The Esparagus HiFi MediaLink Utilizes ESP32 to Modernize Your Classic Stereo

The Esparagus HiFi MediaLink is a device designed to upgrade legacy stereo systems into an internet streaming device. The device hosts an ESP32 module and a DAC to stream music from services like Spotify, controlled via a smartphone or computer.

This tiny and unique streaming device is designed by a Polish designer goes by the name of Sonocotta. In his post, he goes on and say,

I did few audio projects in the past, some using ESP32, some using larger Orange Pi and Raspberry Pi devices. Each has its pros and cons, and each iteration I’m trying to focus on the details that were working best for me, while actually using them.

The device features an ESP32-WROVER module with dual-core 240MHz LX6 processors and 4MB PSRAM for audio buffering, coupled with a Texas Instruments PCM5100A DAC for 2.1 VRMS audio output via a 3.5mm jack.

The Esparagus module connects to speakers or hi-fi audio system, through a 3.5mm jack, and it is powered by a USB Type-C port. Additionally, it includes an external antenna connector for robust metal box housing.

In his post, he goes on and explain the device’s unique name, “Esparagus,” which was suggested by ChatGPT when creator Malyshenko asked for a fruit or vegetable name sounding similar to ESP32, the core component of the device.

Key Features of the Esparagus HiFi MediaLink

• Device: Esparagus HiFi MediaLink, for upgrading legacy stereo systems.
• Designer: Created by Sonocotta, Poland.
• Core Module: ESP32-WROVER, dual 32-bit LX6 cores, 240MHz.
• Memory: 4MB PSRAM for audio buffering.
• DAC: Texas Instruments PCM5100A, 2.1 VRMS output on 3.5mm jack.
• Connectivity: USB Type-C for power, external WiFi antenna connector.
• Enclosure: Suitable for metal project boxes.
• Software: Supports squeezelite-esp32, ESP8266Audio, web-radio streaming.
• Development: Compatible with PlatformIO and Arduino IDEs.
• Streaming Capabilities: Spotify, AirPlay, Bluetooth, LMS.
• Hardware Details: Schematics and PCB designs are available.

The project is open-sourced under Apache 2.0 license; so you can find all the firmware and design files on its respective GitHub repository.

The device is available at Sonocotta’s Tindie store for $25 with a box and antenna and $20 without the box.

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