Hi fellow pirates,

My new filter PCB is available and I intend to keep this available. 
It has an additional notch stage and various on-board power supply options.

The good news is the price is still the same even though the PCB has grown a fair bit in size.

price = E 8.50 included shipping and when paid with PayPal.
8.00 Euro when paid with IBAN/BIC transfer.

Component lists for 34 headphones are found in the new article that goes with this PCB and can be found here:
http://diyaudioheaven.wordpress.com/schematics/headphone/

Discussions and questions about the filter can be asked (in English only alas) here:
http://diyah.boards.net/index.cgi?action=display&board=technical&thread=92&page=1#860

Because of many questions asked by fellow pirates I have 'arranged' the possibility of buying either completed/populated boards or even completed boards in an enclosure.
This service still needs to be started up though and since each headphone needs another filter (and thus parts) delivery times and prices are not known yet and can be discussed with the forum member(s) (not me personally, too busy for that) that will be providing this custom service.

Admins... if you don't feel it is O.K. to place links to my website feel free to edit my post or contact me.
No idea if I am violating pirates honorary codes here.