FiiO KA2 USB Amp/DAC with 4.4mm Balanced output (Open Box)

KA2 Compact DAC and Amplifier Dual 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 certified Unleash double the performance CS43131*2 The KA2 is equipped with two CS43131 DACs, each capable of high performance and accurately reproducing high-resolution audio. 4 sounds awesome, 4.4mm balanced out Get 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 audio Fully unleash the energy in your music with support up to DSD256 and 32bit/384kHz PCM high-resolution audio. Extremely convenient Supports FiiO Control APP Easily 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 filters The 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/MacOS The 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 indicator The 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: DSD Industrial design All-metal construction The 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 certified The 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. Specifications General specifications Name/Model KA2 color Classic Black hardware DAC: CS43131*2 FiiO Control support weight About 12.3g size fuselage: about 40mm x 15mm x 12mm. Line length: 70mm Audio input interface Type-C Cable or Lightning Headset output interface 4.4mm socket firmware upgrade The system firmware can be upgraded through USB sample rate indication blue: below 48kHz yellow: above 48kHz Green: DSD channel balance <0.02dB(32Ω/THD+N<1%) impedance adaptation 16 to 300 Ω The highest supported sampling rate 384KHz/32bit Support DSD DSD64/128/256 power supply parameters power supply battery capacity Audio parameters Headset Output Part Performance Parameters (4.4mm) output power 112mW (16Ω,THD+N<1%) output amplitude 2.2V(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 response 20Hz 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) Comparison Model KA1 KA2 KA3 color Classic Black/Dark Night Green Classic Black Classic Black DAC ES9281AC PRO CT7601+CS43131*2 CT7601 + ES9038Q2M + RT6863D * 2 FiiO Control is not supported. support support weight About 10g About 12.3g Approximately 17.5g size fuselage: about 40mm x 15mm x 8mm Line length: 70mm fuselage: about 40mm x 15mm x 12mm. Line length: 70mm About 56.3mm x 20.2mm x 12mm Headset Input Interface Type-C Cable or Lightning Type-C Cable or Lightning Type-C lines Headset output interface 3.5mm single end 4.4mm balance 3.5mm Single End (PO)+4.4mm Balance (BAL) Sample Rate Indicator blue: 48kHz and below yellow: above 48kHz Green: DSD magenta: MQA blue: 48kHz and below yellow: above 48kHz Green: DSD blue: 48kHz and below yellow: above 48kHz Green: DSD Decoding specifications PCM: 384KHz/32bit DSD: Dop 64/128 Native 64/128/256 MQA:16x PCM: 384KHz/32bit DSD: Dop 64/128/256 Native 64/128/256 PCM: 768KHz/32bit DSD: Dop 64/128/256 Native 64/128/256/512 output amplitude PO: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 power 45mW@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 consumption 50mA (standby) 60mA( 40mV) 65mA (standby) 70mA( 40mV) 120mA (standby) 130mA(PO 40mV) 130mA(BAL 40mV)