Yeah, it’s interesting because the bridged design has an “underpowered” power supply and hifinews said worse 2 ohm and 1 performance compared to the PM-KI Ruby. I really believe they made that decision for better real-world performance.
Marantz marketing: “However, in order to bring out the potential of this excellent power amplifier and realize the sound and quality that Marantz aims for, there are various adjustments to the switching amplifiers - mounting position, accuracy, thermal management, and
noise control. So, it took a lot of effort.
The PM-10 was completed after a development period of nearly three years, twice as much as usual, but much of that time was spent to bring out the potential of the switching amplifier.”
No extra LPF filter in the measurements shown. I run the UB9000 into the PM-10 and use the PM-10's volume control to control the wattage into a pair of Vishay Dale 1% non inductive resistors. It's also possible that a HDAM SA3/pre-amp component/or Marantz buffer is doing something too. It was this review that made me realize that the buffer can improve measurements, not just improve gain.
I am not sure anyone else has shipped a bridged HypeX amp. Seems like it would get better measurements and you can sell 2x the amps to a single customer and be an interesting thing for
@Rick Sykora to try out? That said, for all we know, maybe the NCx500 does well --
@amirm, can you run one of those 1M bandwidth measurements?...