If you've lost your professional adapter or it has fallen apart, then here is your replacement! 

Have you tried buying locking adapters before but been shipped a standard consumer non-locking version?  Look at the pictures: this is the real deal, locking (screw on) headphone adapter that works with the major professional headphones.

Have you tried the non-locking adapters
because they're cheaper?  It works, but it also pulls apart with the slightest tug.  Note: this only works with headphones using the threaded 1/8" connector.  See below.

Screws onto 1/8" (3.5mm) connectors of many professional headphones for a secure fit to plug into the larger (and more durable) 1/4" (6.3mm) headphone jacks. This does NOT work with 1/8" plugs that do NOT have the screw threads.

This is a directly compatible replacement for a Shure HPAQA1 and Sennheiser H-82370

Compatible with:
AKG K240
Audio-Technica ATH-M40x*, ATH-M50x (unconfirmed for ATH-M20x, ATH-M30x, and ATH-M70x but is compatible with M series locking cables).

Shure SRH2A40*, SRH440, SRH550DJ*, SRH750DJ*, SRH840, SRH940*
Sennheiser HD280, HD380
* Not personally tested but compatible according to manufacturer's website.

NOTE: Sony 3.5mm headphone plugs are a few mils larger than other professional headphone brands.  These will NOT work with Sony MDR series headphones.  For Sony compatible adapters, please see our other listings.

Here's what one satisfied customer had to say:

"...I was all set to order one with all of the uncertainty of another Chinese product that may or may not actually fit my cable's connector when I came across your offering. I was encouraged by the fact that you did indicate it was compatible with the AKG headsets. You are absolutely correct, it is a perfect fit to the AKG factory connector!..."


If you need to replace the cable mount connector, see my other listing for a DIY solder version.

What you see is what you get. Unless shown in the pics, noted in this description, or in the condition description - no additional accessories are included. Comes in a plain plastic bag.

Bulk packaging (plastic baggie) only.

Quantity discounts available.  See my other items for 2 packs. 

Auction details & disclaimers:

Functionality: If you're looking at this, then you should already know how it works. It will NOT fit onto 1/8" (mini) headphone plugs that do not have the screw feature. If your headphones don't have screw threads right where it plugs in, do NOT buy this.

Shipping will be calculated based on your location (see shipping details). I've given you the choice for how fast you want it - slow and cheap or fast at a price. I will ship within 2 business days of cleared payment. Usually ships the same business day or next (Monday - Friday excluding US holidays) depending on when payment clears. I will combine shipping upon request - see below.

I will combine shipping based on total cost of all units that can fit in single package. To get combined shipping, buyer must notify me of such intent BEFORE paying for an individual item.

Payment via PayPal is expected immediately. Failure to pay will result in a case being opened against you.

Credit card payments are accepted through PayPal.

Returns: Returns are handled directly - not through eBay as follows. The unit is new. I will guarantee it is not DOA and accept returns if it is DOA. I will reimburse domestic return shipping for DOA - I'm that confident (once I have verified the problem upon its return). If damage is caused from shipping, notify me immediately upon receipt and we will open a claim against the shipper.

Refunds are only given via PayPal to the account originally used to purchase the item.

If you find a hidden functional problem (unit fails to perform as described) within 30 days of receiving the unit, contact me to discuss. I will generally accept returns for such problems but the buyer pays return shipping. I will issue the refund including reimbursing the return shipping expense once I have verified the problem and probable cause.

Returns for other reasons: Your failure to be able to configure, operate, or utilize the unit (such as, but not limited to: lack of experience, expertise, etc.) or your simply not liking it does not constitute a functional problem of the unit. The unit not being appropriate for your application does not constitute a functional problem of the device. Non-functional related problem returns are allowed on limited basis. A 20% restocking fee will apply to non-functional problem returns and buyer pays all shipping costs.

Buyer has 30 days to contact seller regarding problems or returns. Refunds as noted above will be made upon seller's receipt of the exact unit in the same condition as pictured and described herein. Refunds will only be issued via PayPal. Buyer's substituting, modifying, servicing, damaging, or otherwise altering the unit will negate above guarantees.