Will this board supply power back to the Raspberry Pi through the 50 pin connector?

Yes, the board has a step down converter (MP2403) that powers the Pi through the GPIO connector (which is 40 pins...) I power mine with a 19v laptop supply and it works very well.

How does this interface with the pi? i2c/spi something else?

hi，Glad to answer your question：The Amp works with all Raspberry Pi models with the 40-pin GPIO connector，uses IIC PINS， you can see the detail of the TAS5713PHPR

Will not be used with pi. need to know which pins accept i2s input. can i download user manual?

Manual can be found here http://www.inno-maker.com/product/hifi-amp-hat/ and it does list the pin usage.

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RPI HiFi AMP HAT TAS5713 Amplifier Audio Module 25W Class-D Power Sound Card Expansion Board for Raspberry Pi 5 4 3 B+ Pi Zero Nichicon Capacitor

Product ID: 73644315

Details

Audio Output Mode
Stereo
Brand
innomaker
Hardware Interface
PCI Express x1
Platform
Linux

⚡Up to 90% Efficiency

🎧Supports 4Ω Speakers

🔊25W Class-D Power

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Details

Audio Output Mode
Stereo
Brand
innomaker
Hardware Interface
PCI Express x1

Description

🎶 Elevate your Raspberry Pi audio game—because your ears deserve the best!

WIDE AUDIO SUPPORT - Handles input from 8KHz to 48KHz and supports DSD over PCM (DoP) for high-res playback.
AUDIOPHILE GRADE SOUND - TAS5713 chipset delivers low distortion, crystal-clear stereo output.
PLUG PLAY HI FI UPGRADE - Seamlessly connects via 40-pin GPIO—no cables or soldering needed.
OPTIMIZED POWER EFFICIENCY - Class-D amplifier runs cool and efficient, maximizing sound with minimal energy waste.
UNIVERSAL RASPBERRY PI COMPATIBILITY - Works flawlessly with Pi 5, 4, Zero, 3B+ and all major music OS platforms.

The RPI HiFi AMP HAT is a 25W Class-D digital amplifier designed for Raspberry Pi models 5, 4, Zero, and 3B+. Featuring the TAS5713 chipset, it delivers high-fidelity, low-distortion stereo sound with up to 90% efficiency. Compatible with popular music player OSes and supporting a wide audio frequency range, this plug-and-play expansion board transforms your Pi into a premium audio powerhouse without any soldering or extra cables.

Specifications

ASIN	B07CZZ95B9
Audio Output Mode	Stereo
Best Sellers Rank	#72,662 in Electronics ( See Top 100 in Electronics ) #445 in Audio Component Amplifiers
Brand	innomaker
Compatible Devices	Raspberry Pi 5, Raspberry Pi 4, Raspberry Pi Zero, Raspberry Pi Zero W, Raspberry Pi 3B, Raspberry Pi 3B+ Compatible Devices Raspberry Pi 5, Raspberry Pi 4, Raspberry Pi Zero, Raspberry Pi Zero W, Raspberry Pi 3B, Raspberry Pi 3B+ See more
Customer Reviews	3.9 out of 5 stars 176 Reviews
Hardware Connectivity	PCI Express x1
Hardware Interface	PCI Express x1
Hardware Platform	Raspberry Pi
Manufacturer	innomaker
Maximum Sample Rate	48 KHz
Mfr Part Number	RPI-HIFI-AMP
Model Number	RPI-HIFI-AMP
Platform	Linux
Signal-to-Noise Ratio	100 dB
Surround Sound Channel Configuration	2.0
UPC	606462078979
Unit Count	1.0 Count

Reviews

R**Y

22.11.2025

S**O

6.05.2024

J**.

11.03.2023

C**N

26.10.2025

J**A

10.07.2025

A**R

15.01.2021

Y**H

1.10.2019

N**Y

27.08.2024

R**G

13.05.2020

M**.

31.01.2026

R**T

21.04.2021

S**N

17.09.2025

G**E

6.02.2022

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