First I'm confessing that I have never really gotten into headphones, to me headphones were mostly for the gym. Like car audio was for listening while driving and certainly not for critical listening, headphones were for listening when you really couldn't listen to your system but wanted to hear some music. I purchased several pairs of in-ear headphones and a couple mp3 players then gradually moved into headphones like the Senn PX100 and Koss Porta Pro. What started all this was a CMOY I purchased on "Feebay" from biosciencegeek that used a socket for the op-amp. It came stock with a OPA2227 and although it sounded good I wanted to see the affects of rolling op-amps. After a long and quite fun experience rolling many different op-amps I found the TLE2082 op-amp and realized the sound I was hearing was amazingly good. I then purchased some Denon over the ear headphones and a Qinpu A-3 and was hooked. After swapping the stock tubes on the Qinpu with some JAN GE black plate 5670's the sound took on an almost acceptable character. True the sound stage was stuck between my temples and the height was...well right around ear height but I was intrigued on how far the sound had come.
I recently purchased a Little Dot MKIII and was wondering if someone could give me some in-site on setting gain relative to the Superlux HD668b headphones I have been listening to lately. When I first bought these they were bright and harsh but have morphed into a detail resolving delight to listen to. The factory gain setting of 3 on the LD sounded good but I have switched to either 4 or 5 (I'm not sure due to not knowing if the settings are with the front facing me or away from me). Also I swapped the stock tubes with Sylvania 5654 black plates and I think they are an improvement. If someone could advise me on gain setting for the Superlux headphones and perhaps give some insight on interconnects I would like to hear it. This is my first post and this short headphone journey has been great fun and I hope to continue on it with advise from site's like Head-Fi!