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Roksan Caspian 4G Streaming Amplifier 

The Caspian Streaming Amplifier unleashes the power of BluOS, premium multi-room high-resolution wireless streaming through the smart implementation of Euphoria, Caspian’s powerful twin-independent amplification architecture, the revolutionary Rapture DAC technology, for improved digital to analogue signal conversion, and an advanced pre-amplifier and phono stage. All from a sleek aluminium design that exudes quality.

Features at a glance:
BluOS  |  HDMI eARC  |  MQA  |  Bluetooth aptX  |  AirPlay 2  |  Moving Magnet Phono Stage  |  Euphoria Amplification  |  Rapture DAC Technology  |  RCA, XLR and Subwoofer Outputs  |  MaestroUnite Setup & Control App

For today’s connected consumer and music lover – glorious high-fidelity
Configured and controlled using the intuitive MaestroUnite app, the Caspian Streaming Amplifier delivers extraordinary levels of detailed, high-fidelity sound. Designed for the user.

MaestroUnite – All from a single app
Unify your system and discover a deeper connection to Roksan and Monitor Audio.

The Roksan and Monitor Audio ‘MaestroUnite’ App revolutionises system setup and audio control, offering consumers a seamless and intuitive way to manage and enhance their high-fidelity audio systems.
This innovative app enables users to effortlessly explore advanced configurations, customise audio preferences, support Over-The-Air (OTA) updates and build an augmented eco-system of supported Monitor Audio Group products.
MaestroUnite is a user-friendly interface with robust functionality making it an essential tool for anyone seeking to elevate their home audio experience. Listen Again.

Made and designed for the user
Caspian Series 4G’s electronics architecture is something really very special. It benefits from an advanced feature set, that ensures all use-cases are being delivered upon. Its flexibility, usability and powerful musical delivery are built into our innovative ‘digital first’ DNA and physical design.

BluOS enabled, premium streaming up to 24-bit/192kHz?
The built-in BluOS premium multi-room audio technology in the Caspian Streaming Amplifier supports can stream up to 64 zones, all controllable via your smart phone.
BluOS supports the world’s most popular streaming services, so you can enjoy unlimited music and podcasts at your fingertips. With the Caspian Streaming Amplifier, users can enjoy a fully immersive whole-home enhanced listening experience in true high-fidelity. ?

Caspian 4G Remote Control? — Total performance at your fingertips
Both the Caspian Streaming Amplifier and Integrated Amplifier come with an elegant and practical Roksan remote control to help users operate their device with ease.
Beautifully designed, its ergonomic, aluminium extruded design is perfectly weighted to sit comfortably in the hand. The buttons are clear and intuitive to use, helping the user navigate through the inputs and directly set pre-sets, as well as a host of standard operational features.

One of the photos, shows the Caspian 4G Streaming Amplifier with the Caspian 4G Power Amplifier, due in 2025.

Specifications

Connectivity Summary
Analogue Inputs    2x RCA Stereo (A1, A2)
1x Balanced XLR (A3)
Digital Inputs    2x Coax (D1, D2)
2x Optical (D3, D4)
Bluetooth Audio
BluOS
HDMI eARC
Analogue Outputs    1x Balanced XLR (Pre1)
1x RCA Stereo (Pre2)
1x RCA Stereo (Pre3)
Amplifier Output    1x Pair of Speaker binding posts (L&R)
Other Inputs / Outputs    Gigabit Ethernet RJ45, W-Fi 5, Wi-Fi 4, BLE, 12V Trigger, Wired IR
Power    IEC C14, Fused 6.2AT

User Interface
Primary Interface (on unit)    Dynamic Control Dial (with haptic feedback) to control volume, inputs & power
Secondary Interface (on unit)    Backward, Play/Pause, Forward
Remote Control    Black, 15 button IR remote. Bead blasted & anodised aluminium extruded case with laser etched logo

Power Amplifier
Power Amplifier Technology    Dual Mono Euphoria Amplifier
Amplifier Class    AB
Output Power, 8 0hms (235VAC @ 1% THD, both channels driven)    105W
Output Power, 4 0hms (235VAC @ 1% THD, both channels driven)    200W
THD+N (1W @ 1kHz Both Channels driven)    <0.007%
Gain    29dB
Signal to Noise (1W/8R 2Vrms A1, both channels driven)    >85dB
Gain Matching    <0.5dB
Frequency Linearity (20Hz - 20kHz)    +-0.25dB
Power Supply    600VA / 36,400uF per Rail

