pffb

This is a review and detailed measurements of the O-NOORUS D4 stereo integrated amplifier. It was sent to me by the company and costs US$139 from them direct with the 48V/5A power brick. It is fundamentally a small box TPA3255 design with PFFB to give a flat response into any load, but it has...

Dear FMs, This is "User Impressions, Observations and Owners Thread" for O-Noorus D4 Amplifier (or Stereo Receiver, as has ESS 9023P based DAC as well). While we await if and when D4 get's measured on ASR, this thread hopefully will capture available details, features, internal pics, quick...

If you take the different power output options (through internal or external PSUs) off the table, do the current Class D chip amps measure up to a Hypex Ncore? Will a TPA3255+PFFB sound the same top-to-bottom as a NC252MP at 2 watts with a 4-ohm speaker? Or is there still something...

Hi Amigos: It has been for around 2 years after we release TPA3251 and TPA3255 series amplifier DIY kits with post filter feedback design that improve the overall performance of the single chip itself. With many buyers(diyer) enjoyed our diy kits and having so many fun from their own diy...

Hi amigos, I'm coming back to the forefront with a new project. This time I focused on the Sylph Audio FB100 module, based on a TPA3251 and an advanced implementation of the PFFB. Voltage Gain is factory set @ 14dB (5V/V) on this module. So I intended to couple it to my DAC SMSL D6s which has...