Which Raspberry Pi models are compatible with this TeraDak audio board?

The TeraDak I2S to SPDIF HiFi Audio Board is fully compatible with any Raspberry Pi featuring a standard 40-pin GPIO header, specifically the Raspberry Pi 3, Pi 4, and the newest Pi 5 models. It simply snaps onto the top of the board like a standard HAT.

Do I need to install special drivers to use this audio board?

Yes, you need to configure your operating system to output audio via I2S. If you are using dedicated audiophile operating systems like Volumio, Moode Audio, or RuneAudio, the drivers for the WM8804G chip (often listed as Hifiberry Digi or generic I2S DAC) are pre-installed and just need to be selected in the audio output settings.

What is the purpose of the 5V DC jack on the board?

The 5V DC jack on the TeraDak I2S to SPDIF HiFi Audio Board allows you to power the audio components using an external, low-noise linear power supply. By changing the onboard jumper from "Pi+5V" to "EXT+5V", you isolate the audio board from the electrical noise generated by the Raspberry Pi, resulting in purer sound quality.

Can I output audio from both the Coaxial and Optical ports simultaneously?

Yes, the TeraDak I2S to SPDIF HiFi Audio Board outputs the digital audio signal to both the gold-plated Coaxial RCA port and the Optical TOSLINK port at the same time, allowing you to connect two different DACs or receivers if needed.

Can I buy this Raspberry Pi audio board in Sham Shui Po today?

Absolutely! Sun Cheong Computer Co. Ltd. keeps a large inventory of Raspberry Pi accessories and DIY audio components at our Sham Shui Po physical store. You can order online and pick up your TeraDak audio board instantly during our business hours.

TeraDak I2S to SPDIF Audio Board

Name: TeraDak I2S to SPDIF Audio Board | Raspberry Pi 3/4/5
Brand: Teradak
SKU: 21CU000162
Price: 220.0 HKD
Availability: InStock

Short Product Description

Transform your standard microcomputer into a premium audiophile streamer with the TeraDak I2S to SPDIF HiFi Audio Board. Specifically designed for the Raspberry Pi 3, Pi 4, and Pi 5, this digital sound card extracts pure I2S audio and outputs it via high-fidelity Coaxial (RCA) and Optical (TOSLINK) ports. Featuring the renowned WM8804G transceiver chip and a dedicated 5V DC input for isolated power, it delivers jitter-free, studio-quality sound to your external DAC. Need help configuring your DIY audio streamer? 新昌電腦有限公司 (Sun Cheong Computer Co. Ltd.) has over 20 years of electronic component expertise. Visit our Sham Shui Po physical store for instant pickup and expert Raspberry Pi technical advice!

Key Features

Broad Compatibility: Mounts perfectly onto the 40-pin GPIO header of Raspberry Pi 3, Pi 4, and the latest Pi 5 models.
Premium Audio Chipset: Features the WM8804G S/PDIF transceiver for flawless I2S to digital audio conversion with ultra-low jitter.
Dual Digital Outputs: Provides both a gold-plated Coaxial (RCA) port and an Optical (TOSLINK) port for versatile DAC connectivity.
Galvanic Isolation: Utilizes a Pulse PE-65612NL transformer on the coaxial line to eliminate ground loop noise and interference.
Independent Power Option: Includes a 5V DC input jack and jumper pins, allowing audiophiles to use a clean, external linear power supply.
Complete Mounting Kit: Comes with high-quality copper standoffs and screws for secure, vibration-free installation on your Raspberry Pi.

Full Product Description

High-Fidelity Digital Audio Transport

The TeraDak I2S to SPDIF HiFi Audio Board upgrades your standard Raspberry Pi into a high-end digital audio transport system. The built-in audio jack on a Raspberry Pi is notoriously noisy and unsuitable for serious music listening. By mounting this expansion board (HAT) directly onto the 40-pin GPIO header, you bypass the onboard audio processing entirely, allowing your Pi to deliver bit-perfect, studio-quality digital audio to your home theater or HiFi system.

Pure I2S to SPDIF Conversion

The TeraDak HiFi Audio Board utilizes the highly respected WM8804G transceiver chip to extract pure I2S digital audio signals directly from the Raspberry Pi's CPU. This direct I2S extraction eliminates USB bus bottlenecks and CPU overhead. Combined with a dedicated 27.000MHz active crystal oscillator, the board ensures ultra-low jitter and precise timing, resulting in a cleaner, more dynamic soundstage for your lossless music files.

