Well I can say I am finally almost finished with my basshead set-up. I do all my music listening through Spotify, as I am a premium member. On my desktop I run Equalify for EQ duties, which works great. I use the Dragonfly DAC, which then feeds into my Fiio E12 amp. This set-up provides fantastic slam, and sounds pretty damn good for the money invested. I use both the SZ2K's and my Yamaha Pro 500's with this configuration.
But like most bassheads, I've been constantly searching for more. Obviously I already own the bass kings (SZ2K's), but the only amp I have ever used with them is my E12. I'm confident more power will get them slammin harder, as I've followed HBB's progress with different amps. Also my Yammy's pound really hard and sound much better overall than the JVC's, but I have issues with comfort because the ear cups are a little too small for me. That's been a total bummer, as I REALLY love their overall sound quality. Pounding hard hitting bass, with solid mids and nice and crisp highs.
That has all lead to me this point. Over the last couple days I've scored a couple awesome deals from the classified section. I finally was able to score a mint pair of Fostex TH-X00's, unfortunately they are not the Purple Heart version as they are Mahogany but I'm sure they will still satisfy my bass needs. I was going to purchase a set of Purple Hearts, but the seller flaked out on me. I was not very happy about that, but at least I was able to snag a Mahogany set. I'm hoping these will take the place of my Yammy's, possibly providing both more overall slam and even better sound quality. And most importantly be nice and comfy. Super excited for these to arrive.
Next I snagged an iFi Micro iDSD to replace my Dragonfly/E12 combo. I'm going to keep my E12 around for portable use, but am excited to see what 4W of power will do to the SZ2K's. The DAC is supposed to be very good in it, possibly better than my Dragonfly. And now I will have all the power I will ever need.
Lastly, I will be getting an iPod Touch to use for portable listening with Spotify. I plan on using SpotEQ for equalizer duties, and will stack it with my E12 for starters. Since most of my portable listening is with IEM's (Sony 7550's), I may upgrade to a DAC/AMP combo since I won't need all the extra power from the E12. Looking at Oppo HA-2, Fiio E18, xDuoo XD-05, and Cayin C5 Spark. Not in a big rush on one of those, as I've found the DAC in the ipod touch to be surprisingly good.
Sorry for the long post, I just had to express my joy in finally getting an all around set-up that I am happy with. And it's all thanks to you guys in this thread that have helped pave the way. I can't wait to get all my new gear set-up and start slangin dat bass!!