I want to send out a thanks to Borrego. Earlier in this thread, he (or she) recommended the Fanmusic Mk2 amp as a nice amp to combine with the sflo2. I took him (her) up on this advice and went to ebay to check out availability of this amp, There are a few vendors, one who sells the amp for US $79.99 (+10.00 shipping), and some others who sell for ~US $130-150 (+shipping). I chose the vendor who sells for $79.99 + shipping (Polychen), and I'll admit I was a bit nervous. (I worried most about receiving some cheap counterfeit knock-off). However, the amp arrived about 12 days after I purchased it (from China to Texas), and the packaging was superb (much faster than anything I've ordered for Mp4 Nation). The only glitch was that I received a wall recharger that was not made for the US. This was easily remedied by purchasing a wall adapter from a local electronics store ($5.00). In any event, I charged up the amp and it sounds great with the sflo2 LO. The LO-amp maintains the openess of the sflo2 sound and extends the treble. I had previously used a PA2v2, but this amp seemed to "narrow/limit/close in" the sound, so I am very happy with my fanmusic purchase. Although I could be wrong, the amp does not seem to be counterfeit and it is a nice match for the sflo2. Although I can't vouch for Borrego's claim that the Fanmusic rivals the Headstage Arrow, I am very pleased with this amp and I will keep it for quite a while. I do find that listening to the LO-amp path provides some improvement over the HO path, but either way the sflo2 is a great sounding music player. Thanks again, Borrego.