Will these work with the ath-m40x?

No, the shape is too different.

What is the advertised battery life of this product?

It may say 5, or 6 hours, but real world usage (between 75-95% volume) while at the gym using Spotify, I feel LUCKY if I get even 2 hours out of the battery before it dies. I thought I had a faulty unit and have since ordered this product twice and it always ends up the same; at first I can get 2.5-3 hours maximum out of the battery, and after about 4-5 weeks of use I am lucky if I get even 120 minutes of music playback before it’s dead. By the end of 2 months it’s down to about 60 minutes at 90% volume before it shuts off. Yes I’ve tried resetting the battery as if it were an old school unit, and never let it drain entirely for the first 2 months, heck I even tried draining it entirely and doing a batter reset on it and it all makes zero difference. 60-90 minutes of battery on all 3 units after the first month. (Verified purchaser because, like I said, I bought 3 because I didn’t want to believe the product was as crappy as it really was.)

will these work with ATH-M70x ?

They should work on the M70x. They both use a 45mm diaphragm, I assume the housings are the same. I have a pair of M70x's coming, I will update for sure.

Does this require modifying the locking mechanism?

No modifications required. You just plug it, and it stays in its place.

Bluetooth Adapter And Amplifier Bal M50x

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

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NZ$161

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Sold byAmazon New ZealandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🎶 Elevate Your Audio Game with Wireless Freedom!

RAPID RECHARGE - Get back to listening in just 30 minutes for 5 hours of playtime.
UNMATCHED CLARITY - Enjoy exceptional sound quality with deep bass and clear mids/highs.
CONVENIENT CONTROLS - Easily manage your music with built-in volume and track buttons.
TRANSFORM YOUR SOUND - Turn your wired headphones into a wireless audio experience.
PERFECT COMPATIBILITY - Designed exclusively for Audio-Technica ATH M50x headphones.

The East Brooklyn Labs Bluetooth Wireless Adapter Amplifier transforms your Audio Technica ATH M50x headphones into a wireless powerhouse, delivering exceptional sound quality, convenient controls, and rapid charging for an unparalleled listening experience.

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NZ$161

Duties & taxes included

In stock

Sold byAmazon New ZealandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to New Zealand.

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TrustScore 4.5 | 7,300+ reviews

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Good experience, but the tracking updates could be better.

2 months ago

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Bluetooth Adapter and Amplifier BAL-M50X

Description

Common Questions