AKG K 712 Pro headphones

Impedance	62 Ω
Efficiency	92.9 dB SPL/mW
Frequency Response	10 - 39,800 Hz
Transducer Type	Dynamic
Operating Principle	Open
Ear Coupling	Over-ear
Weight	235 g
Additional Notes
"The K712 PROs are reference, open, over-ear headphones for precise listening, mixing and mastering. The over-ear design guarantees maximum wearing comfort for fatigue-free mixing and mastering, while providing spacious and airy sound without any compromise. Their precise powerful sound results from improved low-end performance by 3dB."

Target SPL Requirements
Target	Power	Voltage
90.0 dB	0.51 mW	0.18 Vrms
92.5 dB	0.91 mW	0.24 Vrms
95.0 dB	1.6 mW	0.32 Vrms
97.5 dB	2.9 mW	0.42 Vrms
100.0 dB	5.1 mW	0.56 Vrms
102.5 dB	9.1 mW	0.75 Vrms
105.0 dB	16.2 mW	1.0 Vrms
107.5 dB	28.8 mW	1.34 Vrms
110.0 dB	51.3 mW	1.78 Vrms

Price History
Current	$339.00
Highest	$488.02
Lowest	$339.00
Search Item	Amazon, eBay

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Rank	Model	Current Price
-	K 121 Studio	$65.00
-	K 171 MKII	$99.99
-	K 240	$67.10
-	K 271 MKII	$122.82
-	K 44 Perception	$174.00
-	K 551	$250.00
#7	K 701	$176.55
#14	K 702	$188.82
#59	K 7XX	$175.00
-	Q701	$350.00