ARCAM ST25 Streaming Player

Thank you for choosing ARCAM. ARCAM has been producing specialist Hi-Fi and home cinema products for over 45 years. The ARCAM ST25 is the latest in a long line of award-winning digital audio products.

The ARCAM ST25 provides an inclusive feature set supporting Airplay and Google Cast, as well as popular streaming services like Spotify Connect, Tidal Connect, and Roon.

Package Contents

ARCAM ST25 streaming music player
IR remote control
2x AAA batteries for the remote control
Region specific power cords
RJ11 control cable
Quick start guide
Safety and compliance document

For technical assistance, contact ARCAM support at luxurysupport@harman.com or by telephone at +441707668012 or +18886914171. Further information is available on the ARCAM website at ARCAM.co.uk.

Services Supported

Spotify Connect
Tidal Connect
Apple AirPlay
Google Cast
Roon (requires additional setup)
Internet Radio
Podcasts
UPnP
USB Media

Supported Audio Formats

Supported media: FLAC, WAV (LPCM), AAC, ALAC, AIFF, DSD (up to 256), M4A, MP3, OGG, WMA
Supported Bit depth: 16, 24, 32
Supported sample rates: Up to 384 kHz
Gapless Playback: Yes

Placing The Unit

Place the streamer on a level, firm surface, avoiding direct sunlight and sources of heat or damp.
Do not place the ST25 on top of an amplifier or other heat source.
Ensure the remote-control receiver on the front panel is unobstructed.
Do not place record decks on top of this unit due to potential noise interference.
Strong electromagnetic interference may disturb normal function; reset the unit or move it if this occurs.

The product offers the option to deactivate power management functions, which will increase energy consumption.

Wi-Fi Setup - ARCAM Radia App

Download the ARCAM Radia app to your smartphone or tablet.
Power on the ARCAM ST25 streamer and open the app.
Follow the prompts to connect the ST25 to your Wi-Fi router.
Once connected, the ST25 will appear with a "POWER" icon.
Select the ST25 to access various features and settings.

Front Panel

The front panel features a display and the ARCAM logo.

Rear Panel Connections

Power Input: Connect the supplied power cable here.
Power Switch: Switches the unit on or off.
USB Socket: Connect a USB stick for media playback.
Network (Ethernet Socket): Connect to your home network using a Cat 5e or Cat 6 cable for wired connections.
Control: Use the supplied Control Cable to connect to an ARCAM Radia amplifier.
Trigger Out: For external control.
Optical SPDIF Output: Connect to a digital input on a separate DAC.
Coaxial SPDIF Output: Connect to a digital input on a separate DAC.
Analogue Audio Outputs: Connect these outputs to an analog input on your amplifier (RCA connectors).

Remote Control

The remote control allows for:

Standby On/Off: [Power Button]
Menu Navigation: Use directional buttons, press middle button to select.
Home Menu / Back: Returns to the main menu or previous screen.
Toggle Now Playing Display: Shows current playback information.
Transport Keys: Play/Pause, Skip back/forward.
Volume Control: Adjusts the audio volume.
Mute On/Off: [Mute Button]
Display Bright/Dim/Off: Adjusts the front panel display.

Analogue Audio Connection

Connect the analogue audio outputs (RCA) on the ST25 to the analogue inputs on your amplifier using appropriate cables. Ensure correct L/R channel matching.

Control Connection Setup

This feature synchronizes and controls ARCAM Radia series amplifiers.

Ensure power is disconnected from both units.
Connect an audio cable (analogue or digital) from the ST25 output to an amplifier input.
Connect the control cable from the ST25 CONTROL socket to the ARCAM amplifier's CONTROL socket.
Power on both units.
In the ST25 settings menu, set Volume Mode to EXTERNAL.
Set the Output Type to match the audio connection (Analogue or Digital).
In the ARCAM amplifier's System Settings, set the Streamer Input to match the connected input.

Top Tips for Control Connection

When Volume Mode is set to Variable or External, a Maximum External Volume (default 40) can be set to prevent sudden volume jumps. This can be adjusted in the ST25 menu.

Menu Tree

Menu Option	Description	Default
Audio Output	Selects Analogue or Digital output.	Analogue
Volume Mode	Selects Variable, Fixed, or External volume.	Variable
Maximum External Volume	Defines maximum volume for External Volume mode.	40
DAC Filter	Selects a digital filter for analogue outputs.	Linear Phase Apodizing
Eco Timer	Enables standby after 20 minutes of inactivity.	On
Network Standby	Maintains network connection in standby, increasing consumption.	On
System Reset	Resets all settings to default.
USB Update	Initiates software update from a USB stick.
Product Information	Displays SW versions, IP address, and Network ID.

DAC Filters

The ST25 offers digital filters for the digital-to-analogue conversion process, affecting frequency response, phase, and ringing.

Minimum Phase - Fast roll-off: No pre-ringing, extended post ringing.
Linear Phase Apodizing: Compromise between frequency response and ringing; slight reduction in high frequencies.
Linear Phase Slow Roll-off: Measurable reduction in high frequencies; short, low-level pre and post ringing.
Minimum Phase Slow Roll-off: Similar high-frequency reduction; minimal post ringing.

Troubleshooting

Problem	Check the following
No Sound	Ensure streamer is powered on and correctly connected to amplifier. Verify correct output (Analog/Digital) and amplifier input are selected. Check if the amplifier is muted.
Remote Control Unresponsive	Replace batteries in the remote control. Ensure the remote is pointed at the front panel receiver without obstruction.
Blank Front Panel Display	Check if the display is dimmed to "Off"; press [Power Button] to adjust brightness. Ensure the streamer is powered on and not in standby.
Cannot Control Volume	Check if Fixed volume is enabled. If Digital output is selected, Volume Mode is automatically set to Fixed.
Cannot Discover Streamer in App	Ensure streamer is powered on and connected to the network (wired or Wi-Fi). Verify your smartphone/tablet is on the same network. For Google Cast, accept Google Terms in the ARCAM Radia App.

Trademarks and Licenses

Works with Apple AirPlay. Apple®, AirPlay®, App Store® are trademarks of Apple Inc. Google Cast and YouTube Music are trademarks of Google LLC. Spotify Software is subject to third-party licenses. TIDAL® is a registered trademark of Tidal Music AS. Qobuz is a trademark of Xandrie SA. Roon Ready certification indicates use of Roon streaming technology.

Specifications

Wi-Fi Network: IEEE 802.11 a/b/g/n/ac/ax (2.4GHz/5GHz)
2.4G Wi-Fi: 2400-2483.5 MHz, <20dBm
5G Wi-Fi: Various ranges and power levels, restricted to indoor use in certain regions (see document for details).
BLE: 2400-2483.5 MHz, <10dBm
Mains voltage: 100-120V/220-240V 50/60Hz
Power consumption: 15 W (15W max)
Network standby: <2 W
Eco standby: <0.5 W
Dimensions (W x D x H): 432 x 329 x 99 mm
Weight (net): 5 kg
Weight (packed): 7 kg
Supplied accessories: Mains lead(s), Remote control with batteries, Control Cable, Quick Start Guide, Safety Instructions.

5 GHz Band Restrictions: Certain countries have restrictions on the use of the 5 GHz band. This equipment should be installed and operated with a minimum distance of 20 cm between the product and your body.

Safety Information

Read and keep instructions.
Heed all warnings and follow all instructions.
Clean only with a dry cloth.
Do not block ventilation openings.
Do not install near heat sources.
Protect the power cord.
Use only manufacturer-specified accessories.
Unplug during lightning storms or prolonged periods of non-use.
Refer servicing to qualified personnel.
This apparatus is intended for use with the supplied power cord.
WARNING: Do not expose to rain or moisture. Do not use near water.

Class II Product: This equipment is double insulated and does not require a safety connection to electrical earth.

CAUTION: RISK OF ELECTRIC SHOCK. DO NOT OPEN.

The lightning flash symbol indicates dangerous voltage within the product. The exclamation mark symbol indicates important operating and maintenance instructions.

Visit ARCAM.co.uk for the full Safety Sheet.

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