Fully Discrete Fully Balanced Dual DAC Architecture
Incorporates 320 ultra-precision thin-film resistors rated at 0.1% (1/1000) accuracy.
Discrete R-2R PCM DAC is built with 192 pieces of 0.1% high-precision thin-film resistors in a balanced 24-bit DAC configuration, supporting native PCM decoding up to 384kHz.
Discrete 1-Bit DSD DAC is built with 128 pieces of 0.1% high-precision thin-film resistors in a balanced 1-bit DAC architecture, supporting native DSD256 decoding.
Dual Digital Audio Processor: Equipped with powerful algorithmic processing, the R202
supports decoding up to PCM 768kHz and DSD512, with sample rate and format
conversion.
Triple Decoding Modes: Auto, R-2R and 1-Bit
Auto Mode – Intelligent Format Matching. In Auto Mode, the system intelligently
selects the optimal DAC architecture based on the source format—PCM signals are
decoded by the R-2R DAC, while DSD signals are processed by the 1-Bit DAC. This
seamless switching ensures each decoding performs at its peak, delivering authentic, true-to-source sound reproduction that preserves the full character and nuance of the
original recording.
R-2R Mode: Delivers a rich, smooth, and emotionally engaging sound with an expansive, relaxed presentation.
1-Bit Mode: Offers a more natural rendering of high-frequency overtones, with a clear
soundstage and precise imaging.
Quad-Channel Fully Balanced Headphone Amplifier Circuit
Built on a fully balanced DAC architecture, the amplifier section uses six pieces OPA1612 and OPA1662 operational amplifiers to form a fully symmetrical differential signal chain.
Four INA1620 op-amps forms the quad-channel balanced headphone amplifier, with dual internal channels paralleled per chip and four-chip balanced drive. This enables full differential amplification of analog audio signals, ensuring precise detail reproduction and exceptional dynamic response.
Matrix-Structured Clean Power Supply Design
The headphone amplifier is powered by an LT8582-based high-performance
dual-polarity boost supply, delivering ultra-clean power with microvolt-level ripple
suppression through LC filtering — significantly enhancing dynamic load response.
The DAC and op-amps are powered by a matrix formed from TPS61087 and TPS61240
converters, followed by 7 ultra-low-noise LDOs that independently power the digital, analog, and clock sections. This minimizes noise density and lays a robust foundation for high-fidelity audio output.
Quad-Channel Precision Analog Volume Control
Utilizes the JRC NJW1195 full-balanced volume control chip, offering 256-step
adjustments in 0.5dB increments. Through rigorous parameter analysis and acoustic
matching, 100 core levels are carefully selected to ensure low distortion and excellent
channel balance throughout the adjustment range — delivering pure sound quality with precise and efficient volume control. Phone Output Only: Pure and Purposeful
Within the limited PCB space, a dedicated audio circuit architecture is meticulously
optimized for direct load-driving using fully balanced signal transmission and
amplification. The R202 features a PO (Phone Out) output only, with no LO (Line Out) function — a design choice made to maintain purity and focus in audio output performance.
Great to deal with. Nice person.. I’ve purchased the Shanling m8t. Its a superb device and super service. Shipped just after 2 hours. Amazing
I’ll stay a customer
This unit has some great features and an amazing tonality. It has power to drive full-sized headphones and sensitive IEMs. I love the MagSafe capability as well. The only downside for me is the battery life. The 4-5 hour claim is generous as I don’t quite get that. But, the hyper mode via DC ups the tonal game considerably. The RU9 is my favorite DAC amp I own so far and I have been collecting for a while. Very happy with the purchase and you will be too.
Satin is a super fun IEM with a very natural, lush timbre and fantastic technical abilities, but is not an analytical IEM at all. It is, first and foremost, a tremendous musical IEM. It does instruments like no other. But of all the IEMs I’ve heard, Satin does guitar, acoustic bass, congas and timbales like no other.
The bone conduction doesn’t go too far like it does on other IEMs. You feel the deep impact of the bass, but it doesn’t rumble your bones. It’s all very balanced. I like that the bone conduction driver has all the cool effects but does not rattle my brain. It is superbly implemented. The bass extension and depth are incredible and hit with tremendous texture, clarity and resolution.
It's the beautiful harmonics, note weight and extension of the instrument notes that, to me, stand out. Guitars, acoustic bass, drums, percussion, horns, piano all sound so full and realistic. Vocals are presented with great force and clarity, but without brightness, and are never shouty.
The soundstage is really wide and spacious, like a concert hall. Imaging is excellent and all instruments can be easily placed on the stage. Really sounds live, especially with jazz.
What makes Quill Satin so special is its incredibly balanced presentation and its rather unique scalability. Most high end gear scales well, but not all sets are as sensitive to both cable and source as Satin. Each cable change sounds like a different IEM. This quality allows each owner to fine tune Satin to their own preferences, making it quite the chameleon. During my exploration period, I bought a few cables that I plan to keep so that I can have different flavors for various moods and/or genres of music.
If you have not tried Quill Satin, I highly recommend giving it a try.
Here's a link to my review on HeadFi:
https://www.head-fi.org/showcase/quill-acoustics-satin.28190/reviews#review-38364
Photos: left (EA Fusion 1); right (PlusSound Quad Copper 8W)
I find it to be a tad more natural on some songs than the default card, especially older songs (pre 1985)
Build quality is outstanding. Sound is excellent. System is very versatile. Highly recommended.
