The Head Unit Processor is a testament to both craftsmanship and control. The distinctive volume wheel is crafted from 1 kg of gold-plated brass and mounted on precision-machined Swiss bearings.


The Head Unit is an in-room statement processor based on the advanced Steinway & Sons Model P100 multi-channel processor. Together with the iconic volume wheel, it is the perfect partner for Steinway & Sons Model O, B, C, and D speaker systems


With the built-in media-player, the Head Unit integrates perfectly with streaming audio, and advanced digital processing technologies like RoomPerfect™ ensure optimal performance in all environments.

Now featuring HDMI inputs and outputs, the Head Unit Processor can function as a media center for high-performance stereo systems and surround sound systems (up to 12 native channels). It also supports immersive video formats, including 4K with the new high dynamic range formats.

Fully digital processing, in combination with the Steinway Lyngdorf Digital Link, keeps the audio stream entirely in the digital domain, while maintaining full resolution of the original signal. This means nothing gets between you and your sound.


Surround sound processor
12 native channels, 256 speakers output channels, Dolby Atmos®, Dolby Digital, EX & Plus, Dolby TrueHD, DTS:X, DTS ES Discrete 6.1, DTS ES Matrix 6.1, DTS 96/24, DTS-HD High Res. Audio, DTS-HD Master Audio
Post processing:
Dolby surround, AURO-MATIC®, DTS Neural:X, DTS NEO:X
Audio inputs:
3 x HDMI™ (≤192kHz/24bit), 3 x S/P-DIF coaxial inputs (≤192kHz/24bit), 4 x S/P-DIF optical inputs (≤96Hz/24bit), 1 x USB audio input (≤192/24bit), 1 x microphone input (XLR) for RoomPerfect™ calibration
Audio outputs:
1 x S/P-DIF coaxial digital output (fixed 96kHz/24bit), 1 x RCA analog output
Audio specifications:
Frequency response: ±0,5dB from 20 to 20,000 Hz, total harmonic distortion: 0.005% max from 20 to 20,000 Hz
Interface options:
RS232, Ip, Web interface, Ihiji, Remote Control App on iOS and Android platforms
RoomPerfect™, 32 x adjustable voicings holding ≤8 shelving, high/low pass or parametric filters with adjustable gain and Q
Internet radio (vTuner), Airplay, Spotify connect, Local file playback, DLNA Support (see formats below), (RoonReady support pending)
Video inputs:
3 x HDMI™ (2.0 – HDCP 2.2), accepts 3D, 4K U-HD & HDR10
Video outputs:
1 x HDMI™ (2.0 – HDCP 2.2)
Video scaling:
Upscaling of all video to 4K ultra high definition, no downscaling of 4K video
Control interfaces:
1 x DB9 RS232 connector, 2 x IR sensor inputs, 1 x IR output (loop from one of the sensor inputs), 1 x trigger input, 4 x trigger outputs, 1 x RJ45 ethernet LAN connector, 2 x USB connectors, 1 x SD card slot, (Backup – storage for system software and settings)
Accessories included:
RoomPerfect™ microphone, Microphone stand, Microphone cable
Optional upgrade:
Iconic RF remote
Placement options:
Passive / no noise
Dimensions (W x H x D):
440 x 325 x 172 mm / 17.3 x 12.8 x 6.8 inches
58 kg / 127 lb
Black piano finish, custom finishes available


SL Audio A/S
Ulvevej 28
7800 Skive Denmark
+45 9614 5600

© 2017 SL Audio A/S