Comparison A4Tech MK-690 vs A4Tech MK-650

Clear Table
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	A4Tech MK-690	A4Tech MK-650
	from $4.56 up to $7.44 Outdated Product	from $15.00 Outdated Product
all specs only differences
TOP sellers	Find prices on Amazon.com Find prices on eBay.com	Find prices on Amazon.com Find prices on eBay.com
Connection and design
Design	in-ear	in-ear
Connection type	wired	wired
Connection	mini-Jack (3.5 mm)	mini-Jack (3.5 mm) /gilded/
Plug	straight	straight
Cable supply	dual-sided	dual-sided
Cable length		1.4 m
Cable type	round	round
Specs
Impedance	32 Ohm	32 Ohm
Frequency range	20 – 20000 Hz	20 – 20000 Hz
Sensitivity	102 dB	102 dB
Speaker size	10 mm	10 mm
Emitter type	dynamic	dynamic
General
Weight	14 g	14 g
In box	silicone tips	silicone tips
Color
Added to E-Catalog	december 2010	october 2009

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Cable length

The length of the cable supplied with the headphones with the appropriate connectivity.

The optimal cable length depends on the planned format of the "ears". So, for pocket gadgets, 1 metre or less is often enough, for a computer it is already desirable to have a wire for 1 – 2 m, and preferably 2 – 3 m. And models with a longer cable length — 3 – 5 m or even more — are mainly designed for specific tasks, such as connecting to a TV or using in recording studios.

Recall that in some models the cable is removable (see below) and can be replaced if necessary with a longer or shorter one. Also note that there are extension cables that allow you to increase the length of the main wire; such a cable may even be included in the delivery, this point (and the length of the additional cable) is usually specified in the notes.