QRV-09 - The ultra high performance SMD headphone amplifier
Click on the picture to see a larger view of the pcb.
The performance is outrageous in headphone amp terms. See the technical data!
- The pcb fits virtually any single opamp
- Room for good coupling caps (if you must or like).
- Input LP-filter if you have problems with RF interference (you should have a filter though).
- High speed and high performance SMD current feedback amp as output stage.
- No global feedback.
- High quality power supply with large smoothing caps and transformers on the pcb.
- Separate voltage regulators for each channel.
- Fits any headphone.
My design goal was to take out most of the performance of the TPA6120 and when I listen to the amp I think I have succeeded.