I had a P-300 power plant - their first regenerator. Class AB power supply and balanced at the output outlets. It was excellent. It eventually failed after several years. I then bought a P500 that didn't not have an class AB power supply nor was it balanced. I didn't think it sounded as good as the P300. the P500 failed after 2 years. I bought a Power Plant Premier, It was better than the P500, but still not balanced, not class AB and didn't sound as good as the P300. I can't speak for the newer class of regenerators.
I have a BHK 250. It appears to be very well built and sounds superb in my system. I am very happy with it.
I have a BHK 250. It appears to be very well built and sounds superb in my system. I am very happy with it.