Phono
Inputs    MM
Gain MM    53dB
Gain Adjustment MM    Low (-6dB), Mid (0dB default), High (+6dB)
Input Impedance MM    47k ohms/100pF
Gain MC    73dB
Gain Adjustment MC    Low (-6dB), Mid (0dB default), High (+6dB)
Input Impedance MC    100 ohms/470pF
RIAA response accuracy MM/MC    +-0.3dB 20Hz - 20kHz

Rapture DAC
DAC Technology    Rapture DAC, Dual Mono Balanced
Format Support    PCM
Sampling Rate    up to 24bit / 192kHz

Pre-Amplifier (Amp, Pre1, Pre2)
Volume Control Technology    Hybrid Digital Analogue
Volume Control Matching    <0.25dB
THD+N (3.9Vrms, A-Weighted)    <0.0008%
Signal to Noise Ratio (3.9Vrms, A-Weighted)    >108dB
Maximum Output Level    3.9Vrms
Supported Features    Pre-Output, Line Level Output (Fixed Level), Sub-Woofer Output (Low-Pass Filtered), Intelligent DS

Pre-Amplifier (Pre3)
Volume Control Technology    Digital
Volume Control Matching    <0.25dB
THD+N (3.9Vrms, A-Weighted)    <0.003%
Signal to Noise Ratio (3.9Vrms, A-Weighted)    >108dB
Maximum Output Level    3.9Vrms
Supported Features    Pre-Output, Line Level Output (Fixed Level), Sub-Woofer Output (Low-Pass Filtered), Intelligent DSP

Bluetooth
Protocol    A2DP Audio Profile
Codecs    SBC, aptX & AAC
Range    >15m

Digital Inputs
Coax Inputs (D1, D2)    up to 24bit / 192kHz (Stereo)
Optical Inputs (D3, D4)    up to 24bit / 192kHz (Stereo)
HDMI ARC & eARC    Yes (2.0)

Analogue Inputs
Maximum Input Level    6.7Vrms
Music Sense    A2 Input
AV Mode    A2 Input

BluOS Section
BluOS Streaming Supported    Yes
Audio Formats    MP3, AAC, WMA, OGG, WMA-L ALAC, OPUS
Hi-Resolution Audio Formats    MQA, FLAC, WAV AIFF, Supports converted DSD playback via the desktop app only
Sampling Rate    up to 192kHz
Bit Depth    16 - 24
Network Connectivity    “Gigabit Ethernet RJ45, W-Fi 5”
Supported Network File Storage Protocol    Server Message Block (SMB)
USB    1x Type-A port for connection to USB memory stick (FAT32 or NTFS formatted) and supported peripherals
Supported Operating System    Music playback from network shares on the following desktop operating systems: Microsoft Windows XP, 2000, Vista, 7, 8 to current Windows Operating Systems and macOS versions**
Mobile Application    Free BluOS Controller App available for download from the respective App stores of Apple iOS devices (iPad, iPhone and iPod), Android devices, Kindle Fire and Windows or macOS desktops
Supported music services and partners    Over 20 natively integrated streaming services. For more information go to https://bluos.io/
Third Party Certified Services    Apple Airplay, Spotify Connect, Tidal Connect
ROON Ready    TBC
Control Integrations    Creston, Control4 (OS3), Control4 (OS2), RTI, URC, BluOS URC Driver, URC, Lutron, NICE, GIRA, BluOS Integration Utility, BluOS Custom Integration API

Maestrounite
Maestrounite Supported    Yes
Network Connectivity    Bluetooth LE Wi-Fi 4 (Only connects for Over-the-Air Updates)
Mobile Application    iOS, Android
Over-the-Air Updates    Firmware Updates are available via the Maestrounite configured Wi-Fi connection. This can be setup to connect & update on user request or during periods of inactivity

Other
Wired IR Input    5 - 14V, Mono 3.5mm jack plug, any polarity
12V Trigger Input    5 - 14V, 3.5mm jack dual polarity (On / Standby)
12V Trigger Passthrough    3.5mm jack Pass through from input only
Nominal Mains Voltage    Auto-Selecting Power Supply, 100-120VAC & 220-240 VAC
Power Consumption    Max 610VA, Standby 0.5W, Network Standby 2W (Standby Plus, allows fast boot)

Mechanical
Construction    Extruded and machined Aluminium front & top cover with extruded Aluminium heatsinks
External Dimensions with all accessories fitted (H x W x D)    93mm x 432mm x 378mm
Weight    15.5 kg