HiFiBerry DAC+ ADC Pro combines our well-known DAC+ Pro with an analogue input. Both input and output support sample rates up to 192kHz. Note that you might need to update your Linux kernel to support the audio input features (at least Raspberry Pi kernel 4.19.60) The HiFiBerry DAC+ ADC Pro is a high-resolution digital-to-analog and analog-to-digital converter for the Raspberry Pi (newer models with 40 pin GPIO connector). This is a special sound card for the Raspberry Pi, optimised for one specific use case: the best audio playback and recording quality. It is specifically designed for applications that do not only need playback, but also recording functionalities. FACTS Stereo input and output Dedicated 192kHz/24bit high-quality Burr-Brown DAC Dedicated 192kHz/24bit high-quality Burr-Brown ADC Hardware volume control for DAC and ADC. You can control the input and output parameters using “alsamixer” or any application that supports ALSA mixer controls. Connects directly to the Raspberry Pi, no additional cables needed No soldering, comes as a pre-fabricated kit. You just plug it onto the Raspberry Pi, it is conform to the Raspberry Pi hardware-attached-on-top (HAT) specification. Compatible with all Raspberry Pi models with a 40-pin GPIO connector Directly powered from the Raspberry Pi, no additional power supply Three ultra-low-noise linear voltage regulators for optimal audio performance Low-jitter dual-domain clock for optimised clock decoupling from the Raspberry Pi Mic bias voltage for the use with electret microphones No anti-aliasing filter in the input path for best recording bandwidth HAT compliant, EEPROM for automatic configuration Gold plated RCA output connectors Comes with all components required to mount it. We include 4 M2.5x12mm spacers to fix the board onto the Raspberry Pi Audio input might require Linux kernel update (at least version 4.19.60) HARDWARE Note that the actual board might look a bit different. Layout and components might change without further notice. We do not guarantee a specific PCB layout or specific components. CONNECTORS AND JUMPERS 1 Analog input 2 Analoge output 3 Analog output 4 I2S data (not for end users) 5 Microphone bias jumper (you need to close both jumpers to provide a microphone bias voltage) 6 Analog input BALANCED/UN-BALANCED INPUT CONNECTOR J4 This 6-pin connector can be used to connect a balanced input (e.g. XLR or 6.5mm jacks). Pin 1 is on the left bottom corner. in R- 1 2 in R+ GND 3 4 GND in L+ 5 6 in L- OUTPUT CONNECTOR P5 This connector can be used to connect to external components, e.g. an amplifier. The output is connected in parallel to the RCA jacks. Pin 1 is on the top left. +5V 1 2 R GND 3 4 GND +5V 5 6 L SPECIFICATIONS Maximum input voltage 2.1Vrms 4.2Vrms for balanced input Maximum output voltage 2.1Vrms ADC signal-to-noise ratio 110db typical DAC signal-to-noise ratio 112db typical ADC THD+N -90db typical DAC THD+N -93db typical Frequency response 10Hz-70kHz (-3dB) Input gain -12db to 32dB Power consumption
