Not sure if this is the correct place to post this, but here goes. If I decide to fit a new set of valves to my Stax 007t valve amp, can anyone tell me how to check the bias? It looks pretty straightforward - there are four test points inside the amp on the printed circuit board, and four...

With the obvious popularity of headphones, it amazes me that binaural recordings are so hard to come by. Can anyone point me towards a source of good quality binaural recordings? I don't mean the usual crappy 'sound effects' recordings, but good classical or jazz / big band recordings. I seem to...

Does anyone know where you can obtain good quality binaural recordings of music as opposed to recordings of crappy sound effects? I was thinking along the lines of classical music or well engineered jazz or big band music. Judging by the number of people who contribute to these headphone forums...

Can anyone recommend a fairly inexpensive ear bud (no more than about $50 or £35) that would be suitable for using during a flight instead of the crappy earphones supplied by the airline. I am looking for something that will offer a degree of sound isolation from background noise, and...

I use a Stax 4040 Signature System II, and I was wondering if someone can tell me (very precisely) the correct way to adjust the bias on the SRM-006t amplifier? There have been one or two postings on this subject, but the instructions given have been a bit vague. For example, I gather that...