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The Caspian 4G Power Amplifier is the “pure power” unit in the new Caspian 4G Series—engineered to deliver drive, control and authority without sacrificing transparency or micro-detail. It can run in stereo or be configured in mono-bridged mode for more demanding systems, and it’s designed to form a maximum-performance pairing with the Caspian 4G Streaming Pre-Amplifier.
Euphoria amplification (Class AB) with an optimised analogue signal path for a fast, clean sound and effortless dynamics.
Real, scalable power:
105 W/8 Ω and 200 W/4 Ω (stereo)
420 W/8 Ω and 630 W/4 Ω (mono bridged)
Audiophile-grade current delivery: built around an oversized power supply (500 VA toroidal transformer and 40,000 µF of filtering) to sustain dynamics and control into difficult loads.
RCA and XLR inputs, with a “fully balanced” philosophy when paired with the matching preamp to maximise separation and background cleanliness.
MaestroUnite control and configuration (including advanced settings and OTA updates within the Monitor Audio Group ecosystem).
Sound and in-room behaviour (a separates approach, not an integrated)
The intent behind Caspian 4G is clear: a preamp + power amp combination that doesn’t run out of steam and avoids a sense of compression when dynamic demands rise. The Euphoria architecture and added headroom are highlighted as helping reduce the risk of clipping in complex passages, while maintaining control and cleanliness.
Design and everyday use
The series favours a restrained look with a front OLED display and a user-friendly interface, plus app-based control integration. There’s also emphasis on visual/functional coherence across the range (lighting and family consistency) and a “user-centred design” approach.
The ideal partner: Caspian 4G Streaming Pre-Amplifier
If your goal is a complete system, the natural match for this power amp is the Streaming Pre-Amplifier: it integrates BluOS for multiroom streaming and app control, plus physical inputs geared toward TV and digital/analogue sources (for example HDMI eARC, optical/coaxial, USB, and line inputs). Roksan positions the combo as a performance-focused duo.
Power output: 105 W/8 Ω; 200 W/4 Ω (stereo)
Mono-bridged power: 420 W/8 Ω; 630 W/4 Ω
Bandwidth: 70 kHz (-3 dB)
Power supply: 500 VA toroidal transformer; 40,000 µF
Dimensions (H × W × D): 93 × 432 × 378 mm
Weight: 14.9 kg
