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I can't find many reviews of the newest version of the Geshelli Archel 2.5? Has anyone purchased this amp and what are your thoughts? https://geshelli.com/product/archel-2-5xl/ Cheers

I'm looking at replacing my Topping A50s with the SP400 as a headphone amp/preamp to my speaker amp. I'm curious to know if the input impedance stated by SMSL is real because my DAC (Denafrips Ares II) has oddly high output impedance which doesn't play well with the A50s' strangely low input...

I tried to do an objective test of the ifi iPurifier3 as doing a proper blind ABX listening test would require two of the same DAC. Thought process was sort of stolen from a video made by Passion for Sound where he compared usb cables to each other by recording the DAC output with a USB audio...