The Head Unit Processor is a testament to both craftsmanship and control. Its distinctive volume wheel is crafted from 1 kg of gold-plated brass and mounted on precision-machined Swiss bearings. The Head Unit Processor is an in-room statement processor and together with the iconic volume wheel, it is the perfect partner for Steinway & Sons Model O, B, C, and D speaker systems.



Media center for surround sound systems

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.


Decoding: 12 native channels, Dolby Atmos®, Dolby Digital, EX & Plus, Dolby TrueHD, DTS:X, AURO-3D®, 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
EQ: RoomPerfect™, 32 x adjustable voicings holding ≤8 shelving, high/low pass or parametric filters with adjustable gain and Q
Mediaplayer: Internet radio (vTuner), Airplay, Spotify connect, Local file playback, DLNA Support (see formats here), Roon Ready
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: Freestanding
Cooling: Passive / no noise
Dimensions (W x H x D): 440 x 1042 x 396 mm / 17.3 x 40.9 x 15.6 inches
Weight: 57 kg / 125.7 lb