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There seems to be a lot of different info about the sensitivity of the HD600 - but this seems to be the right info:
HD800S => 300 ohm, sensitivity 102 dB (1 Vrms) or approx 97 dB/mW SPL
HD600 => 300 ohm, sensitivity 102 dB (1 Vrms) or approx 97 dB/mW SPL
As I have both, it was pretty simply to perform a rough measurement with an SPL meter.
Driven from the VE Enterprise (tube amp) to ensure adequate voltage .....
I used test tones (1 kHz) and set the tube amp to output an 85 dB pure tone on the HD600. I then set the HD800s up exactly the same. The HD800S measured at just under 89 dB.
Of course this is pretty hard to get 100% accurate because I don't have a dummy head, and the HD600S sealed a little better on the rig I was using.
It indicates to me they are both pretty close though in terms of volume output. I wouldn't be concluding from this that the HD600 is "much easier to drive".
HD800S => 300 ohm, sensitivity 102 dB (1 Vrms) or approx 97 dB/mW SPL
HD600 => 300 ohm, sensitivity 102 dB (1 Vrms) or approx 97 dB/mW SPL
As I have both, it was pretty simply to perform a rough measurement with an SPL meter.
Driven from the VE Enterprise (tube amp) to ensure adequate voltage .....
I used test tones (1 kHz) and set the tube amp to output an 85 dB pure tone on the HD600. I then set the HD800s up exactly the same. The HD800S measured at just under 89 dB.
Of course this is pretty hard to get 100% accurate because I don't have a dummy head, and the HD600S sealed a little better on the rig I was using.
It indicates to me they are both pretty close though in terms of volume output. I wouldn't be concluding from this that the HD600 is "much easier to drive".