SpeaKa Professional SP-ATDAC-100 Analog to Digital Audio Converter RCA to Toslink & Coaxial 24-bit/48kHz Black SP-13904368

Unlike basic RCA-to-optical boxes that force you to choose one digital output, the SP-ATDAC-100 converts analog stereo to Toslink and coaxial simultaneously, so you can feed an AV receiver and a recorder from the same source without extra splitters. Its metal shell and 24-bit/48 kHz engine keep the signal clean even next to power bricks and Wi-Fi routers.

Highlights

• Converts analog RCA stereo to digital PCM on Toslink and coaxial outputs at the same time
• Supports 32 kHz, 44.1 kHz and 48 kHz sampling rates with 24-bit depth for transparent conversion
• Low-noise design: SNR >90 dB and crosstalk below -85 dB preserve channel separation
• Plug & Play – no driver or software installation, powered by the included 5V DC adapter
• Rugged black metal housing with compact footprint for permanent installations

In daily use

Connect a tape deck, phono preamp, mixing console or legacy TV audio output to the RCA inputs, then run Toslink to a soundbar or AV receiver and coaxial to a CD recorder, DSP or second zone. The converter locks to the incoming signal automatically and outputs a stable S/PDIF stream on both ports. Because the chassis is metal and the power draw is only 0.5 W, it can sit inside a cabinet or behind a rack without adding noise or heat. The external 5V adapter keeps hum away from the audio path, and the LED confirms lock status at a glance.

Full specifications

• Product type: Analog-to-digital audio converter (ADC)
• Input: 2 x RCA (Cinch) stereo L/R, analog line level
• Outputs: 1 x Toslink optical, 1 x coaxial RCA (S/PDIF digital)
• Supported output format: PCM stereo, 2-channel
• Sampling rates: 32 kHz, 44.1 kHz, 48 kHz
• Bit depth: 24-bit
• Frequency response: 20 Hz – 20 kHz
• Signal-to-noise ratio: >90 dB
• Crosstalk: < -85 dB
• Power supply: 5V DC, 1A external adapter (included)
• Power consumption: max. 0.5 W
• Housing: metal, black
• Operating temperature: 0 – 70 °C
• Relative humidity: 10 – 85 % RH (non-condensing)
• Included accessories: 5V DC power adapter, user manual

Final note

If you need a dependable bridge between analog sources and modern digital inputs, the SP-ATDAC-100 delivers simultaneous optical and coaxial feeds with studio-grade specs in a compact, shielded package.