Technical Specifications

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General Specifications

DAC Chip:

SA9312+ES9219C

Input bit depth:

Up to 32 bits

Input sample rate (USB):

PCM Max. 32bit 384KHz, Max 24bit 192KHz

DSD Support:

DSD 64, 128 (DOP), DSD 256 (Native)

MQA Rerender:

8X

USB device class:

UAC 2.0

Inputs:

USB Type-C

S/PDIF Optical (Max 24bit 192KHz)

Toggle Switch for input selection

Outputs:

Standard 3.5mm headphone port for headphones and headsets

RCA

SPDIF

Full-scale output level:

Max. 2.05Vrms @ 10K default

Output impedance:

<0.5R @ Headphone, 47R @ RCA

Recommended headphone impedance range:

10 Ohms ~ 600 Ohms

Frequency Response:

20Hz-40KHz +/-0.1dB

Signal-to-Noise Ratio (SNR):

121dB (10K）

Power Requirement:

USB 5V DC

Consumption:

~102mA (normal), ~121mA (with pink noise at 50% volume, 32bit 384Khz)

Indicators:

  • White: power/connected
  • Green: PCM 88.2-192kHz / DSD64
  • Blue: PCM 352.8-384kHz / DSD128
  • Purple: MQA
  • Green: Optical

Product dimensions

3.0" (7.62 cm) x 2.5" (6.35 cm) x 1" (2.5 cm)

Shipping weight
13.7 oz (0.39kg)

Environmental
Operating Temperature: 32 to 95 degrees F
Non-operating Temp: -4 to 113 degrees F
Relative Humidity: 5% to 95% non-condensing

Included Accessories:

  • USB-C cable
  • Lighning Cable
  • Setup guide
  • Microfiber bag

Quickstart Guide

 
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D1P QuickStart Guide

For the full setup guide, download the attached PDF:
D1P QuickStart Guide

Troubleshooting

 

D1P Troubleshooting Tips

The following troubleshooting tips can help diagnose and correct most concerns with the D1. We have attempted to make this list as comprehensive as possible. So, even though some of these may not apply to your issue, please still go through each one.

  1. Restart your device and make sure the OS and all related apps are up-to-date.
  2. Make sure the USB cable and audio cable connections to and from the D1P are complete, and verify that these cables are in working order by unplugging the cables and then reconnecting.  Try using the included USB cable if you are not already. If you’re using an Apple source with Lightning port, make sure the adapter cable is a certified Apple cable. 
  3. Remove all other USB devices temporarily from your computer to see how this affects the D1P playback.  Audio over USB and bus powering a device can both be somewhat demanding.  USB ports can share a bus internally and can also share their bus with devices internally as well.  Because of this, some ports may not perform as well as others, so be sure to try each USB port one at a time.
  4. If using Windows, uninstall the USB driver from your computer.  Then disconnect the USB cable to remove the D1Pfrom your computer and plug it back in to allow the driver to reinstall automatically.  You can find complete instructions from Microsoft on how to reinstall a plug-and-play device under Windows here.
  5. If you are using an intel-based Mac, try a NVRAM/PRAM reset.  This resets the system configurations for some audio and video related things and can many times help clear up problems related to audio.  See Apple’s support page for information on how to do this. Also, be sure to check the App store to see if there's a newer version of Mac OS you could be running.
  6. Try music with different bit depths and sample rates.  On a Mac these settings are under Applications --> Utilities --> Audio MIDI Setup.  Try using both 16-bit as well as 24-bit settings.
  7. Experiment with using a different media player (iTunes, Songbird, Win Amp, Cog, etc.) and different audio file types (MP3, ALAC, FLAC, etc.).  And if your media library is located on an external drive or network attached storage (NAS), try playing audio files on your internal local hard-drive.
  8. When using the optical input on your D1P, be sure that your source device (computer, TV, CD/DVD player, etc.) is set to PCM Stereo output and not Dolby Digital or DTS.
  9. If you are using a wireless device with D1P, temporarily remove the wireless adapter from the setup and connect the D1P directly to the audio source.
  10. If possible, try your D1P with a different device to see if something is causing an issue in the current setup.
For the full setup guide, download the attached PDF:

FAQ's

All Optical audio is considered a "fixed" output, meaning volume will not attenuate from the TV remote. If you have an HD5/HD6 you can use the Audioengine remote for this. Fo

We take great pride in our products, and go through great lengths to ensure consistency and quality. For that reason, this item was randomly selected for an additional step of Quality Assurance.

No external power is required. The D1P has a minimal power draw and can be powered directly by your mobile device or computer, ensuring efficient operation without significant power consumption. If you do not have a computer close by and are using the optical, any 5v DC USB power supply will work.

The D1P supports a wide range of headphones, from 10-600 Ohms, accommodating nearly all audiophile-grade headphones.

The D1P gives priority to the optical input over USB when dual connected.

Ensure the toggle switch is set to the headphone output and not the line out. This common step is overlooked and is crucial for directing audio correctly.

Key components include a Savitech SA9312 USB, an ESS ES9219C DAC for superior audio decoding, and a Cirrus Logic CS8416 for optical input, ensuring premium performance and sound quality.

The Toslink digital optical input allows the D1P to accept PCM stereo streams from any optical source, like TVs, computers, and media servers, providing flexible and high-quality audio connectivity.

The D1P processes PCM digital audio up to 32 bits and a maximum sample rate of 384kHz. It also supports DSD playback up to DSD128, allowing for high-resolution audio playback.

Yes, the D1P has built-in MQA hardware to complete the final unfold of an MQA audio file, offering a crystal clear listening experience.

The D1P supports MQA, FLAC, PCM, and DSD formats, ensuring it can handle a wide range of high-quality audio files for your listening pleasure.

By bypassing your computer’s internal DAC or sound card, the D1P with its advanced DAC technology and custom audiophile-grade connectors delivers a more expansive and detailed soundstage, enhancing your listening experience across platforms like iTunes, TIDAL, Spotify, and Pandora.

The D1P accepts both USB-C and S/PDIF optical input from any device with a TOSLINK digital optical, for your digital audio sources.

It is powered by your devices through a USB-C connection, with no need for an additional/external power source. This ensures convenient and versatile use across all your digital devices on-the-go, or from your home.

Absolutely, the D1P is engineered to power audiophile-grade headphones effortlessly. Its robust yet portable 32-bit headphone amplifier ensures superior sound quality from even the most demanding headphones.

The D1P works with iOS, Android, MacOS, and Windows devices, supporting any device with a USB or digital audio output, including phones, laptops, and computers.

Audio formats and bitrates are shown by the color of the indicator light on the D1P

White PCM 32-48kHz

Green PCM 88.2-192kHz, DSD64, Optical

Blue PCM 352.8-384kHz, DSD128

Purple MQA Rendering

*When connected to a Mac or PC, the indicator light reflects what your system sound audio output quality is set to, not the bitrate of the specific track you’re playing.

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