Use case
- Enjoy the DAP on the go during the day.
- At home, put it in a dock/cradle with power in and digital out: either USB, or if that is not supported, then SPDIF coaxial output, or Toslink optical output.
- Connect the digital out to an external DAC and enjoy.
Requirements
R1. bit-perfect USB audio output.
[R2. otherwise TCXO clock and SPDIF coaxial output is needed.]
[R3. otherwise TCXO clock + SPDIF optical output is needed.]
R4. internal architecture optimized in order to have highest quality digital output.
R5. it doesn't harm to have good internal DAC and amp for the portable use.
R6. hot-swappable SD cards, at least 128 GB.
R7. should support streaming (Tidal, Spotify, eventually DLNA).
[R8. works as external DAC.]
Problem
There are few DAPs that also support USB audio out. Some of the good sounding ones have no digital out (e.g. Calyx M), or only optical out (e.g. Opus #3), or the non-USB digital out reportedly sounds better than the USB out (e.g. Cowon PM2).
Several smartphones do provide high-res bit-perfect USB audio out, e.g. the Sony Z3 series when used with Android 4.4.4 images and Sony audio drivers. However, R4 is somewhat compromised, and a DAP might have better architecture for digital audio out.
Several DAPs have limited support for R1, [R2, R3], e.g. Fiio X5iii, Cayin i5, etc. Future firmware updates might fix that. The question is with what Android version.
Alternatives
1. Sony NW-ZX2 (USB out) and similar Sony players (ZX300, ZX100?)
Supports R1 (USB audio out) with the optional WMC-NWH10 cable, or via the BCR-NWH10 dock/cradle.
It also supports R4 and it provides digital out that "sounds" better than a Sony Z3 digital out.
In fact, it ticks all requirements except R2 and R3 that are optional if R1 is supported.
2. iBasso DX200 (USB out, SPDIF coaxial + optical)
Also ticks all boxes, except that it may sound a bit bright?
3. Fiio X7ii (USB out, SPDIF coaxial)
4. Onkyo DP-X1A (USB out?)
Recommendations (DAP transport as good as high-end CD transports/players)
AK SP1000
Sony NW-ZX2
(Any other suggestions?)
- Enjoy the DAP on the go during the day.
- At home, put it in a dock/cradle with power in and digital out: either USB, or if that is not supported, then SPDIF coaxial output, or Toslink optical output.
- Connect the digital out to an external DAC and enjoy.
Requirements
R1. bit-perfect USB audio output.
[R2. otherwise TCXO clock and SPDIF coaxial output is needed.]
[R3. otherwise TCXO clock + SPDIF optical output is needed.]
R4. internal architecture optimized in order to have highest quality digital output.
R5. it doesn't harm to have good internal DAC and amp for the portable use.
R6. hot-swappable SD cards, at least 128 GB.
R7. should support streaming (Tidal, Spotify, eventually DLNA).
[R8. works as external DAC.]
Problem
There are few DAPs that also support USB audio out. Some of the good sounding ones have no digital out (e.g. Calyx M), or only optical out (e.g. Opus #3), or the non-USB digital out reportedly sounds better than the USB out (e.g. Cowon PM2).
Several smartphones do provide high-res bit-perfect USB audio out, e.g. the Sony Z3 series when used with Android 4.4.4 images and Sony audio drivers. However, R4 is somewhat compromised, and a DAP might have better architecture for digital audio out.
Several DAPs have limited support for R1, [R2, R3], e.g. Fiio X5iii, Cayin i5, etc. Future firmware updates might fix that. The question is with what Android version.
Alternatives
1. Sony NW-ZX2 (USB out) and similar Sony players (ZX300, ZX100?)
Supports R1 (USB audio out) with the optional WMC-NWH10 cable, or via the BCR-NWH10 dock/cradle.
It also supports R4 and it provides digital out that "sounds" better than a Sony Z3 digital out.
In fact, it ticks all requirements except R2 and R3 that are optional if R1 is supported.
2. iBasso DX200 (USB out, SPDIF coaxial + optical)
Also ticks all boxes, except that it may sound a bit bright?
3. Fiio X7ii (USB out, SPDIF coaxial)
4. Onkyo DP-X1A (USB out?)
Recommendations (DAP transport as good as high-end CD transports/players)
AK SP1000
Sony NW-ZX2
(Any other suggestions?)
Last edited: