Silent Angel Bremen SL1 Plus
The Silent Angel Bremen SL1 Plus pairs rich, relaxed streaming with secure rhythmic flow, spacious tonal colour and controlled bass. The Ear found its warm, textured balance especially easy to enjoy, while balanced and single-ended analogue outputs, digital connections and preamp capability make it a remarkably flexible streamer hub. Its solid metal construction further reinforces the premium feel.
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Nicely Roasted
Sound Quality
90/100
Build Quality
92/100
Features Usability
86/100
Value for Money
88/100
Pros
Rich, warmly balanced and textured sound with natural musical flow, strong timing and controlled bass.
Extensive connectivity, including XLR, RCA, coaxial, optical and USB outputs, plus preamp functionality for active-speaker systems.
Remarkably solid, well-engineered metal build that feels more expensive than its price.
Cons
Not as transparent or insight-rich as the Arcam Radia ST25 used as a comparison reference.
Display-free operation and a merely functional-looking app may not suit listeners who want a polished visual interface.
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What Reviewers Are Saying
SOUND QUALITY PERFORMANCE 90/100
The Bremen SL1 Plus is described as smooth, textured and musically fluent rather than overtly forensic. It brings convincing space, tonal colour, controlled bass and secure timing, though it is not quite as transparent or insight-rich as the Arcam Radia ST25 used for comparison.
Overall Sound
91/100
The Ear found a comfortable, richly textured presentation with a hint of warmth, strong vocal reproduction and an easy, natural sense of musical flow. Space, tonal shading and bass are all praised, while the reviewer notes that ultimate transparency and resolution fall slightly behind the Arcam Radia ST25.
Digital Signal Integrity
88/100
The SL1 Plus retains a firm grip on timing and rhythmic detail, even on slower material where instability would be more apparent. Compared with the Arcam, it gives up some pristine clarity and depth of insight, but remains revealing, rich and composed.
FEATURES USABILITY PERFORMANCE 86/100
The SL1 Plus offers broad streaming support and unusually comprehensive analogue and digital connectivity for a compact streamer/preamp. Its display-free design keeps the front panel clean, but operation and preamp control rely on the app.
Streaming Software
83/100
Qobuz, Tidal Connect, Spotify Connect, DLNA, internet radio and embedded MQA give the SL1 Plus a useful spread of streaming options. The review confirms that preamp functions are accessed through the app, but offers little detail on the VitOS Orbiter app's interface, stability or library handling.
Features Connectivity
93/100
Connectivity is a major strength: wired Ethernet and Wi-Fi are joined by balanced XLR and RCA outputs, plus coaxial, optical and USB audio digital outputs. The ability to act as a preamp hub for active or powered speakers adds meaningful system flexibility.
Assessments of Build Quality, Usability, and Overall Propositions.
Build Quality
92/100
The Ear calls the build and finish hard to fault, describing the unit as remarkably solid and well engineered for its price. Its galvanised-steel chassis, aluminium fascia and polished aluminium base contribute to a product that feels more expensive than it is.
Value for Money
88/100
At under £1,000, The Ear considers it remarkably solid and well engineered, with a feel beyond its asking price. In comparison with the Arcam Radia ST25, it concedes a little transparency and insight but still delivers a highly capable, musically satisfying performance with notably broader connection options.
Reviews & Sources
Professional reviews and sources for this product's Watt'n Potatoes analysis.
Online Reviews & Mentions
YouTube Reviews
Forum Mentions
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Specifications
- Color
- Black
- Power Input
- IEC power socket (AC)
- Control App
- VitOS Orbite
- Connections
- ① Wired (Gigabit Ethernet) ② Wi-Fi
- Outputs
- TOSLINK Optical (192KHz/24bits), Coaxial, USB Audio
- Analog Outputs
- XLR balanced, RCA unbalanced
- USB Ports
- USB 2.0 x 1, USB 3.0 x 2
- SA-LINK Port
- Available to connected AU and AUH devices, controlled via SA-Link.
- Reset Button
- Wi-Fi connection mode. Press and hold for 5 seconds to reset the Wi-Fi settings to default.
