamMagic Gen 4 streaming platform. It is available for pre-order at Crutchfield for $3,999.

That price puts it firmly in premium hi-fi territory, but the idea behind the Evo 300 is easy to understand. Instead of building a system around a separate amplifier, DAC, streamer, phono preamp, and TV audio input, Cambridge is packaging those pieces into one full-width component. Just add speakers, connect your sources, and the Evo 300 handles the rest.

The Evo line has been around for several years, with models like the Evo 75 and Evo 150 helping Cambridge Audio push further into the modern streaming amplifier space. The Evo 300 sits above those models and brings a more powerful amplifier section, a larger chassis, and a more advanced internal layout.

The headline number is the power output: 2 x 300 watts into 8 ohms, or 2 x 550 watts into 4 ohms. That does not automatically tell you how the amp will sound, but it does suggest that Cambridge designed this model for larger rooms, less sensitive speakers, or listeners who want more headroom than the smaller Evo models provide.

Inside, Cambridge uses Hypex NCOREx Class D amplification, arranged in a dual-mono layout. In simple terms, that means the left and right channels are treated more independently than they would be in a more basic shared design. Cambridge also uses a balanced preamp stage and separate analog volume controls for the left, right, and subwoofer outputs.

For buyers comparing it to the Evo 150 SE, the Evo 300 is not just “the same thing with more watts.” It adds a more serious amplifier platform, balanced XLR input, more flexible bass management, and a bigger 7.8-inch color display.

Here are the main details buyers will probably care about:

• 300 watts per channel into 8 ohms, 550 watts per channel into 4 ohms
• Hypex NCOREx Class D amplification
• ESS Sabre ES9038Q2M DAC
• Up to 32-bit/768kHz PCM and DSD512 support via USB
• HDMI eARC for TV audio
• Moving-magnet phono input for turntables
• RCA, balanced XLR, optical, coaxial, USB, and Bluetooth 5.4 inputs
• AirPlay 2, Google Cast, Roon Ready, Spotify Connect, TIDAL, Qobuz, Deezer, Amazon Music, UPnP, and Internet Radio
• Subwoofer output with app-controlled crossover, phase, and level
• Speaker A/B outputs for two speaker zones
• 6.35mm headphone output
• Customizable side panels

That is a long list, but the important part is how many real-world use cases it covers. The Evo 300 can sit in a two-channel music system, connect to a TV through HDMI eARC, take a turntable directly through its built-in phono stage, and stream from most of the major music services without requiring another box.

HDMI eARC is one of the more useful additions here because it lets the Evo 300 double as a TV audio hub. That matters for people who want better sound from a TV but do not want a traditional AV receiver or a soundbar. With the right speakers, the Evo 300 could handle both music listening and everyday TV audio in the same room.

The subwoofer controls are also worth noting. Many stereo integrated amps include a subwoofer output, but they do not always give users much control over how that sub integrates with the main speakers. Cambridge says the Evo 300 allows crossover, level, and phase adjustment through the StreamMagic app, along with optional high-pass filtering for the main speakers.

That gives you more room to tune the system, especially in smaller or awkward rooms where bass can easily become too thick or uneven.

Cambridge’s StreamMagic platform is doing a lot of the work on the software side. The Evo 300 supports Spotify Connect, TIDAL, Qobuz, Deezer, Amazon Music, Internet Radio, UPnP, AirPlay 2, Google Cast, and Roon Ready playback.

That means you are not locked into one streaming ecosystem. An Apple Music listener can use AirPlay 2. A Roon user can fold it into an existing library. Someone with a NAS full of ripped CDs can use UPnP. And people who just want to open Spotify or TIDAL and hit play can do that, too.

The front display can show album art, track information, VU meters, or a clock, depending on how the user wants the unit to look in a room. Cambridge also includes interchangeable side panels, which keeps the Evo design language intact while giving buyers some flexibility with the finish.

The Evo 300 is not trying to be a budget-friendly streaming amp. At $3,999, it is more likely to appeal to buyers who were already considering a serious two-channel system but want to avoid a stack of separate components.

It makes the most sense for someone who wants:

• A powerful stereo amplifier for passive speakers
• Modern streaming without a separate network player
• TV audio through HDMI eARC
• A turntable input without buying an external phono preamp
• A cleaner setup with fewer cables and boxes

The main question is whether an all-in-one design at this price makes more sense than buying separates. For some listeners, separates still offer more flexibility for future upgrades. For others, the Evo 300’s appeal is that most of the system is already sorted in one box.

Cambridge Audio is clearly betting that more hi-fi buyers want that kind of simpler setup, especially as streaming, TV audio, vinyl, and multi-room listening continue to overlap in the same living spaces. The Evo 300 gives that buyer a more powerful option than Cambridge’s earlier Evo models, while keeping the same basic promise: one stylish component, a pair of speakers, and access to almost every source most people use today.