“All-in-one” preamp + streamer (Caspian 4G Series): DAC + analog/digital source control.
BluOS: streaming/multiroom up to 24/192 + app control
HDMI eARC for TV + coaxial (24/192) and optical (24/96) inputs
Integrated MM/MC phono with gain/load adjustments for turntables
RCA and XLR outputs + subwoofer output; Bluetooth aptX
MaestroUnite for configuration and OTA updates
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ROKSAN Caspian 4G Streaming Pre-Amplifier
The Caspian 4G Streaming Pre-Amplifier is a high-fidelity preamplifier with an integrated streamer, designed to be the true system control center: it manages analogue and digital sources, includes a DAC, BluOS streaming, and a comprehensive set of outputs (RCA, XLR and subwoofer), following the new Caspian 4G Series “digital-first” philosophy.
Key product highlights
BluOS streaming with Hi-Res audio up to 24-bit/192 kHz, multiroom support and mobile control.
HDMI eARC for seamless TV integration.
“Rapture” DAC and MaestroUnite control (setup, preferences, OTA updates and Monitor Audio Group ecosystem).
Built-in MM and MC phono stage, ready for demanding turntables.
Bluetooth with aptX (plus SBC/AAC depending on configuration) for quick listening from a phone.
Streaming & control: BluOS + MaestroUnite
The Caspian 4G Streaming Pre-Amplifier integrates BluOS, a premium platform that enables high-resolution playback and multiroom operation, controlled from your smartphone. It is also compatible with a broad playback ecosystem (including Roon integration depending on implementation/certification) and is clearly aimed at modern use cases: streaming, TV, local libraries and home networks.
For initial setup and system management, MaestroUnite centralises configuration, audio preferences, presets and OTA updates, unifying control of the whole system.
Complete connectivity: analogue, digital and TV
Beyond streaming, the preamp offers extensive connectivity to cover virtually any scenario:
Digital + TV inputs
HDMI ARC/eARC (HDMI 2.0) for TV audio.
Coaxial and optical inputs (with different sample-rate limits: coaxial up to 24/192, optical up to 24/96).
USB and network (Ethernet/Wi-Fi) for playback and control in a home environment.
Analogue inputs (including vinyl)
MM + MC phono stage with gain and loading adjustments to fine-tune cartridge matching.
RCA line inputs and balanced XLR inputs for higher-end analogue sources.
Outputs
RCA and XLR outputs, plus a subwoofer output, designed to feed power amps, active speakers, or integrate a sub into a stereo/AV system without sacrificing musicality.
MM/MC phono stage: settings to “dial in” your cartridge
One of the strengths of the Caspian 4G Streaming Pre-Amplifier is that it doesn’t treat vinyl as an “extra” source: it includes a proper MM/MC phono stage with selectable gain/loading parameters, optimising everything from medium-output cartridges to more delicate moving coils.
Technical specifications
Streaming: BluOS playback up to 24-bit/192 kHz.
Bluetooth: SBC/AAC/aptX compatibility (depending on mode/implementation).
Digital inputs: coaxial (up to 24/192) and optical (up to 24/96); HDMI ARC/eARC.
Dimensions (with accessories): 93 × 432 × 378 mm
Weight: 10.1 kg
