Pro-Ject wants to kill the speaker cable with the new Wireless Box E

For decades, “wireless audio” has mostly meant one thing:

wireless music… connected to speakers with giant cables running across your floor.

Now Pro-Ject is trying something genuinely different.

Its new Wireless Box E flips the usual streaming amplifier concept upside down by attaching a compact mono amplifier directly onto the back of a passive speaker—eliminating the need for traditional speaker cable runs almost entirely.

And honestly? This might be one of the more interesting “future-fi” ideas we’ve seen in a while.

What is the Wireless Box E?

The concept is surprisingly simple:

Instead of:

• one stereo amp

• long speaker cables

• separate speaker placement

You get:

• one tiny streaming amp per speaker

• mounted directly to the speaker terminals

Each unit:

• powers a single speaker (mono)

• streams wirelessly

• connects via banana plugs directly into the binding posts

For stereo, you need:

• 2 × Wireless Box E units

• one attached to each speaker

The setup philosophy

This is clearly designed for:

• cleaner rooms

• minimalist living spaces

• easier speaker placement

The goal is:

“hide the amplification at the speaker.”

So instead of dragging thick speaker cables across the room, you only need:

• power near each speaker

• Wi-Fi connection

But there’s a catch…

While Pro-Ject eliminates speaker cables…

…it replaces them with:

• two power adapters

• two DC cables

So the cable problem isn’t fully gone—it’s just transformed.

My honest take:

This works best in:

• modern apartments

• desktop setups

• rooms where power outlets are already near speakers

Less ideal if:

• your speaker placement is far from wall power

• 
  

• Power & amplification

Each Wireless Box E includes:

• 25W into 8Ω

• 50W into 4Ω

That’s enough for:

• efficient bookshelf speakers

• nearfield systems

• moderate listening rooms

But probably not ideal for:

• power-hungry floorstanders

• huge spaces

• difficult impedance loads

Interestingly:

• Pro-Ject does not specify the amplifier topology

• Nor the DAC chipset

That usually suggests:

• convenience/product concept is the focus

  more than

• hardcore audiophile engineering bragging rights

Streaming platform — the important part

The biggest hidden feature here is actually:

WiiM OS

That’s smart.

Because WiiM has become one of the most stable and user-friendly streaming ecosystems in affordable hi-fi.

Included:

• TIDAL Connect

• Spotify Connect

• Qobuz Connect

• Amazon Music

Also:

• Bluetooth 5.0

• SBC / AAC support

Missing features

Noticeably absent:

• AirPlay

• Roon Ready certification

That’s important because:many buyers in this category will expect them.

Especially AirPlay.

Physical design & practicality

This is where things get interesting.

The Wireless Box E physically mounts:

• directly to speaker terminals

Which sounds elegant…

…but speaker back panels vary wildly.

So:

• some speakers will work beautifully

• others may be awkward or impossible

Pro-Ject already knows this:they’re selling an optional short extension cable to help with compatibility.

Translation:the elegant concept may become messy depending on your speaker design.

The companion product — Stream Box E

Alongside the Wireless Box E, Pro-Ject also launched:

Stream Box E

This is a more conventional:

• streaming DAC

• network streamer

Features:

• RCA output

• optical output

• analog RCA input

• USB-C power

Essentially:

• a WiiM-style streamer in Pro-Ject form

Again:

• no AirPlay mention

• no Roon mention

• no DAC chipset specified

Pricing

Wireless Box E

• £199 / €229 per unit

• Meaning:

  • stereo setup = roughly £400+

Stream Box E

• £159 / €179

Personal take

I actually think this is smarter than it first appears.

Most “wireless hi-fi” today still assumes:

• powered speakers

  or

• ugly cable management

The Wireless Box E tries to modernize passive speakers without forcing users into a fully active ecosystem. That’s clever. But… This feels more like:

“lifestyle hi-fi innovation”

than

“audiophile revolution”

And that’s okay.

I can absolutely see this succeeding with:

• apartment users

• minimalist interiors

• younger streaming-first listeners

Especially people who:

• want passive speakers

• but hate traditional hi-fi clutter

The real question

Does this replace traditional amps?

No.

Does it make passive speakers dramatically more approachable?

Honestly… yes.

And that alone makes the Wireless Box E one of the more interesting hi-fi launches of 2026.

Bottom line

Pro-Ject isn’t trying to out-muscle traditional amplifiers here.

Instead, it’s asking a different question:

“What if passive speakers worked more like modern wireless products?”

The Wireless Box E may not be perfect, but it’s one of the few products genuinely trying to rethink how hi-fi fits into modern living spaces—and that makes it far more interesting than another black streaming box with HDMI ARC.