jcx
Headphoneus Supremus
- Joined
- Jul 24, 2002
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its easy to wrong when manufacturers are changing sensitivity reference from dB/mW to dB/V - and not indicating which they're using
I believe K701 are 93 dB/mW - making them less sensitive than HD600/650 @ 97/8 dB/mW
the differing impedance however puts the dB/V numbers as you have them
it takes ~3x the power to drive the K701 to the same loudness as the HD600/650 - even though they require similar V
an amp for the K701 has to have that much more current output to drive them without distortion - as well as more V swing than most 32 Ohm (Grado) optimized amps
so people should quit recommending the Gilmore Lite for K701 - since it was designed for Grado load/sensitivity it doesn't have the Vswing
I believe K701 are 93 dB/mW - making them less sensitive than HD600/650 @ 97/8 dB/mW
the differing impedance however puts the dB/V numbers as you have them
it takes ~3x the power to drive the K701 to the same loudness as the HD600/650 - even though they require similar V
an amp for the K701 has to have that much more current output to drive them without distortion - as well as more V swing than most 32 Ohm (Grado) optimized amps
so people should quit recommending the Gilmore Lite for K701 - since it was designed for Grado load/sensitivity it doesn't have the Vswing