How is the sound isolation?

Not good. If you want isolation, try T40RP MK3. They are closed and should provide better isolation and they use the same driver as the T50RP.

Can you compare sound quality to sennheiser momentum 1.0? I am looking for my first open back headphones.

The T50RP is the semi open model and considered the most neutral sounding. The T20RP is the open back model and considered to have the most bass. The T40RP are the closed back model. As other have said an AMP is recommended these require a little power to drive. Probably the most power hungry headphone I've owned.

How hard are they to power? Will fiio x3 (first gen) handle it?

I have a Hiby r3, Hiby r6 Pro and a FIIO X3 II. The FIIO has significantly more power and drives the T50RP rather well. I am modding the T50RP to balanced to see if the Hiby's can provide more juice that way. I don't like running 100% volume for not enough drive strength. FIIO is a strong little bugger!

Can the smsl sd793-ii dac/amp combo power these to a modest level (not painfully high)?

I'm not sure this helps, but I use a Fiio A3 Amp w/ my Fostex... it gives nice even highs/lows amplification. I use it w/ an iPod nano, samsung phone, and nexus tablet... my computer and laptop drive the head phones fine w/o the amp.

Fostex T50rp Mk3 Professional Studio Headphones Semi Open Black

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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Description

🎧 Elevate your sound game — hear every detail, feel every moment.

POWERFUL VERSATILE - Handles up to 3000mW input, perfect for professional mixing, gaming, and high-res audio setups.
COMFORT MEETS ENDURANCE - Low repulsion ear and head pads ensure fatigue-free wear during marathon sessions.
PLUG PLAY FLEXIBILITY - Includes detachable 3m 1/4-inch and 1.2m mini cables for seamless transition between studio and portable use.
PRO GRADE AUDIO PRECISION - Refined Regular Phase diaphragm delivers razor-sharp, studio-accurate sound for critical listening.
SEMI OPEN DESIGN FOR CLARITY - Balanced soundstage with flat, clear audio that keeps you immersed without isolation fatigue.

The Fostex T50RPmk3 headphones feature a proprietary copper foil Regular Phase diaphragm with a powerful neodymium magnet, delivering precise, flat, and clear sound ideal for professional monitoring and audiophile listening. With a maximum input of 3000mW, semi-open design, and ultra-comfortable low repulsion pads, these wired headphones come with detachable cables for versatile studio and portable use. A cult favorite for over 30 years, the T50RPmk3 strikes the perfect balance between comfort, power, and sonic accuracy.

Specifications

ASIN	B0167XM092
Additional Features	Lightweight
Age Range Description	Adult
Antenna Location	Recording
Audio Driver Type	Dynamic Driver
Best Sellers Rank	#92,897 in Electronics ( See Top 100 in Electronics ) #1,817 in Over-Ear Headphones
Brand	Fostex
Brand Name	Fostex
Built-In Media	Cable
Cable Features	Detachable
Color	Black
Compatible Devices	Devices with 3.5 mm audio jack or detachable cable support
Connectivity Technology	Wired
Control Method	Remote
Customer Package Type	FFP
Customer Reviews	4.5 out of 5 stars 329 Reviews
Ear Placement	Over Ear
Earpiece Shape	Round
Enclosure Material	Copper
Form Factor	Over Ear
Frequency Range	15 Hz - 35,000 Hz
Global Trade Identification Number	00636827306119
Headphone Folding Features	Over Ear
Headphone Jack	3.5 mm Jack
Headphones Ear Placement	Over Ear
Headphones Jack	3.5 mm Jack
Is Autographed	No
Item Weight	11.36 ounces
Manufacturer	American Music and Sound
Model Name	T50RP MK3
Model Number	AMS-T50RPMK3
Noise Control	None
Number of Items	1
Series Number	50
Specific Uses For Product	Professional
Style Name	T50RP MK3
Theme	Studio Headphones, Professional Recording
UPC	636827306119
Unit Count	1.0 Count
Warranty Description	1 year.
Water Resistance Level	Not Water Resistant

Reviews

D**E

28.03.2021

A**R

14.06.2016

A**R

27.07.2016

I**T

21.06.2016

I**V

15.06.2018

T**Y

31.01.2017

A**R

3.12.2016

R**N

17.05.2018

G**E

20.06.2024

C**R

3.06.2020

M**N

14.11.2017

R**N

7.10.2018

T**P

4.11.2022

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Fostex T50RP MK3 Professional Studio Headphones, Semi-Open,Black

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Description

Specifications

Reviews

Common Questions