Following the late-2024 launch of the Caspian 4G Integrated and Streaming Amplifiers, Roksan is wasting no time in 2026 by expanding the range with the Caspian 4G Streaming Pre-Amplifier and Power Amplifier. The logic is classic hi-fi and refreshingly unglamorous: separate the low-level signal work from the high-current muscle to reduce noise, interference, and stress on the circuitry. Roksan isn’t walking back the integrated or streaming amps—they remain smart, space-efficient solutions—but the new separates are aimed at listeners who want that last layer of control and polish without turning the rack into a science experiment.
Add the fact that Roksan quietly marked its 40th anniversary in 2025, and the message is hard to miss: this isn’t a nostalgia play or a badge-polishing exercise. It’s Roksan planting a flag in a brutally competitive segment dominated by Naim, Cambridge Audio, and NAD—and making it clear they didn’t come to 2026 to reminisce. They came to take shelf space.
Caspian 4G Streaming Pre-Amplifier
The Caspian 4G Streaming Pre-Amplifier is the nerve center of the system—the part that actually thinks. It handles all input selection and switching, digital processing and DAC duties, built-in streaming, and then hands off a clean, fully sorted signal to an external power amplifier.
In other words, this is where the serious work happens before the watts get involved. Roksan keeps the brains and the brawn in separate rooms here, which is the whole point: fewer compromises, less electrical cross-talk, and a calmer, more controlled signal before it ever sees a speaker.
Rapture DAC Technology
The Caspian Series 4G Streaming Preamplifier uses Roksan’s Rapture DAC design, based on a differential current-conveyor topology rather than a conventional op-amp output stage. This approach offers higher gain-bandwidth performance, which is beneficial for handling high-resolution digital signals with greater stability and accuracy. By avoiding reliance on standard op-amp ICs, the design focuses on consistent signal transfer and precise digital-to-analog conversion without adding unnecessary complexity.
Analog Pre-Amplifier and Phono Stage
The Caspian Series 4G Streaming Preamplifier includes a fully analog preamp section designed to preserve signal integrity across connected sources. Its balanced architecture helps reduce noise, while a ground-switching input design minimizes cross-talk between components. This approach builds on circuit concepts previously used in Roksan’s Attessa series. The preamp also includes a phono input compatible with both moving-magnet and moving-coil cartridges.
In addition to its analog capabilities, the Caspian 4G Streaming Preamp features HDMI-ARC/eARC, allowing straightforward connection to a compatible TV or projector for improved audio performance with television, movie, and gaming content.
BluOS Streaming Platform
The Caspian 4G Streaming Preamp integrates the BluOS multi-room streaming platform, providing access to networked and online music playback within a single control environment. BluOS supports high-resolution streaming up to 24-bit/192kHz and can operate across multiple zones within a BluOS-enabled system. The platform allows browsing and playback of locally stored music libraries alongside supported streaming services and internet radio.
In addition, the Caspian 4G Streaming Preamp is compatible with Roon, allowing it to function as a Roon-ready endpoint for users who prefer Roon’s library management and playback ecosystem.
Volume Control
Rather than choosing sides in the digital-versus-analog volume control debate, Roksan uses a hybrid approach in the Caspian Series 4G. By combining elements of both methods, the design allows for fine volume adjustment while maintaining consistent signal handling across the range. The result is precise, repeatable level control without relying solely on either a fully digital or fully analog implementation.
Caspian 4G Power Amplifier
The Roksan Caspian 4G Streaming Preamp handles source connectivity, switching, and digital-to-analog conversion, but it does not include onboard amplification. To drive loudspeakers, a dedicated power amplifier is required—and that role is filled by the new Caspian 4G Power Amplifier. Designed to partner directly with the Streaming Preamp, the Caspian 4G Power Amplifier is built to provide the necessary output and control, whether configured for conventional stereo operation or used as a mono-block in higher-power systems.
The Caspian Series 4G Power Amplifier is based on Roksan’s Class A/B Euphoria amplifier architecture, which is designed around more than just achieving low harmonic distortion or an ultra-quiet noise floor. In the Series 4G implementation, the focus extends to controlling intermodulation distortion and maintaining consistent harmonic and intermodulation behavior across varying frequencies and speaker loads. The goal is stable, predictable performance under real-world operating conditions.
