Authorized Dealer. KA2 Compact DAC and AmplifierDual CS43131 DACs | 4.4mm balanced out | Supports up to DSD256 and 32bit/384kHz PCM Hi-Res audio Supports FiiO Control APP | 5 digital filters to choose | Compatible with Android/iOS/Windows/MacOS Ring-shaped RGB indicator | Industrial design | Metal construction | Classic black and gold color | Hi-Res Audio certifiedUnleash double the performance CS43131*2The KA2 is equipped with two CS43131 DACs, each capable of high performance and accurately reproducing high-resolution audio.4 sounds awesome, 4.4mm balanced outGet the KA2’s full potential by utilizing the 4.4mm balanced output – with max output power of 153mW@32Ω, a high signal-to-noise ratio of 131dB, and a THD+N of only 0.0005%*, with a pitch black background. All of this ensures clean, excellent sound.Listen to every last detail Supports DSD256 and 32bit/384kHz PCM high-res audioFully unleash the energy in your music with support up to DSD256 and 32bit/384kHz PCM high-resolution audio.Extremely convenient Supports FiiO Control APPEasily link the KA2 to the FiiO Control app, which allows you to easily adjust settings from the comfort of your smartphone.Choose as you like, 5 selectable digital filtersThe KA2 offers 5 different digital filters to select from – another way of allowing you to select how you want your music to sound.High-quality audio everywhere Compatible with Android/iOS/Windows/MacOSThe KA2 is compatible with Android/iOS/Windows/MacOS, covering most of the platforms commonly used. Get high-quality natural sound anytime, anywhere.Classic design Ring-shaped RGB indicatorThe ring-shaped RGB status indicator as featured in the KA lineup lets you instantly know what kind of audio format you’re playing with a single glance.Blue: 48kHz or below sample rate Yellow: Above 48kHz sample rate Green: DSDIndustrial design All-metal constructionThe KA2 follows the industrial design language as with the other members of the KA family – featuring a luxurious feeling, all-metal construction in a striking black and gold color scheme.Hi-Res Audio certifiedThe KA2 has been certified to be Hi-Res Audio capable, as according to the standards developed by the Japan Audio Association (JAS) and the Consumer Electronics Association (CEA). With the KA2, you are sure to get accurate, high-fidelity audio that is completely faithful to the original performance.SpecificationsGeneral specificationsName/ModelKA2colorClassic BlackhardwareDAC: CS43131*2FiiO ControlsupportweightAbout 12.3gsizefuselage: about 40mm x 15mm x 12mm.Line length: 70mmAudio input interfaceType-C Cable or LightningHeadset output interface4.4mm socketfirmware upgradeThe system firmware can be upgraded through USBsample rate indicationblue: below 48kHzyellow: above 48kHzGreen: DSDchannel balance<0.02dB(32Ω/THD+N<1%)impedance adaptation16 to 300 ΩThe highest supported sampling rate384KHz/32bitSupport DSDDSD64/128/256power supply parameterspower supplybattery capacityAudio parametersHeadset Output Part Performance Parameters (4.4mm)output power112mW (16Ω,THD+N<1%)output amplitude2.2V(32Ω/THD+N<1%)153mW (32Ω,THD+N<1%)channel separation≥ 91dB(1Khz,32 Ω load)54mW (300Ω,THD+N<1%)27mW(600Ω,THD+N<1%)output impedance<0.5 Ω (load 32 Ω)frequency response20Hz to 20KHz, the curve amplitude changes by 0.03dB.signal-to-noise ratio≥ 125dB(32 Ω A)20Hz to 50KHz, the curve amplitude changes by 0.05dB.≥ 131.2dB (600 Ω A)bottom noise<1.1uV(32 Ω-A)distortion plus bottom noise<0.00036%(32 Ω)<0.00023%(600 Ω)<1.05uV(600Ω-A)<0.00024%(32 Ω A)<0.00014%(600 Ω A)ComparisonModelKA1KA2KA3colorClassic Black/Dark Night GreenClassic BlackClassic BlackDACES9281AC PROCT7601+CS43131*2CT7601 + ES9038Q2M + RT6863D * 2FiiO Controlis not supported.supportsupportweightAbout 10gAbout 12.3gApproximately 17.5gsizefuselage: about 40mm x 15mm x 8mmLine length: 70mmfuselage: about 40mm x 15mm x 12mm.Line length: 70mmAbout 56.3mm x 20.2mm x 12mmHeadset Input InterfaceType-C Cable or LightningType-C Cable or LightningType-C linesHeadset output interface3.5mm single end4.4mm balance3.5mm Single End (PO)+4.4mm Balance (BAL)Sample Rate Indicatorblue: 48kHz and belowyellow: above 48kHzGreen: DSDmagenta: MQAblue: 48kHz and belowyellow: above 48kHzGreen: DSDblue: 48kHz and belowyellow: above 48kHzGreen: DSDDecoding specificationsPCM: 384KHz/32bitDSD: Dop 64/128Native 64/128/256MQA:16xPCM: 384KHz/32bitDSD: Dop 64/128/256Native 64/128/256PCM: 768KHz/32bitDSD: Dop 64/128/256Native 64/128/256/512output amplitudePO:1.2V(32Ω/THD+N<1%)BAL:1.2V(32Ω/THD+N<1%)PO: 2V(32Ω/THD+N<1%)BAL:2.7V(32Ω/THD+N<1%)output power45mW@32Ω(PO)153mW@32Ω(PO)130mW@32Ω(PO)235mW@32Ω(BAL)distortion + bottom noise<0.0005%(32 Ω A)<0.00036%(32 Ω)<0.00024%(32 Ω A)<0.0008%(PO 32Ω)<0.0010% (BAL 32Ω)signal-to-noise ratio≥ 114dB(32 Ω A)≥ 125dB(32 Ω A)≥ 131dB(600 Ω A)≥ 122dB (PO32 Ω A)≥ 119dB(BAL 32 Ω A)power consumption50mA (standby)60mA( 40mV)65mA (standby)70mA( 40mV)120mA (stan...