How do you figure that? Just because I am auditioning headphones instead of just ordering online and equing doesn't mean I will spend more. I set a budget and choose headphones that are in my price range that meet my needs for sound quality and comfort. Just because I am buying headphones off the internet unheard doesn't mean I will buy cheaper models.
Chances are based on reviews both personal and professional that I would still have purchased the same B&W P5 S2's. The only difference is by auditioning them I was sure I would like them vs buying unheard and hoping so. Also when you buy retail you can haggle for a better price. My P5 S2's were selling for $299.00 in Toronto and I talked the salesman down to $269.00. My budget was $300.00. The store also covers the full 2 year warranty so if I need any replacement parts the store will get them for me.
Not all DAP's offer enough eq frequency adjustments to adjust the sound to your needs. For example my A17 eq bands drop from 1 KHZ to 40 HZ. Most of the headphones designed for portable use now are bass emphasized which I don't like and why I ruled out most pairs. There is no way for me to adjust the lower bass frequencies to my liking on my A17 if I can only adjust at 40 HZ. My A17 fits all my needs for battery life, storage capacity, and LDAC bluetooth, UI etc.. By your logic I would have to get a different DAP with greater frequency eq options even though my A17 is perfect for me so I could eq to match headphones.
Sorry, but taking my perfect for me DAP and matching it to the best headphones in my price range via audition makes more sense to me. Buying a DAP and headphones online and hoping I can eq them to match makes no sense to me.