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Class D Switching Power Amplifiers and Power D/A conversion

TDA7498 vs TK2050??
TDA7498 vs TK2050??
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Old 22nd April 2019, 02:57 AM   #1
audiocats is offline audiocats  United States
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Default TDA7498 vs TK2050??

I only have experience with the tripath stuff, and am curious about the TDA7498..... how does it sound compare to a tripath such as TK2050?
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Old 22nd April 2019, 01:31 PM   #2
FauxFrench is offline FauxFrench  France
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Location: The mountains, calm and quiet.
I know this is not what you hoped to hear. I have both a TDA7498E board and a TK2050 board (using STA508 instead of TP2050). Both sound very good. I cannot identify clear sound differences.
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Old 26th April 2019, 03:06 AM   #3
audiocats is offline audiocats  United States
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Thanks, do both boards have the same or similar input (volume control, input cap) and output-filter stage?
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Old 26th April 2019, 07:21 PM   #4
FauxFrench is offline FauxFrench  France
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Location: The mountains, calm and quiet.
My TDA7498E board I left almost as I received it. It had a volume potentiometer, a heatsink with a temperature controlled fan and a decent output filter. I noticed no real needs for modification.
The TK2050 board had a price close to the other. But, it had no volume potentiometer and the heatsink was close to insufficient. The heatsink quickly got to 50-60 degrees with 36V supply and heated the capacitors nearby. Class T has a variable and typically higher carrier frequency which causes further heating.The output filter coils were insufficient for the power it can deliver. So, I did rather a rebuild of that board. In the end it worked very well.
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