In terms of output, the Caspian Series 4G Power Amplifier delivers 105 watts per channel into 8 ohms and 200 watts per channel into 4 ohms in stereo operation. It can also be configured in bridged mono mode, where it is rated at 420 watts into 8 ohms and 630 watts into 4 ohms. Connectivity includes two sets of RCA inputs and one set of balanced XLR inputs, along with dual speaker terminals for straightforward connection to a preamplifier and loudspeakers.
MaestroUnite App
Additional setup, control, and feature management for both the Caspian 4G Streaming Preamp and Power Amplifier is handled through the MaestroUnite app. The app provides access to system configuration options including input setup, headphone sensitivity, analog input gain, balance adjustment, low-power standby behavior, and general audio preferences.
It also supports over-the-air (OTA) firmware updates, allowing features and performance refinements to be deployed without hardware changes. MaestroUnite is integrated within the broader Monitor Audio Group ecosystem, enabling coordinated control across compatible products.
Caspian 4G Remote Control
The Caspian 4G Streaming Pre-Amplifier and Power Amplifier include a supplied Roksan remote control for access to core system functions. The remote is designed to handle basic operation of Caspian 4G components without relying on an app for everyday use. Its aluminum extruded construction is shaped for comfortable handling, with clearly labeled and logically arranged buttons for straightforward operation.
Comparison
| Model | Caspian Integrated Amplifier | Caspian Streaming Amplifier | Caspian Power Amplifier | Caspian Streaming Pre-Amplifier |
| MSRP | $6,000 | $7,250 | $3,750 | $4,500 |
| Analogue Inputs | 2x RCA Stereo (A1, A2), 1x Balanced XLR (A3) | 2x RCA Stereo (A1, A2), 1x Balanced XLR (A3) | 2x RCA Stereo (A1, A2), 1x Balanced XLR (A3) | 2x RCA Stereo (A2, A3) 1x Balanced XLR (A1), 1x MM Phono (MM), 1x MC Phono (MC) |
| Digital Inputs | 2x Coax (D1, D2) 2x Optical (D3, D4) Bluetooth Audio | 2x Coax (D1, D2) 2x Optical (D3, D4) Bluetooth Audio BluOS HDMI eARC | – | 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) | 1x Balanced XLR (Pre1), 1x RCA Stereo (Pre2), 1x RCA Stereo (Pre3) | 2x RCA Stereo (Line 1,2) | 1x Balanced XLR (Pre1), 1x RCA Stereo (Pre2), 1x RCA Stereo (Pre3) |
| Amplifier Output | 1x Pair of Speaker binding posts (L&R) | 1x Pair of Speaker binding posts (L&R) | 1x Pair of Speaker binding posts (L&R) | – |
| Other Inputs / Outputs | Wi-Fi 4, BLE, 12V Trigger, Wired IR | Gigabit Ethernet RJ45, W-Fi 5, Wi-Fi 4, BLE, 12V Trigger, Wired IR | Wi-Fi 4, BLE, 12V Trigger, Wired IR | Gigabit Ethernet RJ45, W-Fi 5, Wi-Fi 4, BLE, 12V Trigger, Wired IR |
| Power | IEC C14, Fused 6.2AT | IEC C14, Fused 6.2AT | IEC C14, Fused 6.3AT – 250V | IEC C14, Fused 6.3AT – 250V |
| Primary Interface (on unit) | Dynamic Control Dial (with haptic feedback) to control volume, inputs & power | Dynamic Control Dial (with haptic feedback) to control volume, inputs & power | Power Button – on/standby | Dynamic Control Dial (with haptic feedback) to control volume, inputs & power |
| Secondary Interface (on unit) | — | Backward, Play/Pause, Forward | – | Backward, Play/Pause, Forward |
| Remote Control | Black, 15 button IR remote. Bead blasted & anodised aluminium extruded case with laser etched logo. | Black, 15 button IR remote. Bead blasted & anodised aluminium extruded case with laser etched logo. | Maestro Unite App | Black, 15 button IR remote. Bead blasted & anodised aluminium extruded case with laser etched logo. |
