inputs.text: bargain sq thing - bought nad viso 1 primarily play music laptop office liked fact viso take digital signal macbook pro via optical cable unit singularly replaced previous combo dac da converter integrated amp speakers thus saving precious real estate eliminating cord clutter desk addition occasionally use viso portable ipod dock bluetooth aptxcompatible playerthe viso uses acclaimed \\direct digital\\ circuit technology nad trickled flagship m2 amplifier msrp 6000 seen audio forums people get obsessed latest dacs well one approach get best sound digital skip da conversion altogether thereby eliminating sound quality sq loss associated conversion direct digital digital signal entering viso remains digital way speaker terminals visos speakers designed nads sister company psbi suspect nad targets audio enthusiasts like main stereo system costs 30k viso received many awards strong expert reviews appeal unit direct digital eager try viso offered lowest entry price circuit 299 slashed original 499599 comparison nads cheapest direct digital amp d7050 costs 999 nuforces dda100 amp uses similar circuit sells 549 build quality black viso matches original price 599 front unit covered cloth rear piano black silver handle completes elegant style unit heft 12 lb good sq might slightly reduce portabilitypotential buyers viso aware unit lacks ubiquitous features namely lacks analog input ie 35mm rca terminalsor eq control including simple basstreble boost guess omissions related direct digital lack analog inputs means signal needs fed one two digital inputs optical ipod bluetooth note eq control itunes music player pure music etc still works lastly viso not operate batteries coupled delicate cloth covering speakers doubt model like take beaches mountainsso viso sound one word clean using digital inputs optical ipod noise floor extremely low sound response quick hint distortion little none point form factor constrains distance two speakers narrows sound stage somewhat companies employed fake widening compensate portables safe assume though fake widening direct digital philosophically incompatible despite limitation sound coming viso hifi like particularly mesmerized detailed realistic piano tones portable players struggle reproduce lack onboard eq turned non issue using little tweak itunes eq viso produced natural tone balance plenty bass type music classical using iphone 4 dont believe supports aptx found sound coming bluetooth audibly inferior sound digital inputsto summarizeprosamazingly clean sound price extremely low noise floor quick response low distortionspace saver computer audio functionally replaces dacamplifierspeaker without cord clutterexceptionally well builtconsno aux analog inputsno treblebass eq controlno battery operationipod jack 30pin typethe buttons remote difficult readconclusionthe viso not everybody every occasion lack analog aux onboard tone control battery operation might deal breaker many thing though viso built like 599 machine arguably sounds better original price venture guess weaker brand power nad trustable audio name newcomer mass market aforementioned lack feature sets forced nad cut price first 499 half original price also model uses old 30pin jack looking unit sit mostly inside house sans occasional patio use priorities sq sq sq viso 299 top list