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View Full Discussion Any amp recommendations for the hd58x? I dont see any particular amps mentioned on forums/reviews for the hd58x and hd660s, both 150ohm.
With the hd6xx/hd650 theres a strong recommendation for the darkvoice/bottle head/other high output impedance amps. For grados/other low impedance cans low output impedance amps are recommended (little dot 1+/magni 3). But no one mentions amps that have output impedances that match the 150ohm headphones. Going by the 1/8th rule the output impedance should be around 18.75. For example, schiit valhalla is rated at 14ohm output impedance.
I'm currently using my hd58x with a darkvoice and it sounds nice, but it makes me wonder how they'd sound with an impedance matched amp. Would there be better synergy? Am I missing something? Do I need to buy a third amp (currently DV and LD1+)?! etc....
There are a couple forum threads with people asking about this question, but none of the answers were particularly helpful.
I found a review that listed the output impedance of a bunch of other amps too:
they sound really good out of a DV, just like the 6XX. They like OTL amps. They sound much better on the DV then my Magni 3.