Is it worth it for $100? I already have a Stoner Acoustics UD110.
http://www.bestbuy.com/site/dragonfly-digital-audio-converter/5426026.p;jsessionid=010EF9F58CB3B8C6DFD17317027BC761.bbolsp-app02-166?id=1218657483207&skuId=5426026&st=dragonfly&cp=1&lp=2
http://www.amazon.com/AudioQuest-DragonFly-Digital-Analog-Converter/dp/B00882U782?t=slickdeals&tag=slickdeals&ascsubtag=sPPvgFeQEeOMr_ptPfwOsA0_YsOp3_0_0_0
http://www.bestbuy.com/site/dragonfly-digital-audio-converter/5426026.p;jsessionid=010EF9F58CB3B8C6DFD17317027BC761.bbolsp-app02-166?id=1218657483207&skuId=5426026&st=dragonfly&cp=1&lp=2
http://www.amazon.com/AudioQuest-DragonFly-Digital-Analog-Converter/dp/B00882U782?t=slickdeals&tag=slickdeals&ascsubtag=sPPvgFeQEeOMr_ptPfwOsA0_YsOp3_0_0_0