Considering picking up a used HE6. Is this a significant upgrade? What improvements can I expect? Amplifier power is not a concern.

I want to connect my HiFiMan HE-560 headphones to my 2A3 tube amps. I've been reading the following article, but need help determining the correct values for the resistor network. The HE-560 have an impedance of 56 ohms. My amps have 4, 8 and 16 ohm taps on the output transformer. Any assistance...

Who makes DAC/Preamp combos? Under $500 would be preferred - new or used. This would go upstream of a pair of 2A3 tube monoblocks, and be fed by both laptop and a CD transport. Listening through HiFiMan HE-560

I came across an interesting article: https://www.kenrockwell.com/apple/lightning-adapter-audio-quality.htm Any comments?

How do I connect my headphones to the speaker taps on a pair of monoblock amplifiers?

I have a question about pads. I bought my pair of Hifiman HE-400S used, and they came with angled (tapered) velour pads which are fairly soft and very comfortable, but they were starting to show signs of wear. I ordered a new set of velour pads direct from HiFiMan, but they are not tapered, and...

I've searched the various forums here, but there are not many recent threads on this topic, and there are lots of new amps out there. What are recommendations for K601 phones at 120 ohms? Thanks, JD