Isolated Coaxial & Optical Outputs

Connect seamlessly to any high-end Digital-to-Analog Converter (DAC) using the dual output options on the TeraDak I2S to SPDIF Board. It features a gold-plated Coaxial RCA output and a standard Optical TOSLINK port. The coaxial output is galvanically isolated using a premium Pulse PE-65612NL digital audio transformer, which effectively blocks ground loop noise and electromagnetic interference (EMI) from the Raspberry Pi motherboard.

💡 Pro Tip from Our Technicians

"To achieve the absolute best sound quality from the TeraDak I2S to SPDIF HiFi Audio Board, we highly recommend using an external linear power supply! The board features a dedicated 5V DC input jack and a jumper switch. By moving the jumper from 'Pi+5V' to 'EXT+5V', you completely isolate the audio board's power from the noisy Raspberry Pi motherboard. If you are building a Volumio or Moode Audio streamer and need help selecting the right power supply or configuring the I2S DAC drivers, drop by our Sham Shui Po store! Our team at 新昌電腦有限公司 (Sun Cheong Computer Co. Ltd.) loves helping audiophiles perfect their DIY setups."

Technical Specifications

Product Type: Digital Audio Expansion Board (Audio HAT)
Brand: TeraDak
Compatibility: Raspberry Pi 3, Raspberry Pi 4, Raspberry Pi 5 (40-pin GPIO)
Audio Transceiver Chip: WM8804G
Digital Outputs: 1x Coaxial (RCA), 1x Optical (TOSLINK SPDIF)
Isolation Transformer: Pulse PE-65612NL
Clock Oscillator: 27.000MHz Active Crystal
Power Input Options: Pi GPIO 5V OR External 5V DC Jack (Selectable via jumper)
Dimensions: 6.5cm x 6.5cm x 2.5cm
Weight: 33.6g
Package Includes: 1x Audio Board, 4x Copper Standoffs, 8x Screws

Delivery Options

Local delivery within Hong Kong and in-store pickup.
Free shipping for orders of HK$400 or above; HK$35 shipping fee for orders below HK$400.
Shipped by SF Express, usually dispatched the same day for orders confirmed before 6:00 PM (Mon–Sat).
Estimated delivery time: 1–3 business days after dispatch (Hong Kong).
In-store pickup details (location and time) will be confirmed by email or phone message.
Delivery times are estimates and may be affected by weather or unforeseen circumstances.

FAQ Section

Which Raspberry Pi models are compatible with this TeraDak audio board?The TeraDak I2S to SPDIF HiFi Audio Board is fully compatible with any Raspberry Pi featuring a standard 40-pin GPIO header, specifically the Raspberry Pi 3, Pi 4, and the newest Pi 5 models. It simply snaps onto the top of the board like a standard HAT.
Do I need to install special drivers to use this audio board?Yes, you need to configure your operating system to output audio via I2S. If you are using dedicated audiophile operating systems like Volumio, Moode Audio, or RuneAudio, the drivers for the WM8804G chip (often listed as Hifiberry Digi or generic I2S DAC) are pre-installed and just need to be selected in the audio output settings.
What is the purpose of the 5V DC jack on the board?The 5V DC jack on the TeraDak I2S to SPDIF HiFi Audio Board allows you to power the audio components using an external, low-noise linear power supply. By changing the onboard jumper from "Pi+5V" to "EXT+5V", you isolate the audio board from the electrical noise generated by the Raspberry Pi, resulting in purer sound quality.
Can I output audio from both the Coaxial and Optical ports simultaneously?Yes, the TeraDak I2S to SPDIF HiFi Audio Board outputs the digital audio signal to both the gold-plated Coaxial RCA port and the Optical TOSLINK port at the same time, allowing you to connect two different DACs or receivers if needed.
Can I buy this Raspberry Pi audio board in Sham Shui Po today?Absolutely! Sun Cheong Computer Co. Ltd. keeps a large inventory of Raspberry Pi accessories and DIY audio components at our Sham Shui Po physical store. You can order online and pick up your TeraDak audio board instantly during our business hours.

Target Users / Applications

Audiophiles & HiFi Enthusiasts: Building custom, low-noise network music streamers (using Volumio or Moode) to feed bit-perfect digital audio into high-end external DACs.
Raspberry Pi DIY Makers: Upgrading standard Raspberry Pi 4 or 5 setups into dedicated home theater media centers with optical surround sound output.
Audio Engineers: Creating compact, portable digital audio testing rigs that require isolated, jitter-free SPDIF signal generation.