Digital to Analog Audio Decoder DA34 - Optical to RCA and Headphone

In this review the DA34 digital to analog audio decoder is judged as a practical, no-frills converter for anyone who needs to feed older analog speakers or headphones from modern digital sources. The single biggest reason to buy is its straightforward decoding of DTS and Dolby Digital down to a reliable 2.0CH stereo output so that TVs, CD players, or set-top boxes with SPDIF or coaxial outputs can connect to RCA or 3.5mm analog inputs without fuss. Setup is plug-and-play for most users once the correct input and power are selected.

Key Features

• Decodes multichannel audio: Converts DTS and Dolby Digital source signals into an analog 2.0CH stereo signal for legacy speakers and headphones.
• Dual digital inputs: Supports SPDIF optical and coaxial digital audio inputs, allowing connection to modern TVs and media players.
• Simultaneous outputs: Provides RCA L/R and a 3.5mm headphone output at the same time so two devices can be connected together.
• Simple troubleshooting guidance: Clear instructions on power, fully inserted optical cable, and switching TV audio to PCM help resolve common no-sound issues.
• Side input switch: A side-mounted selector ensures the unit decodes the correct incoming digital signal without swapping cables.

Who It's For

The DA34 is best for users who need a compact, reliable way to play modern digital audio from a TV or media source through older analog speakers, soundbars with RCA, or wired headphones. It suits homeowners who replace a streaming box or smart TV and still want to use a favorite stereo without buying a new receiver.

It is not for audiophiles who want preserved multichannel surround at speaker level or for setups that require advanced equalization or digital volume control. Also, users who rely solely on Bluetooth or HDMI ARC for home theater integration should look for a different adapter that handles those interfaces.

Pros & Cons

Pros

• Easy, plug-and-play decoding of Dolby and DTS to stereo for quick analog connections.
• Both optical SPDIF and coaxial digital inputs increase compatibility with many TVs and players.
• Simultaneous RCA and 3.5mm outputs let users feed speakers and headphones at once.
• Practical troubleshooting tips reduce setup headaches for typical TV configurations.

Cons

• Only outputs 2.0CH stereo, so multichannel speaker setups are not supported beyond downmixing.
• Requires attention to input selection, cable seating, and TV audio menu settings to avoid signal loss.

Specifications

Product type	Digital to analog audio decoder
Inputs	SPDIF optical, coaxial
Outputs	RCA L/R and 3.5mm headphone (simultaneous)
Decoded formats	DTS and Dolby Digital to 2.0CH stereo
Input selector	Side-mounted switch for Optical or Coaxial
Power	External power adapter required

Our Verdict

The DA34 is a sensible, budget-friendly decoder for anyone who needs to extract stereo analog audio from a TV or digital source. It delivers reliable downmixing of Dolby and DTS to RCA or headphone outputs with minimal setup, making it good value for users who want to keep existing analog speakers or headphones functional with modern devices.

Frequently Asked Questions

Will this unit work with my TV optical jack?
Yes; plug the TV's SPDIF optical cable into the DA34 optical input, set the side switch correctly, and ensure the optical cable is fully seated and the TV audio output is set to PCM if needed.

Can I use RCA and headphones at the same time?
Yes; the DA34 supports simultaneous RCA L/R and 3.5mm headphone outputs so both can be connected simultaneously.

What if I get no sound?
Check that the power adapter is connected, the correct input is selected, cables are fully inserted, and change the TV audio out to PCM Only if the TV is outputting encoded multichannel audio.