Will everyones ears fit into these? I like Astro

My family stood side-by-side, ear-to-ear so we could all listen, but the headphones were too small to Fit “everyone’s ears into these”...plus my daughters ears get pretty waxy so the sound quality playing out of her ear hole would have been muffled.

What is the difference between the 250 ohm and 32 ohm models?

The Ohm is the unit of electrical impedance. It's a measure of how difficult it is for current to flow through the conductor. A conductor with a higher impedance will require a higher voltage to push an equivalent current level through it than one with a lower impedance. A 10-volt source can drive 40 milliamps (.04 amps) through a 250 Ohm impedance, but you only need a 1.5V battery to push 47 milliamps through a 32 ohm impedance. This is why 32 Ohm headphones are recommended for portable equipment (phones, etc), where low-voltage battery sources are common. A 600 Ohm headphone is more appropriate for studio work, where the amplifier driving them often uses +/- 15 volts (a 30 volt swing). A 250 ohm headphone is one that attempts to bridge both worlds - low enough to be used with battery powered sources, but "stiff" enough (electrically) to take advantage of the benefits that a big voltage swing provides, such as a higher s/n ratio. A lower impedance headphone (everything else being equal) does NOT require less power to use. In fact, it requires slightly more. But you do not want to use a 600 ohm set of headphones (in general) with a low-voltage amp such as one the one in your phone or laptop. Generally, they will not play as loudly, as they will require more current than the amplifier can provide into the higher impedance.

ASIN	B07DHXBMJD
Age Range (Description)	Adult
Audio Driver Type	Dynamic Driver
Best Sellers Rank	#64,910 in Electronics ( See Top 100 in Electronics ) #1,564 in Over-Ear Headphones
Cable Feature	Tangle Free
Compatible Devices	Music Production Equipment, Laptops, Desktops, Tablets, Cellphones, Car Audio Systems
Connectivity Technology	Wired
Control Method	Remote
Control Type	Noise Control
Customer Package Type	Standard Packaging
Customer Reviews	4.5 4.5 out of 5 stars (2,137)
Date First Available	June 4, 2018
Earpiece Shape	Over-Ear
Global Trade Identification Number	04010118717888
Hardware Interface	3.5mm Audio
Headphones Jack	3.5 mm Jack
Included Components	1/4" to 3.55mm Gold plated Adapter, Hardshell carrying case, beyerdynamic DT 990 Premium - 250 OHM Black Edition
Input Device Interface	3.5mm Audio Jack
Is Discontinued By Manufacturer	No
Item Weight	1 pounds
Item model number	717886
Manufacturer	beyerdynamic
Material	Plastic
Model Name	DT 990 Premium
Noise Control	Active Noise Cancellation
Noise Control Features	active noise cancellation
Number of Items	1
Product Dimensions	7 x 4 x 8.5 inches
Sensitivity	96 dB
Series Number	717886
Special Feature	Lightweight, Noise Isolation, Tangle Free Cord
Style	DT 990 Black Special Edition, 250 Ohm
Supports Bluetooth Technology	No
Unit Count	1.0 Count
Water Resistance Level	Not Water Resistant

Beyerdynamic DT 990 Premium Open-Back Over-Ear Hi-Fi Stereo Headphones

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