Both. It's made from bioplastic and wood. The wood is used on the back of the housing to create a natural resonance. It's a perfect combo for this headphone. https://www.recyclingtoday.com/article/thinksound-launches-biplastic-headphones/ -Aaron, president and founder of thinksound

I recommend 72 hours of burn-in for all earphones.  The fitting size also needs to be correct in order to get the proper seal for accurate low-end.   Thanks!   Aaron Fournier President/ceo/engineer thinksound and first harmonic

Sure am!   Thanks   Aaron Fournier President/ceo/engineer thinksound and first harmonic

Probably not as they were custom made for the on.  If you own the On1 and need pads please email us at hello@thinksound.com as there is a 2 year warranty.   Thanks Aaron Fournier President and ceo thinksound/first harmonic

I hear ya.  Mostly BAT drivers.  I like simple dynamic designs right now and stuff that isnt too flashy.  Im kind of old-fashioned but it may happen in the future.     -Aaron

the earpads do get softer with body heat.  Cable microphics also drop over time.   Thanks Aaron Fournier President/ceo/engineer thinksound

Lets move the On1 talk to here maybe?  http://www.head-fi.org/t/689288/new-supraaural-headphones-from-thinksound-on1/90   Aaron

Unfortunately it would work to do that either.  It wasn't an amazon promotion but rather an unadvertised deal that wasn't processed correctly by amazon software tech when the deal was created.  Don't worry, it will be okay in the future.   thanks Aaron

@gikigill I appreciate the review but keep in mind this was not a code that was something advertised or anything.  While we do have a storefront on amazon the codes must be approved by them and their system doesn't seem to be playing nicely to say the least.  If I cannot resolve the issue with...

I will contact Jude.   Thanks Aaron

If someone wants to leave this as a rain2 thread and create another then I am all for it.   thanks Aaron

I have been researching the dual dynamic but so far Its tough to keep in a small package with the wood thickness limitations that I am comfortable with.  I will certainly keep working on it though.     Aaron

Feel free to contact me directly and I will always answer your questions, comments or concerns but as for stuff that is done through a 3rd party site it can be hard for us to control.  I will do my best though and call them tomorrow.     Thanks Aaron ceo - thinksound

High end what?  Earbud, on-ear, over-ear?  I am always working on stuff and I have many different projects going.  I am working on an over-ear but I don't have really any info on it yet.  What would you like to see?   Thanks Aaron