Merge pull request #2643 from raspberrypi/LizUpton-patch-4

Style

Author: Alasdair Allan

documentation/asciidoc/accessories/iqaudio/digiamp_plus.adoc

@@ -1,22 +1,22 @@
 === Raspberry Pi DigiAMP{plus}
 
-With Raspberry Pi DigiAMP{plus}, you can connect passive stereo speakers up to 2x35W with variable output, making it ideal for use for Raspberry Pi based Hi-Fi systems.
+With Raspberry Pi DigiAMP{plus}, you can connect passive stereo speakers up to 2x35W with variable output, making it ideal for use in Raspberry Pi-based hi-fi systems.
 
-DigiAMP{plus} uses the Texas Instruments TAS5756M PowerDAC and must be powered from an external supply. It requires a 12-24V DC power source (XP Power VEC65US19 power supply is recommended).
+DigiAMP{plus} uses the Texas Instruments TAS5756M PowerDAC and must be powered from an external supply. It requires a 12-24V DC power source (the XP Power VEC65US19 power supply is recommended).
 
 image::images/DigiAMP+_Board_Diagram.jpg[width="80%"]
 
 DigiAMP{plus}’s power in barrel connector is 5.5mm x 2.5mm. 
 
 At power-on, the amplifier is muted by default (the mute LED is illuminated). Software is responsible for the mute state and LED control (Raspberry Pi GPIO22).
 
-DigiAMP{plus} is designed to provide power to the Raspberry Pi and DigiAMP{plus} together in parallel, delivering 5.1V at 2.5Amp to the Raspberry Pi through the GPIO header.
+DigiAMP{plus} is designed to provide power to the Raspberry Pi and DigiAMP{plus} together in parallel, delivering 5.1V at 2.5amp to the Raspberry Pi through the GPIO header.
 
-WARNING: DO NOT APPLY POWER TO THE RASPBERRY PI’s OWN POWER INPUT WHEN USING DIGIAMP{plus}.
+WARNING: Do not apply power to the Raspberry Pi's own power input when using DigiAMP{plus}.
 
 ==== Pinouts 
 [cols="1,12"]
 |===
-| *P5* | Alternative power input for hard wired installations (Polarity must be observed).
+| *P5* | Alternative power input for hard wired installations (polarity must be observed).
 | *P8* | TAS5756m Internal GPIO1/2/3
 |===