are these compatible with iphones (5 or 6) and samsung galaxy phones?

These are true studio monitor headphones! They have no inline controls and a long, straight, somewhat heavy cable with a heavy metal 1/4" phono connector. So, although they will work with ANY phone, they are not the best suited to portable use. They don't fold up and you'll need an adapter to plug them into your phone (they don't come with one, or anything else for that matter). They also have fairly flat frequency response; for most people this is experienced as cold, "sterile" sound with not enough bass! If you are set on these, might I suggest the MDR-7506 model. They are almost identical physically, but fold up, have a coiled (but still heavy) cord and a "warmer" more pleasing sound. They also come with an integrated mini phone adapter (just unscrew the 1/4" connector!) Still, not the most portable and no inline controls, but you'll save some money and probably like them better.

Is it possible that after 10-hour flight bass become weaker? Thank you.

Weaker? No. I have owned 3 pairs in my life over the last 2 decades. Highly doubt this will happen in a 10 hour time period but over time, the pads can flatten and therefore the drive becomes just a half-millimeter to one millimeter closer to your ear causing it to sound like there is less bass and more prominent mids and highs. I say this because when my pads deteriorate over time and I've bought new stock pads, It sounds like the highs become slightly recessed making it sound like there is more bass.

Mdr Cd900st Studio Monitor Stereo Headphones

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2058.55 DT

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Sold byAmazon TunisiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🎙️ Elevate your sound game with the studio legend you can’t afford to miss!

STUDIO GRADE PRECISION - Trusted by top recording studios for unmatched audio accuracy.
COMFORT MEETS DURABILITY - Lightweight 200g design with customizable ear pads for marathon sessions.
EXTENDED FREQUENCY RANGE - Hear every detail from 5 Hz deep bass to 30,000 Hz crisp highs.
CLASSIC WIRED RELIABILITY - 2.5m tangle-free cable ensures uninterrupted, latency-free monitoring.
ICONIC PROFESSIONAL LEGACY - The go-to reference headphone for seasoned audio pros and discerning millennials.

The Sony MDR-CD900ST Studio Monitor Stereo Headphones deliver professional-grade sound accuracy with a 40mm dynamic driver and a wide 5 Hz to 30,000 Hz frequency response. Designed for recording studios, these lightweight, wired headphones feature a 2.5m tangle-free cable and 1000mW max input power, making them the trusted choice for audio professionals seeking precise, reliable monitoring.

Specifications

ASIN	B000UPEJCU
Additional Features	Lightweight
Age Range Description	Adult
Antenna Location	Recording
Audio Driver Size	40 Millimeters
Audio Driver Type	Dynamic Driver
Best Sellers Rank	#191,529 in Electronics ( See Top 100 in Electronics ) #3,014 in Over-Ear Headphones
Brand	Sony
Built-In Media	Cable
Cable Features	Tangle Free
Color	Black
Colour	Black
Compatible Devices	Wired Devices
Connectivity Technology	Wired
Control Method	Remote
Control Type	Media Control
Controller Type	Touch
Customer Package Type	Standard Packaging
Customer Reviews	4.4 out of 5 stars 1,470 Reviews
Ear placement	Over Ear
Earpiece Shape	Over Ear
Enclosure Material	Format: Sealed dynamic type driver unit: 40mm, dome type (CCAW adopted) Maximum input: 1,000 mW, impedance: 63Ω, sound pressure sensitivity: 106dB/mW Playback frequency: 5 ~ 30,000 Hz, Cord Length: (without cord) about 200g: about 2.5m, Plug: stereo standard plug, mass
Form factor	On Ear
Frequency Range	5 Hz - 30,000 Hz
Frequency Response	30000 Hz
Headphone Folding Features	On Ear
Headphone Jack	3.5 mm Jack
Headphones Ear Placement	Over Ear
Impedance	63 Ohms
Is Autographed	No
Item Weight	290 Grams
Manufacturer	Sony
Model Name	MDR-CD900ST
Model Number	MDR-CD900ST
Noise Control	None
Noise control	None
Number of Items	1
Series Number	900
Specific Uses For Product	Recording
Style Name	Modern
Subject Character	no character
Theme	Professional Equipment
Water Resistance Level	Not Water Resistant
Wireless Technology	Fully Wireless

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