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Small black box with optical, USB and Bluetooth 5.0 inputs, RCA and 3.5mm outputs, remote included

ESTONE

ESTONE 192kHz DAC Converter SPDIF Optical USB Bluetooth 5.0 to L/R RCA 3.5mm

SKU CH-RN4D-ZEYAT

Converts digital audio from optical, USB or Bluetooth 5.0 into analogue RCA and 3.5 mm outputs at up to 192 kHz 24-bit

  • TypeDigital to Analog Audio Converter
  • Connector A1 x SPDIF & USB & Bluetooth Receiver Input
  • Connector B1 x L/R RCA & 3.5mm Audio Jack Output
  • AudioYes
  • Package Contents1 x Digital to analog audio converter 1 x USB power cable 1
  • Converts digital audio to analog for amplifiers
  • Bluetooth 5.0 streams wirelessly to your sound system
  • Supports 192 kHz 24-bit sampling for high-resolution playback
  • 125 mW headphone amp drives 16-300 ohm cans
  • USB flash drive plays MP3 WAV APE FLAC WMA

Connectivity for legacy and modern sources

The converter accepts optical Toslink, USB flash drives and Bluetooth 5.0 streams, then outputs stereo analogue audio through both RCA phono sockets and a 3.5mm jack simultaneously. It is aimed at listeners who want to connect a TV, games console or network streamer to an older amplifier or powered speakers that lack digital inputs. The built-in DAC handles PCM and LPCM at sampling rates up to 192kHz/24-bit.

Optical and coaxial inputs limited to PCM

Only two-channel linear PCM and LPCM are supported on the optical and coaxial paths; bitstream formats such as Dolby Digital or DTS will not decode and produce silence or noise. USB playback adds MP3, WAV, APE, FLAC and WMA lossless file support, but the same PCM restriction applies to any digital stream presented to the DAC. Bluetooth reception uses the 5.0 specification for standard A2DP stereo streaming.

Headphone amplifier rated at 125mW per channel

The on-board headphone stage delivers 125mW into a 32-ohm load and is specified for loads between 16 and 300 ohms. This output level suits efficient portable headphones and many desktop models, but high-impedance or low-sensitivity designs may not reach desired volume. Buyers needing more drive for demanding cans should consider a dedicated headphone amplifier.

Highlights

  • Converts digital audio to analog for amplifiers
  • Bluetooth 5.0 streams wirelessly to your sound system
  • Supports 192 kHz 24-bit sampling for high-resolution playback
  • 125 mW headphone amp drives 16-300 ohm cans
  • USB flash drive plays MP3 WAV APE FLAC WMA

Specifications

TypeDigital to Analog Audio Converter
Connector A1 x SPDIF & USB & Bluetooth Receiver Input
Connector B1 x L/R RCA & 3.5mm Audio Jack Output
AudioYes
Package Contents1 x Digital to analog audio converter
1 x USB power cable
1 x IR Remote Control
1 x User Manual

Questions about this item

Should I use the optical, USB or Bluetooth 5.0 input for my setup?

Choose optical for TVs or consoles that output PCM or LPCM at up to 192KHz, USB for flash drives with MP3, WAV, APE, FLAC or WMA files, or Bluetooth 5.0 for wireless streaming from a phone or tablet.

What does the 192KHz / 24bit spec mean when I connect this to my amplifier?

The DAC accepts optical or coaxial signals at 32, 44.1, 48, 96 and 192KHz and converts them to analogue stereo on the RCA and 3.5mm outputs simultaneously.

How does the Bluetooth 5.0 receiver limit the audio quality I actually hear?

Bluetooth 5.0 handles the wireless link; the DAC then outputs analogue stereo at the same 192KHz / 24bit capability as the wired inputs, with 125mW per channel into 32ohm headphones.

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