I own the Bang & Olufsen (B&O) Play H6 2nd generation headphones. I can't find any official specs regarding impedance or sensitivity. Some web site declare 30 ohms impedance and 97 dB sensitivity. Measurements at Innerfidelity show the following results:
I use a MacBook Pro as source and I seldom go beyond 50% volume. Usually I listen at 30% volume which is loud enough for me with these headphones.Impedance: 38 ohms (min: 35 ohms)
Volts RMS required to reach 90dB SPL: 0.045 Vrms
Power Needed for 90d BSPL: 0.05 mW
What's the best LD amp match for these headphones, I+ or MKII ?
Thanks in advance!