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Back to basics!
The Dethonray PRELUDE DTR1+ deliberately avoids everything that, according to Anson, chief developer and mastermind at Dethonray, could negatively influence the sound: No Android, no streaming, no touchscreen. The DTR1+ is pure sound and
doesn't have to hide from even the best and most expensive competitor products!
Reviews
"When it's time to just listen to your archive alone, there's not a better option for that sole purpose. There's nothing else better for this price tag in terms of pure sound performance... Looking at the DAP market, I doubt anyone can show me a player for this price with a better sound. The DTR1+ certainly has a spot in ours Best Portable Player Recommendations." - Berkhan - Headfonia
Dethonray DTR1+ Review - Headfonia Reviews
Energy - but properly
Power supply plays a major role in hi-fi and portable audio systems. Most portable designs suffer from universal power supply designs, which severely compromise signal processing quality.
The DTR1 adapts a dual, high-fidelity battery-operated power supply system that ensures the separation of digital and analog power supplies to eliminate circuit noise from the source, similar to an enhanced DAP + amplifier system, but with a minimal path and brazed connections without compromise.
The ±8.4V power supply significantly improves the efficiency of the system's clean power supply, with noticeable qualities in terms of transparency and noise reduction without the need for excessive attenuation of the output.
DTR1+ Design
DAC
DTR1+ selects the AK4490EQ for its reliability and specific sound performance. The chipset supports up to 32-bit/768K and switchable digital filters, offering diverse listening experiences.
Since its first Delta-Sigma DAC in 1989, AKM has strived to reproduce the original sound. This has become the "Velvet Sound" philosophy, which aims to create an active space in sound reproduction, like a live performance.
software
"A superhighway for signals" - The DTR1 runs on a deeply customized Linux OS audio subsystem, utilizing an OSS subsystem that is 30% more efficient than the ALSA audio subsystem. The customized and optimized "Nature" decoding engine effectively synergizes with the Linux OS, decoding under optimal conditions and reducing transmission delay.
Patented, ultra-lightweight GUI system "Ocelot", custom GAI (Graphics Abstract Layer), GDI (Graphic Device Interface), IAL (Input Abstract Layer), SCM (System Control Module), audio file indexing system - promises minimal MMI, high-speed navigation, and supports indexing of up to 160,000 songs!
Improved software
Redesign of the gain and volume audio subsystem:
- Updated Gain control to support different IEMs, earbuds, headphones.
- Improved volume control to make the sound more accurate and natural.
- Adding artist indexing and classification functionality.
- Adding L/R channel volume compensation.
Improved Hardware
- The low-pass filter circuit was revised and the DPPU (Desktop Plus Power Unit) was pushed to its limits.
- Higher Resolution and better control options.
- More balanced and consistent sound quality.
| Micro Card Supported | 1T (Sandisk untra) |
| Format Supported | WAV, FLAC, WMA, MP3, APE AAC, ALAC, AIFF, DFF/DSF, OGG, ISO，DTS |
| Bit Depth & Sample Rate | 44.1/48/88.2/96/176.4/192 kHz 16/24/32 bit |
| Frequency Response | 20Hz – 20kHz |
| performance | SNR 117db THD 0.008% |
| Max. Power Output | 6Vrms+R：6Vrms+L (16Ω) |
| output | Line-out & Earphone |
| Battery Endurance | 8 hours |
| Dimensions | H100 W57 D18.6 (mm) |
| Color | Black |
| Weight | 160g |
