Pro-Ject - Stream Box E - Network Music Streamer & Preamplifier

Powered by the market-leading WiiM OS™. Multi-room capable. Analogue RCA input for turntable sharing. Optical digital output. The Pro-Ject Stream Box E is an entry-level, feature-rich network music streamer that adds Wi-Fi streaming, Spotify Connect, TIDAL Connect, Qobuz, and powerful multi-room capability to any existing hi-fi system — or builds the foundation for a new one.

Streaming Made Simple. Performance Made Serious.

The best streaming device is the one you forget is there — the one that works reliably, sounds great, and gets out of the way of the music. The Pro-Ject Stream Box E is exactly that. Powered by the market-leading WiiM OS™, it delivers fast operation, stable connectivity, and an intuitive user experience that makes the full breadth of modern streaming as effortless as pressing play.

Setting up the Wi-Fi connection takes moments. Open the Pro-Ject Home app, which automatically detects your new Stream Box E and walks you through the setup process. From there, every streaming service, every multi-room configuration, and every playback control is at your fingertips — on your phone, tablet, or whatever device you already use.

This is streaming done right: accessible enough for the first-time listener, capable enough for the dedicated audiophile.

One Device — Many Systems

The Stream Box E's versatility is one of its most compelling qualities. As a classic network streamer, it adds Wi-Fi streaming capability to any existing integrated amplifier — transforming a purely analogue system into a modern, connected one without replacing a single component. Paired with a standalone power amplifier and passive speakers, it becomes the source component of a complete, contemporary hi-fi system. Connected directly to active speakers, it enables a clean, minimalist hi-fi stereo setup that is as refined as it is simple.

Whatever your current setup, the Stream Box E has a role to play.

WiiM OS™ — The Market-Leading Streaming Platform

At the heart of the Stream Box E is WiiM OS™ — the streaming operating system that has rapidly established itself as the benchmark for reliability, responsiveness, and breadth of service compatibility. TIDAL Connect, Spotify Connect, Qobuz, AirPlay 2, Chromecast, Amazon Music, and countless other services are all natively supported, allowing listeners to use the apps and services they already know without learning a proprietary ecosystem.

The Pro-Ject Home app provides seamless access to settings, playback, multi-room management, and the Stream Box E's full feature set — from a single, well-designed interface that works exactly as you'd expect it to.

Pro-Ject True Wireless — Stream Any Input to Your Network

One of the Stream Box E's most distinctive features is its analogue RCA input — not just for local playback, but for sharing any connected analogue source across your entire multi-room Pro-Ject network. Connect your turntable, and its signal becomes available to every room in the network. This Pro-Ject True Wireless functionality — compatible with other WiiM products including the Uni Box S3, Wireless Box E, and other next-generation Pro-Ject streamers — transforms the Stream Box E from a simple streaming endpoint into a hub for your entire analogue and digital music collection.

Multi-Room — Your Whole Home, In Sync

The Stream Box E supports powerful multi-room audio capability through the Pro-Ject Home app — grouping multiple Pro-Ject streamers, synchronising playback, and managing zones from a single interface. Whether you are building a two-room system or a whole-home audio network, the Stream Box E's multi-room capabilities grow with your ambitions.

Built for Performance and Longevity

A robust aluminium front panel and metal chassis protect the Stream Box E's sensitive internal components while providing effective electromagnetic shielding. This allows the Stream Box E to be placed directly next to, or even stacked on top of, your amplifier without compromising audio performance — a thoughtful engineering detail that makes real-world system installation genuinely flexible.

Dual-band Wi-Fi (802.11 a/b/g/n/ac, 2.4GHz and 5GHz) ensures reliable streaming even in demanding network environments. Bluetooth 5.0 (SBC and AAC) provides wireless audio for those who want it. A gold-plated RCA analogue output delivers a 3Vrms signal with THD below 0.009%, SNR above 102dB, and channel separation exceeding 106dB — figures that confirm the Stream Box E's analogue output is engineered to a standard that honours the quality of the streaming source. An optical S/PDIF (Toslink) digital output enables connection to any DAC or digital amplifier.

Pro-Ject Stream Box E feature cards

📡 WiiM OS™ — Market-Leading Streaming Platform

TIDAL Connect, Spotify Connect, Qobuz, AirPlay 2, Chromecast, Amazon Music, and countless streaming services — all managed through the Pro-Ject Home app for effortless setup, playback, and multi-room control.

🎵 Pro-Ject True Wireless — Share Any Analogue Source

Connect your turntable to the RCA analogue input and stream it to every room in your multi-room Pro-Ject network — making the Stream Box E a hub for your entire music collection, analogue and digital alike.

🏠 Powerful Multi-Room Capability

Pair the Stream Box E with Uni Box S3, Wireless Box E, and other next-generation Pro-Ject streamers for whole-home synchronised audio — managed effortlessly from the Pro-Ject Home app.

🔊 Versatile System Integration

Use it as a streamer addition to an existing integrated amplifier, as a source for a power amplifier and passive speakers, or directly with active speakers — the Stream Box E adapts to whatever system you have or are building.

Editorial Blockquote

"The Stream Box E continues our new streaming generation powered by the market-leading WiiM OS™, delivering fast operation, stable connectivity, and an intuitive user experience." — Pro-Ject Audio Systems

At-a-Glance Bullets

• Powered by WiiM OS™ — market-leading streaming platform
• TIDAL Connect, Spotify Connect, Qobuz, AirPlay 2, Chromecast, Amazon Music, and more
• Pro-Ject Home app — setup, playback, multi-room management (iOS & Android)
• Pro-Ject True Wireless — stream any analogue input to your multi-room network
• Multi-room capable — pairs with Uni Box S3, Wireless Box E, and next-gen Pro-Ject streamers
• Cross-compatible with other WiiM products
• Dual-band Wi-Fi — 802.11 a/b/g/n/ac, 2.4GHz and 5GHz
• Bluetooth 5.0 — SBC and AAC codec
• Analogue RCA stereo input — turntable or any analogue source
• Analogue RCA stereo output — 3Vrms, gold-plated
• Optical S/PDIF (Toslink) digital output
• THD (line out): < 0.009%
• SNR (line out): > 102dB
• Channel separation (@ 10kHz): > 106dB
• Frequency response: 20Hz–20kHz (@ –1.5dB)
• Power supply: 5V/1000mA DC (100–240V, 50/60Hz) — outboard
• Power consumption: 200mA DC
• Aluminium front panel & metal chassis — EMI shielding
• Stackable on amplifier without audio compromise
• Available in Black and Silver

Pro-Ject Stream Box E finish / colour options

• Black
• Silver

Closing Quote

"Entry-level in price. Not in performance. The Pro-Ject Stream Box E brings the full breadth of modern streaming — and your entire analogue collection — to any hi-fi system, in one compact and beautifully engineered package."