a chinese amp balancedin board

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ejaouen

Member
Joined 2007
ponctey.fr
Hi is there any classD chinese chipamp board featuring (differential) balanced input (preferably simply implemented as featured in the chip differential inputs) ?
I mean many monolithic amp ICs have differential inputs but often boards using them omit the differential input scheme ?
In fact I just want differential input but without adding opamp summung or additional stages ....
thanks
 
R

ravels

Member
Joined 2016
The cheapest ones I know of are these mono amps:

TPA3116 Mono Channel Digital Power Audio Amplifier Board BTL Out 100W DC 12V-24V | eBay


If you are looking for something with more power:

TDA8950-2x170W-Digital-Subwoofer-Class-D-Audio-Amplifier-Board - AliExpress

or even more power:

TDA8954-2x210W-Class-D-Amplifier-Board - eBay


This TDA7498E board also provides access to differential inputs but you have to remove R20 and R21:

TDA7498E-160W-160W-High-Power-digital-stereo-amplifier-board - AliExpress

On many other boards, you can get to the differential inputs to the chip by locating the bypass capacitors and removing some resistors.
 
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