Wanting to make a comparison between class H and class D I asked ChatGPT what he thought and this is what he answered me, do you agree or do you think ChatGPT is talking nonsense?
However:
Class H for HiFi/Hi-End
Advantages:
- Superior Audio Quality:
- Class H amplifiers maintain a linear approach similar to Class AB, offering more natural and detailed sound quality.
- Ideal for critical listening, where fidelity and sound transparency are essential.
- Improved Dynamics:
- The ability to manage variable supply voltage reduces distortion during signal peaks, resulting in more dynamic playback.
- Good Efficiency:
- While not as efficient as Class D, the energy efficiency is sufficient to handle high-power systems without excessive heat dissipation.
Disadvantages:
- Higher heat dissipation compared to Class D, which may require adequate cooling.
- More complex than traditional Class AB, potentially increasing costs.
Recommended for:
- Home HiFi audio systems: where a balance between quality and power is desired.
- Fans of classical music, jazz, or genres that demand precision and detail.
Class D for HiFi/Hi-End
Advantages:
- Very High Efficiency:
- Class D consumes less energy and generates less heat, allowing for more compact and lightweight designs and greater energy sustainability.
- Modern Advances in Audio Quality:
- Thanks to advanced technologies and better filters, modern Class D amplifiers deliver audio quality very close to that of linear amplifiers.
- Particularly suitable for subwoofers and multichannel systems that require high power.
- Versatile Design:
- Ideal for more compact setups, such as powered speakers or integrated devices.
Disadvantages:
- Potentially lower audio quality than Class H or AB, especially in mid-to-high frequencies, due to PWM modulation and output filters.
- Some audio purists perceive a "coldness" or lack of warmth in the playback typical of Class D.
Recommended for:
- Multichannel or Home Theater systems: where high efficiency and compactness are required.
- Modern audio systems: such as active speakers or audio setups in small spaces.
Conclusion
For a HiFi/Hi-End system, I would generally recommend a Class H or Class AB amplifier, as these classes offer superior audio quality with more natural and detailed sound reproduction, which is often a priority for audiophiles.However:
- If you need a compact, energy-efficient setup, or for modern applications (e.g., active speakers), Class D can be a viable choice, especially with today’s high-end technologies.
- For genres like electronic music or environments where power is more important than extreme fidelity, Class D excels.