Pro-Ject Stream Box S2 - Silver

A Streamer Built Like the Amplifiers Beside It

The market is full of wireless streamers, and most are plastic boxes built around an app. Pro-Ject's argument for the Stream Box S2 is that the app is the easy part, and what actually decides the sound is the converter and the analog output stage behind it.

So the Stream Box S2 was built to match the Box-series amplifiers it sits next to, the MaiA S2 and the Stereo Box S2, in both sound and appearance. On a shelf of those, it looks and behaves like part of the same set.

What It Streams

High-resolution playback runs to 24-bit and 192kHz. The app handles the services and your own library, and the whole thing is designed to disappear into a system rather than to dominate it.

Multi-Room That Keeps the Quality

Most multi-room systems drop to MP3 quality to stay reliable across several rooms. The Stream Box S2 holds CD quality, 16-bit and 44.1kHz, across every zone, and limits the count to ten over Ethernet or six over Wi-Fi to make sure the data actually arrives.

Or Make a Stereo Pair

Two units can be assigned as left and right channels instead, which turns a pair of them into a stereo system in its own right. It is an unusual trick and it suits rooms where running speaker cable is not an option.

If you have active speakers, put the Stream Box S2 next to them and feed them directly. That is the shortest signal path this arrangement allows, and it removes an amplifier from the room altogether.

Who Is This Streamer Best For?

• You own Pro-Ject Box-series components — this was designed to match the MaiA S2 and Stereo Box S2 in sound and in looks, so the shelf stays coherent.
• You want multi-room without the quality drop — CD quality holds across every zone rather than falling back to MP3 the way most systems do.
• You have active speakers — place it beside them and feed them directly, which removes an amplifier from the room entirely.
• You want a stereo pair without cable — two units can be assigned left and right, which suits a room where running speaker cable is not practical.
• The Stream Box S2 has no amplifier — passive speakers need one between the two, though active speakers connect directly. Pair it with one of our integrated amplifiers.

How Does It Connect to Your System?

Join it to your network over Ethernet or Wi-Fi and control it from the Pro-Ject app. Ethernet allows up to ten zones and Wi-Fi up to six, which is the limit that keeps the quality where it should be.

The analog output runs to an amplifier or straight into a pair of active speakers. Two units can be paired as left and right channels instead, if that suits the room better.

Pairs Well With

Building your system? Here are some great companions:

• Integrated Amplifier: The usual partner — browse our Integrated Amplifiers.
• Speakers: Active or passive, both work — see our Bookshelf Speakers.
• Cables: A short run into your amplifier — see our Interconnect Cables.
• DAC: If you would rather use your own converter — see our DACs.

Frequently Asked Questions

What resolution does it stream?

Up to 24-bit and 192kHz. Multi-room playback runs at CD quality, 16-bit and 44.1kHz, across every zone.

How many rooms can it cover?

Ten zones over Ethernet, or six over Wi-Fi. Those limits exist so the data arrives intact at CD quality.

Can two of them work as a stereo pair?

Yes. Two units can be assigned as left and right channels.

Can I use it with active speakers?

Yes, directly. Put it beside them and it feeds them without an amplifier in between.

Why does the converter matter more than the app?

Because the app only chooses the music. The converter and the analog output stage decide what it sounds like.

What does it match in the range?

The MaiA S2 and Stereo Box S2 amplifiers, in both sound and appearance.

See It in Action

hxos plus takes the Stream Box S2 apart, with English captions:

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Learn More

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