Lunatic
100+ Head-Fier
Now that the May 1st holiday is over I think I can finally post some of my impressions about the DTR1 since I received it over ten days ago. Thanks to Mimouille's intro I've been in touch with the developer to give some continuous feedback to the UI and some minor details about playback experience along the way. I have to say the developer has been extremely pleasant to deal with and has always been very responsive and proactive about improving the user experience.
I mainly listen to classical music with a small dose of classical rock and jazz, so my belief has always been that if my audio equipment can faithfully and naturally reproduce the sound of acoustic instruments and the human voice, then it should be able to handle most other genres of music just fine. Having said that, I listen to music for enjoyment so I am not a huge fan of those pure "reference" or "studio monitor" type of sound as those can sound like distilled water which brings me no fun.
My feedback of the DTR1 so far:
1. Lively, engaging sound with good detail presentation yet it never sounds cold, analytic or harsh. It makes want to tap my fingers or smile while listening to some of my most familiar music tracks. Throw anything from piano solos to tenor arias to symphony orchestras to rock bands I'm always rewarded by the involving sound the DTR1 produces. Instrument timbre is superb, soundstage is full, etc. But for me the most important thing is that the sounds carries the emotion and feeling of the performance.
2. Thanks to the specially designed power supplies the DTR1 is both very powerful and has very high signal to noise ratio. This little player can drive the Focal Utopia really well. It's not just loud enough, I mean I get all of the Utopia's goods, super accurate representation of instruments and full-bodied soundstage. I also tried the HiFiMAN HE1000V2 and the MrSpeakers Ether C Flow with the DTR1. HE1000V2 sounds quite decent although the volume level is already at around 70-75% in high gain mode. AKG's K872 also pairs quite well with the DTR1. The only pairing that's less than satisfactory for me is my Fostex TH900 (original version) which sounds a little thin and lack of weight in the bass region. Of the IEMs that I have, I've had great results with both the Light Harmonic Stella and the Dunu DK4001. Both perform really well within low gain mode and without any hiss. I can't wait to pair the DTR1 with some higher-end IEMs like the LH Oscar XXI in the near future... I also briefly tried the 3.5mm line-out and it worked well, nothing special there.
3. The firmware: UI is very responsive and fluid. The most impressive part is that the DTR1 scans and indexes my nearly-full 400GB microSD card within ten seconds and never had any issues with the file system. As a classical music lover one of the most important features in a DAP for me is gapless playback and that's one of the areas that I had some discussions with the developer while he promptly experimented with different settings before settling on one version that's I can say nails gapless nearly 100%. The firmware is quite mature and bug-free now and we can expect a few new additions like browsing by album or artist. I am also hopeful that some kind of SACD ISO support will come at a certain stage...
4. Build quality: Impeccable for the price range. Physical buttons are tactile and responsive. No complaints here. Screen works well indoors but is almost useless in outdoor conditions.
5. Battery power: I haven't drained it totally yet but I think we're not far from the 10-hour claimed playback time. The special design in the power supplies means the DTR1 needs a proprietary power adapter with a micro HDMI connector. It cannot be charged via USB. I'll have to pack one more thing when I am traveling which is less than ideal. But after talking with the developer I believe the specially designed power supplies contribute a lot to the sounds and the power of this small DAP that we should learn to live with this minor nuisance.
So far the DTR1 is a very pleasant surprise from a new brand that definitely has the passion and dedication to great sound and user experience. Given the price range I think we have a winner here, especially in today's market where US$2K+ seems to be an entry barrier for "decent" high fidelity DAPs. The DTR1 belongs to that first tier of portable audio gear. Highly recommended.
Lunatic

I mainly listen to classical music with a small dose of classical rock and jazz, so my belief has always been that if my audio equipment can faithfully and naturally reproduce the sound of acoustic instruments and the human voice, then it should be able to handle most other genres of music just fine. Having said that, I listen to music for enjoyment so I am not a huge fan of those pure "reference" or "studio monitor" type of sound as those can sound like distilled water which brings me no fun.

My feedback of the DTR1 so far:
1. Lively, engaging sound with good detail presentation yet it never sounds cold, analytic or harsh. It makes want to tap my fingers or smile while listening to some of my most familiar music tracks. Throw anything from piano solos to tenor arias to symphony orchestras to rock bands I'm always rewarded by the involving sound the DTR1 produces. Instrument timbre is superb, soundstage is full, etc. But for me the most important thing is that the sounds carries the emotion and feeling of the performance.
2. Thanks to the specially designed power supplies the DTR1 is both very powerful and has very high signal to noise ratio. This little player can drive the Focal Utopia really well. It's not just loud enough, I mean I get all of the Utopia's goods, super accurate representation of instruments and full-bodied soundstage. I also tried the HiFiMAN HE1000V2 and the MrSpeakers Ether C Flow with the DTR1. HE1000V2 sounds quite decent although the volume level is already at around 70-75% in high gain mode. AKG's K872 also pairs quite well with the DTR1. The only pairing that's less than satisfactory for me is my Fostex TH900 (original version) which sounds a little thin and lack of weight in the bass region. Of the IEMs that I have, I've had great results with both the Light Harmonic Stella and the Dunu DK4001. Both perform really well within low gain mode and without any hiss. I can't wait to pair the DTR1 with some higher-end IEMs like the LH Oscar XXI in the near future... I also briefly tried the 3.5mm line-out and it worked well, nothing special there.
3. The firmware: UI is very responsive and fluid. The most impressive part is that the DTR1 scans and indexes my nearly-full 400GB microSD card within ten seconds and never had any issues with the file system. As a classical music lover one of the most important features in a DAP for me is gapless playback and that's one of the areas that I had some discussions with the developer while he promptly experimented with different settings before settling on one version that's I can say nails gapless nearly 100%. The firmware is quite mature and bug-free now and we can expect a few new additions like browsing by album or artist. I am also hopeful that some kind of SACD ISO support will come at a certain stage...
4. Build quality: Impeccable for the price range. Physical buttons are tactile and responsive. No complaints here. Screen works well indoors but is almost useless in outdoor conditions.
5. Battery power: I haven't drained it totally yet but I think we're not far from the 10-hour claimed playback time. The special design in the power supplies means the DTR1 needs a proprietary power adapter with a micro HDMI connector. It cannot be charged via USB. I'll have to pack one more thing when I am traveling which is less than ideal. But after talking with the developer I believe the specially designed power supplies contribute a lot to the sounds and the power of this small DAP that we should learn to live with this minor nuisance.
So far the DTR1 is a very pleasant surprise from a new brand that definitely has the passion and dedication to great sound and user experience. Given the price range I think we have a winner here, especially in today's market where US$2K+ seems to be an entry barrier for "decent" high fidelity DAPs. The DTR1 belongs to that first tier of portable audio gear. Highly recommended.
Lunatic






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