5) The Pi-AMP+ (Legacy product)
The Pi-AMP+ is an add-on accessory for the Legacy Pi-DAC+ / Pi-DAC PRO and Raspberry Pi.
The Pi-AMP+ takes the variable output analog audio from the Pi-DAC+ and through the onboard
Texas Instruments TPA3118D2 Class D amplifier delivers audio to the Pi-AMP+’s speaker terminals
delivering up to 2x35w@19v input.
The Pi-AMP+ requires a 12–19volt power source to operate. Power should be applied via the Pi-AMP
+’s standard barrel connector or the two pin JST socket provided.
The Pi-AMP+, when powered, has been designed to provide power to the Raspberry Pi / Pi-DAC+
and Pi-AMP+ combination safely. You can continue to use your Pi devices without risk of damage. As
with the Pi-DAC+, we’ve focused on the components selected and the attention to audio performance
during PCB layout when developing the Pi-AMP+.
The Pi-AMP+ is by default muted at power on (mute LED lit). Mute state / LED is under software
control (Raspberry Pi GPIO22) but mute may be overridden by shorting the Pi-AMP+’s P9 pins with a
suitable jumper – note the mute LED will remain lit if P9 is shorted.
Pi Power out
12v-19v Power In
Speaker Terminals
!
Audio In (from Pi-DAC+)
Mute Override (P9)
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