| Power Amplifier Technology | Dual Mono Euphoria Amplifier Stereo Configuration | Dual Mono Euphoria Amplifier Stereo Configuration | Dual Mono Euphoria Amplifier Mono-Bridge Capable | – |
| Amplifier Class | AB | AB | AB | – |
| Output Power, 8 0hms (235VAC @ 1% THD,both channels driven) | 105W | 105W | 105W | – |
| Output Power, 4 0hms (235VAC @ 1% THD,both channels driven) | 200W | 200W | 200W | – |
| THD+N (1W @ 1kHz Both Channels driven) | <0.007% | <0.007% | <0.007% | – |
| Gain | 29dB | 29dB | 29dB | – |
| Signal to Noise (1W/8R 2Vrms A1, both chan- nels driven) – Stereo | >85dB | >85dB | >85dB | – |
| Output Power, 8 Ohms (235VAC @ 1% THD) -Mono-Bridged | – | – | 420W | – |
| Output Power, 4 Ohms (235VAC @ 1% THD) -Mono-Bridged | – | – | 630W | – |
| Frequency Linearity (20Hz – 20kHz) | +-0.25dB | +-0.25dB | +-0.25dB | – |
| Power Supply | 600VA / 36,400uF per Rail | 600VA / 36,400uF per Rail | 600VA / 36,400uF per Rail | – |
| Inputs | MM | MM | – | MM& MC |
| Gain MM | 53dB | 53dB | – | 53dB |
| Gain Adjustment MM | Low (-6dB), Mid (0dB default), High (+6dB) | Low (-6dB), Mid (0dB default), High (+6dB) | – | Low (-6dB), Mid (0dB default), High (+6dB) |
| Input Impedance MM | 47k ohms/100pF | 47k ohms/100pF | – | 47k ohms/100pF |
| DAC Technology | Rapture DAC, Dual Mono Balanced | Rapture DAC, Dual Mono Balanced | – | Rapture DAC, Dual Mono Balanced |
| Format Support | PCM | PCM | – | PCM |
| Sampling Rate | up to 24bit / 192kHz | up to 24bit / 192kHz | – | up to 24bit / 192kHz |
| Volume Control Technology | Hybrid Digital Analogue | Hybrid Digital Analogue | – | Hybrid Digital Analogue |
| BluOS Streaming Supported | – | Yes | – | Yes |
| Weight | 15.2 kg (33 lb 8 oz) | 15.5 kg (34 lb 3 oz) | 14.9 kg (32 lb 14 oz) | 10.1 kg (22 lb 4 oz) |
The Bottom Line
The Caspian 4G Streaming Pre-Amplifier and Power Amplifier are aimed squarely at listeners who prefer proper separates and are willing to pay for a more modular, system-first approach. The key technologies—BluOS streaming, Roksan’s Rapture DAC architecture, a hybrid volume control, and the Class A/B Euphoria power stage with stereo or mono-block flexibility position the Caspian 4G stack as a technically serious alternative to all-in-one amplifiers. This is not about chasing minimum box count; it’s about control, upgrade paths, and system matching.
Pricing is unapologetic. At $4,500 for the Streaming Pre-Amp and $3,750 for the Power Amp, the Caspian 4G separates cost more than value-driven options like Emotiva’s Differential Reference Design Stack, but they land closer to established players from NAD and still undercut comparable systems from Naim’s Classic 300 Series. For buyers already shopping in this tier—and comparing BluOS-based ecosystems, build quality, and long-term platform support, Roksan’s Caspian 4G separates make a credible case. They’re not trying to win on price; they’re betting that refinement, flexibility, and engineering consistency will be enough to keep audiophiles paying attention.
Price & Availability and Pricing
Roksan products are available via authorized Roksan retail and online dealers
- Roksan Caspian 4G Streaming Pre-Amplifier – $4,500 (£3,500 | €4,000)
- Roksan Caspian 4G Power Amplifier – $3,750 (£3,000 | €3,500)
Related Reading:
- Roksan Attessa Range Delivers Premium Streaming Technology
- Monitor Audio Unveils Creator Series In-Wall “Large” Speakers and Mount Boxes at CEDIA 2025
- Monitor Audio Bronze Series 7G Aims to Redefine “Entry-Level” Without Draining Your Wallet
- Cambridge Audio’s EXN100 Streamer and EXA100 Integrated Amp Slot In Between CX and Edge Series
