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Ways to accept bluetooth, USB, Airplay audio inputs to an Amplifier Answered

Hi
Please don't shoot me for asking this. I am getting confused.
I am building an amp using TA2020, with guidance from datasheet. The input pins accept analog sources.
I would like to know how to add Bluetooth, USB, Airplay input support to the amp, since their output is digital (if i am correct).
Simply by adding different modules, would it suffice?

Now also, where does I2S, DSP fit in.

Thanks

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mpilchfamily

5 years ago

Anything that can output to a small earpiece can be wired to your amps inputs. Audio output to a speaker is always analog. So a bluetooth headset can be modded to connect to your amp. You can take a USB sound card and connect the headphone/speaker output to your amp.

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arjunmenonmpilchfamily

Reply 5 years ago

U made it sound so simple. thanks a lot.

Also, what is i2s. its benefits and where does it fit in. the wikipedia article is nebulous.

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mpilchfamilyarjunmenon

Reply 5 years ago

It's a digital communications protocol. It requires a serial communications chip to use. You could learn more about it and put together an I2C interface for your amp. But then you'll also need to make a DAC (Digital to analog converter). But at this point i think you should keep it simple.