Description
Pro-Ject Wireless Box E Plug-in Streaming Amplifier
The Pro-Ject Wireless Box E Plug-in Streaming Amplifier is a clever solution for customers who want wireless convenience without giving up passive speakers.
The idea is simple. Attach a compact amplifier directly to each speaker. Then stream to the speakers over Wi-Fi. As a result, you avoid long speaker cable runs across the room.
This makes a lot of sense for modern NZ homes. For example, it can help in living rooms, offices, apartments, and multi-room spaces where running cable is difficult. It is especially neat with compatible Pro-Ject speakers because the Wireless Box E can plug straight into the speaker terminals.
We also like the WiiM OS platform. It gives the system a familiar and flexible streaming base. Plus, it supports multi-room playback and modern app control. Therefore, this is more than just a wireless adapter.
Each unit is a mono streaming amplifier, so you use one Wireless Box E per speaker. It delivers 1 x 25W into 8 ohms or 1 x 50W into 4 ohms, with streaming powered by WiiM OS. It also supports dual-band Wi-Fi, Bluetooth 5.0, multi-room playback, and control through the Pro-Ject Home app.
It is important to note that this is sold and used as a per-speaker solution. For stereo playback, you need two Wireless Box E units. Also, for non-Pro-Ject speakers, the optional Connect it LS Flex extension cable may be required.
For customers wanting a clean, space-saving streaming speaker setup, this is a very smart Pro-Ject solution.
User Manual >> View Product Information >> View Pro-Ject Audio Products >>
FAQ’s
- What does the Pro-Ject Wireless Box E do?
The Wireless Box E turns a passive speaker into a wireless streaming speaker. It plugs into the speaker terminals and provides both amplification and wireless streaming. Therefore, it removes the need for a separate amplifier next to the speaker. - Do I need one or two Wireless Box E units?
Each Wireless Box E powers one speaker. So, for a stereo pair, you need two units. One unit is used for the left speaker, and one is used for the right speaker. they both come with their own power source, so you will need a power plug nearly. - Does the Wireless Box E work with non-Pro-Ject speakers?
Yes, it may work with other passive speakers. However, it is designed to connect directly to Pro-Ject speaker terminals. For speakers from other brands, Pro-Ject offers the optional Connect it LS Flex extension cable. Please check before buying that it will work with your speakers. - How much power does the Wireless Box E provide?
It delivers 25W into 8 ohms or 50W into 4 ohms. This makes it best suited to compact passive speakers, nearfield listening, and small to medium spaces. - What streaming platform does the Wireless Box E use?
The Wireless Box E uses WiiM OS and is controlled through the Pro-Ject Home app. As a result, it supports modern streaming and multi-room functionality. - Does the Wireless Box E support Bluetooth?
Yes, it includes Bluetooth 5.0 with SBC and AAC codec support. This is useful for quick casual streaming from phones, tablets, and computers. - Is the Wireless Box E a normal stereo amplifier?
No, it is a mono plug-in streaming amplifier. It is designed to be attached to a single passive speaker. Therefore, it is different from a traditional stereo amplifier that powers both speakers from one box.
What the Experts Say
- Darko Audio described the Wireless Box E as a different approach to wireless hi-fi. It noted that the unit clips to the back of a passive loudspeaker, receives audio over Wi-Fi or Bluetooth, and reduces long speaker cable runs.
- What Hi-Fi? reported that the Wireless Box E is designed to transmit audio to passive speakers wirelessly. It also noted that each unit attaches to a single speaker, meaning two units are required for stereo use.
- Gear Patrol called the Wireless Box E one of the more interesting parts of Pro-Ject’s new streaming lineup. It highlighted the direct rear-speaker-terminal connection and its “backpack for your bookshelf speaker” concept.
