KUlt40UfS5

desktop amplifier

Overview

Desktop Bluetooth amplifier using Texas Instruments' TPA3116 main amplifier chip, (verified)
Bluetooth chip is Jerry's AC6955F multi-function music chip, supports Bluetooth 5.1 music,
USB-DAC, U disk playback (using OTG adapter) micro- TF card playback (not drawn)

The power input interface uses DC-007.
The AUX input uses 3F07 .
Since we plan to use an aluminum alloy casing, we use an external Bluetooth antenna.

The front stage uses ne5532 as preamplifier and isolation.
Most of the circuits use I think HIFI components, no equalization circuit, and
the audio input uses Philips CBB capacitors (for good looks)

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I’m not very good at writing articles, so let’s leave it at that (ฅ•﹏•ฅ)
Thanks to LiChuang EDA, JiLiChuang and LiChuang Open Source Platform. You are welcome to leave a message in the comment area and answer all your questions (•̤̀ᵕ•̤́๑)ᵒᵏᵎᵎᵎ!
Interested friends can also join the communication group QQ: 949337866

Design Files

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Update:2025-06-23 10:52:15

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