Pro-Ject is rolling out two small, fairly practical products aimed at one specific problem: how to add modern streaming to a system that wasn’t built for it. The new Stream Box E and Wireless Box E both run on WiiM OS, which means they’re not tied to a closed ecosystem and instead plug into a wider range of streaming services and multi-room setups.
These aren’t all-in-one replacements for your system. They’re more like add-ons, tools you can drop into an existing setup to make it a bit more flexible without replacing everything you already own.
The Stream Box E is the easier one to wrap your head around. It’s a compact network streamer that connects to your amplifier or active speakers and gives you access to streaming services like Spotify, Tidal, and Qobuz.
In other words, it does what a lot of small streamers do, but it leans on WiiM’s software platform rather than something proprietary. That usually means better app support, easier setup, and fewer compatibility headaches down the line.
It also includes an analog RCA input, which is a bit of a nice extra. You could, for example, connect a turntable or CD player and then send that signal to other compatible devices in your home. That’s not something every streamer in this price range bothers with.
Here’s a quick breakdown of what you’re getting:
The Stream Box E is available now, priced at €179 / £159. US pricing TBA.
The Wireless Box E is where things get a bit more unusual. Instead of sitting on your rack, this device attaches directly to the back of a passive speaker and effectively turns it into a powered, wireless speaker. Each unit powers a single speaker, so you’ll need two for stereo.
It’s not a completely wire-free setup, as you still need power at each speaker, but it removes the need to run speaker cables across the room from a central amplifier. That alone could make it useful in certain rooms or layouts where cable management is a headache.
Power output is modest but usable for smaller setups:
And feature-wise:
The Wireless Box E is expected to land in late May, priced at €229 / £199 per unit. US pricing TBA.
One of the more important details here isn’t hardware, it’s software.
By using WiiM OS, Pro-Ject is leaning on an ecosystem that already supports multi-room playback and a wide range of streaming services. That’s a different approach compared to building a closed system from scratch, and it could make these boxes easier to live with day to day.
There are some trade-offs, though, as there is no native AirPlay support, which could matter if you’re deep in the Apple ecosystem. But for everyone else, the broader compatibility might be the bigger win.
The Stream Box E is the safer bet. It’s essentially a plug-and-play upgrade for anyone with an existing amp or active speakers who wants to add streaming without overthinking it.
The Wireless Box E is more niche. It makes sense in specific situations, like when running speaker cables isn’t practical, or when you want to place speakers in a room without building a full system around them.
Neither product is trying to reinvent anything. The pitch is simple: keep your current gear, add streaming, and avoid a full system overhaul.
For a lot of people with older hi-fi setups, that might be exactly what they’re looking for. If you are interested in other Pro-Ject products, check out their gear at Crutchfield.
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