Ideal For
- Wireless stereo speaker setups
- Compact rooms and apartments
- Multi-room audio systems
- Customers wanting fewer visible cables
- Pro-Ject speaker owners
- Desktop, office, and lifestyle audio setups
Key Features
- Streaming Technology powered by WiiM OS™
- Attached directly to speaker terminals
- Turns any passive speaker active
- Pro-Ject True Wireless Receiving: Any turntable, CD player, FM/DAB radio, TV, etc. connected to Uni Box S3, Stream Box E or other next generation Pro-Ject streamers* can be streamed to Wireless Box E
- Wireless vinyl streaming from T2 W
- Pro-Ject Home App – access to countless streaming services
- 1 x 25W/50W at 8/4ohms
- Dual band Wi-Fi 802.11 a/b/g/n/ac 2.4 GHz & 5 GHz
- Multiroom capable
- Compatible with Uni Box S3, Stream Box E and next generation Pro-Ject Streamers
- Aluminium front panel & metal chassis
- Available with silver or black front-panels
Turns Passive Speakers Wireless
The Wireless Box E converts compatible passive speakers into wireless streaming speakers. It connects directly to the speaker terminals, so you do not need a separate amplifier nearby.
Plug-In Mono Amplifier Design
Each Wireless Box E powers one speaker. Therefore, a stereo system requires two units, one for the left speaker and one for the right speaker. What Hi-Fi? also confirms that two are needed for stereo setups.
25W / 50W Output
The built-in amplifier delivers 1 x 25W into 8 ohms or 1 x 50W into 4 ohms, measured at 1% THD. This is ideal for compact speakers, nearfield systems, and smaller listening spaces.
Powered by WiiM OS
Streaming is powered by WiiM OS. As a result, the Wireless Box E gains access to a strong app ecosystem, multi-room features, and modern streaming support.
Dual-Band Wi-Fi
Dual-band Wi-Fi supports 2.4GHz and 5GHz networks using 802.11 a/b/g/n/ac. Therefore, the system can connect reliably to modern home networks.
Bluetooth 5.0
Bluetooth 5.0 is included for quick wireless playback. It supports SBC and AAC codecs, making it easy to stream casually from phones, tablets, and computers.
Multi-Room Capable
Wireless Box E can be used as part of a multi-room streaming setup. This makes it useful for whole-home audio and compact speaker zones.
Optional Extension Cable for Other Speakers
It is optimised for Pro-Ject loudspeakers. However, speakers from other brands can be used with the optional Connect it LS Flex extension cable, depending on fit and installation needs.
Perfect System Match
- Pro-Ject passive loudspeakers
- Pro-Ject Stream Box E
- Pro-Ject Uni Box S3
- Small to medium rooms
- Minimalist streaming systems
- Cable-free speaker installations
Specifications
Brand: Pro-Ject
Model: Wireless Box E
Product Type: Plug-in Streaming Amplifier
Amplifier
Mono streaming amplifier
Power Output
1 x 25W into 8 ohms
1 x 50W into 4 ohms
Rated at 1% THD
Streaming Platform
WiiM OS
App Control
Pro-Ject Home app
Wi-Fi
Dual-band Wi-Fi
2.4GHz / 5GHz
802.11 a/b/g/n/ac
Bluetooth
Bluetooth 5.0
Bluetooth Codecs
SBC
AAC
Multi-Room
Multi-room capable
Frequency Response
20Hz – 20kHz
Less than -1.5dB at 4 ohms
Signal-to-Noise Ratio
96dB
100dB, A-weighted, at 4 ohms
Channel Separation
-67dB at 10kHz
Total Harmonic Distortion
Less than 0.12% at 5W / 4 ohms
Speaker Output
4mm banana plugs
Gold-plated banana connectors
Compatibility
Designed for direct connection to Pro-Ject speaker terminals
Optional Connect it LS Flex cable available for other speaker brands
Power Supply
22V / 1A DC
100–240V, 50/60Hz
Supplier with each unit
Standby Power Consumption
Less than 0.5W
Construction
Aluminium front panel
Metal chassis
Finish
Black front panel
Silver front panel
MPN: WIRELESS-BOX-E
SKU: PROJ-WIRELESS-BOX-E
EAN / UPC / GTIN: 9120137902730
Why Buy From Rapallo
✔ Authorised Pro-Ject dealer
✔ Expert streaming and speaker matching advice
✔ NZ warranty support
✔ Setup and multi-room guidance
✔ Trusted NZ hi-fi specialists








