- Memory
- Low-noise 4GB
- System storage
- 32GB High-speed flash storage
- Processor (CPU)
- Dual-core Cortex-72 at 1.8GHz + Quad-core Cortex-A53 at 1.4GHz
- SSD Expansion
- M.2 NVMe SSD (22*80mm), up to 4TB (not included)
- Chassis
- Galvanized steel with an aluminum front panel
- Temperature
- Operating: 32 ~ 86 °F (0 ~ 30 °C) Storage: -4 ~ 158 °F (-20 ~ 70 °C)
- Humidity
- Operating: 10% ~ 90% RH (non-condensing) Storage: 5% ~ 95% RH (non-condensing)
- Dimension
- 439(W) x 50(H) x 250(D) mm (excluding antennas)
Manufacturer's Description — Silent Angel
Stream Freely, Stay Active, Rediscover Wireless HiFi
Silent Angel SL1 Plus builds on the success of B1 and B2, establishing the Bremen series as a benchmark for Hi-Fi streaming with exceptional media processing, sound quality, and compatibility. Designed for active music enthusiasts, the SL1 Plus combines affordability with seamless Wi-Fi streaming and decoding, delivering uncompromised audio quality for an effortless Hi-Fi experience.
Easy to Connect, Just Hit Play
Effortless Cost, Complete Experience
Lossless Music at Fingertips
Exclusive Innovative for All New Wireless Listening Experience
Flexible Connectivity Lossless Music
Wi-Fi and wired Connectivity for low latency, anti-interference listening
Versatile High-Resolution Format
Support A Large Number of High-Resolution Audio Formats for Digital AudiophilesHi-Res Streaming Platform Compatibility
Compatible with Most of the Major Streaming PlatformsHighest Fidelity Analog Performance
Delivers Authentic and Natural Music ReproductionAdvanced High-Frequency Filters
Effectively Reduce Noise for Unmatched Audio QualitySeamless Operating Experience
Audio-Grade OS For interference-free playbackWireless Streaming for a Versatile and Premium Listening Experience
Best Match for Amplifiers and Powered Speakers, With XLR balanced, RCA (single-ended), coaxial, optical, and USB audio outputs, Bremen SL1 Plus offers unmatched versatility. Easily connect to your amplifiers or powered speakers and enjoy CD-quality sound. Eliminate Bluetooth interference for better speaker performance and experience low-jitter, true Hi-Fi streaming. Integrate SL1 Plus to elevate streaming to high-end, lossless quality.
Flexible Connectivity for a Lossless Music Experience, The Bremen SL1 Plus ensures stable, jitter-free music streaming with wired and Wi-Fi connections. Minimizing latency delivers instant audio transmission for a seamless listening experience. Wired connections offer superior resistance to interference, preserving lossless audio within your network. Enjoy high-quality sound without the degradation commonly found with Bluetooth transmissions.
Advanced Wireless Streaming Player Engineering
Proprietary Audio Circuit Preserving Pristine Audio Fidelity
The SL1 Plus incorporates a low-power, HiFi-grade board with a six-core CPU and the VitOS operating system, perfectly integrating hardware and software for unmatched sound quality. A thick copper layer on the core board and SSD section ensures efficient heat dissipation, delivering stability, rapid cooling, and minimized interference. Advanced EMI shielding further reduces electromagnetic interference, guaranteeing a pure and immersive listening experience.
Separate DAC Board for Best Analog Output
Dedicated DAC board is housed within an aluminum enclosure to minimize power and digital circuit module interference. This design effectively separates analog and digital circuits, ensuring a cleaner and more precise sound output.
Custom Radar-Grade Switching Power Supply
The SL1 Plus incorporates a custom radar-grade switching power supply that guarantees stable, low-noise performance, essential for pristine audio playback.
Abundant Streaming Music Services.
Leading Music Streaming Platforms Embedded, Offering MQA Audio Decoding and Seamless Access to High-Quality Online Music Content through Various Sources Including Qobuz, Spotify Connect, DLNA, Airplay2 and Internet Radio.
Mobile App, VitOS Orbiter
Our robust and intuitive Streaming Platform enables users to easily locate and set up a new device, browse and stream music. Listen to all your favorite songs with details displayed including bit rate, sample rate, bit depth and format (e.g. DSD, WAV or FLAC).
Verified Dealers
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Authorized dealers for Silent Angel Bremen SL1 Plus
- The Audio Association — in-store — Anaheim, California, United States (website)
- à la carte productions — in-store — Palm Coast, Florida, United States (website)
- Absolute Hi End — in-store — Ormond, Victoria, Australia (website)
- All Elite Audio — online and in-store — Perry Hall, Maryland, United States (website)
- Alpha High End — online and in-store — Brasschaat, Vlaams Gewest, Belgium (website)
- ARK Audio — online and in-store — Borensberg, Östergötlands län, Sweden (website)
- Art & Voice — online (website)
- Art Sonique — France (website)
- Audio 46 — online and in-store — New York, New York, United States (website)
- Audio Absolute — in-store — Tambon Bang Khun Kong, Chang Wat Nonthaburi, Thailand (website)
and 81 more verified dealers
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