答：都是AB類功放，但是功率不同。TDA2030是14w AB類功放，TDA2030A是18w AB類功放。具體差異請參考如下資料，建議找這兩顆IC的datasheet對照。TDA2030：14W Hi-Fi AUDIO AMPLIFIERIC描述：The TDA2030 is a monolithic integrated circuit in Pentawatt® package, intended for use as a low frequency class AB amplifier. Typically it provides 14W output power (d = 0.5%) at 14V/4W; at ± 14V or 28V, the guaranteed output power is 12W on a 4W load and 8W on a 8W (DIN45500).TDA2030A ：18W Hi-Fi AMPLIFIER AND 35W DRIVERIC描述：The TDA2030A is a monolithic IC in Pentawatt [package intended for use as low frequency class AB amplifier.With VS max = 44V it is particularly suited for more reliable applications without regulated supply and for 35W driver circuits using low-cost complementary pairs.
答：都是AB類功放，但是功率不同。TDA2030是14w AB類功放，TDA2030A是18w AB類功放。具體差異請參考如下資料，建議找這兩顆IC的datasheet對照。TDA2030：14W Hi-Fi AUDIO AMPLIFIERIC描述：The TDA2030 is a monolithic integrated circuit in Pentawatt® package, intended for use as a low frequency class AB amplifier. Typically it provides 14W output power (d = 0.5%) at 14V/4W; at ± 14V or 28V, the guaranteed output power is 12W on a 4W load and 8W on a 8W (DIN45500).TDA2030A ：18W Hi-Fi AMPLIFIER AND 35W DRIVERIC描述：The TDA2030A is a monolithic IC in Pentawatt [package intended for use as low frequency class AB amplifier.With VS max = 44V it is particularly suited for more reliable applications without regulated supply and for 35W driver circuits using low-cost complementary pairs.