staticV3
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Fwiw, my listening volume with the HD600 (1dB/Vrms less sensitive as measured by Amir) is 0dBFS=58mVrms, meaning that with the HD650 I'd need about 51mVrms.
I set up a level-matched A/B comparison with the A2049 and a 9038SG3 capable of 3.4Vrms using an MC103. That means that I could seamlessly switch between the two.
I found no difference whatsoever in dynamics, bass response, or any other aspect of sound quality.
With that in mind, I'd err to the side of caution when people claim that you need an Amp with at least x Vrms to unlock a headphone's true potential, at least when it comes to high impedance ones.
If it's loud enough with your current Amp, then you won't gain anything by getting a more powerful one and running it at 20% or so.
I set up a level-matched A/B comparison with the A2049 and a 9038SG3 capable of 3.4Vrms using an MC103. That means that I could seamlessly switch between the two.
I found no difference whatsoever in dynamics, bass response, or any other aspect of sound quality.
With that in mind, I'd err to the side of caution when people claim that you need an Amp with at least x Vrms to unlock a headphone's true potential, at least when it comes to high impedance ones.
If it's loud enough with your current Amp, then you won't gain anything by getting a more powerful one and running it at 20% or so.
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