TDA 1540_P vs TDA1540_D

“Do you perhaps have a set of TDA1540D’s for me that sound better than TDA1540P?” would it be…?

Ok then I’ll spend an afternoon sweating in the attic, way too hot, measure bxxxh…:-)

“Heb je voor mij misschien een setje TDA1540D’s  die klinken beter dan TDA1540P”  zou het..?

Ok dan maar middagje zweten op zolder, veels  te warm , meten kreng..:-)

7 different TDA1540s tested for distortion. 61-step sweep (AES 17)

4 x TDA1540D and 3 x TDA1540P

More measurements

• In RED the TDA1540 P – plastic
• in BLUE de TDA5140 D – ceramic