The Concept

With the RaspTouch, Audiophonics offers a simple and efficient hardware solution that combines both network drive and DAC. The device offers high quality audio quality through digital-to-analog analog conversion based on an I-Sabre ES9023 V4 DAC.

The Rasptouch allows you to enjoy your favorite music while controlling playback from its 7" touch screen, your smartphone or even your PC. The circuit dedicated to audio file playback works with a Raspberry Pi 4 SBC (Single Board Computer), making Rasptouch a versatile and particularly Open Source solution.

In short, Rasptouch is the combination of cleverly designed ergonomics, versatility and sound performance that ensures high fidelity listening.

Free to choose your operating system

Advertising itself as an Open Source system, RaspTouch is delivered without an operating system. This choice will depend on your equipment, the ambition of your project and the expected functionalities.

The device is electronically ready for use. All that remains is to choose an operating system and mount it on a Micro SD card (sold separately). Many software solutions exist to meet all your expectations: Volumio, piCorePlayer, MoOde Audio, Max2Play, Roon...

Depending on the software chosen, you will be able to access the following features:

• Full and unlimited multiroom support
• Remote playback of audio files stored on a network-connected media server (NAS)
• Remote reading from UPnP source
• Reading from a USB source (hard disk, USB stick)
• DLNA protocol management
• Qobuz support
• AirPlay support

This guide presents some compatible software solutions and their particularities : Start-up RaspTouch - RaspDAC - RaspDAC Mini with a pre-configured image..

The DAC

Based on an ESS ES9023 DAC ESS integrating the HyperStream architecture and capable of converting sampling rates up to 24bit 192kHz, the RaspTouch offers very good sound performance. The DAC ES9023 benefits from advanced technologies and a careful design allowing it to display excellent measurements such as a dynamic range of 112dB. Its high-precision TCXO 0.5ppm clocks and patented Jitter reduction technology ensure a particularly low jitter level.

Connectivity

The RaspTouch I-sabre 9023 V4 offers a simple and efficient connection system that will allow you to fully enjoy your audio system. Thus, we find the connectivity of the Raspberry Pi 4 with 4 USB-A 2.0 ports, a Micro SD port, an Ethernet port and a remote HDMI output. The analog audio output is done on RCA Stereo.

The RaspTouch comes with its power supply, plugging into the 5.5/2.1mm DC jack connector on the back of the unit. The power button on the side allows you to turn off the unit cleanly by turning off the system before turning off the power.