The DC04Ultra Isn't Just an Upgrade From the DC04PRO, it's a Full-Blown 'Ultra-Grade' Reinvention

• Dual Cirrus Logic CS43198 flagship DACs
• PCM 32bit/768kHz and DSD512 support
• Full-featured Android APK and 10-band PEQ
• Supports 3.5mm microphone call functionality
• 4.4mm + 3.5mm outputs

An Ultra-Grade DAC Dongle

With a powerful output of 980mW + 980mW @ 32 ohms, support for 3.5mm microphone calls, and a stainless steel shell, DC04U delivers a comprehensive upgrade in functionality and use experience. In comparison to the DC04PRO, its power consumption is slightly higher by 3.6%, but its effective drive power is increased by 2.5 times. 

Peak Driving Ability

The DC04U requires no external power supply while continuously delivering a stable output of 980mW + 980mW @ 32 ohms. Driving in-ear monitors? A piece of cake. Powering full-size headphones? Effortless. No external power needed, fully unlocking the potential of various headphones. The DAC dongle is stepping into the era of watt-level output power.

Dual CS43198 DACs

DC04U features dual CS43198 flagship DAC chips, which creates a four-channel true balanced circuit. It supports PCM 768kHz/DSD512 hardware decoding and uses DRE dynamic enhancement to perfectly eliminate 0dB distortion. DC04U offers clear sound, expansive soundstage, and a naturally pleasing listening experience.

FPGA + Femtosecond Oscillator 

Exceptional sound quality begins with a precise clock and data reproduction. The DC04U utilizes iBasso's accumulated FGPA audio algorithms, paired with dual femtosecond oscillators. This structure significantly reduces jitter during digital signal transmission. The result is more authentic, clearer sound.

A More Vibrant User Experience 

The 0.96-inch multi-color display features dynamic visuals, blending a sense of technology with practicality. The three physical buttons on the side provide clear tactile feedback for volume adjustment, filter switching, gain switching, and channel balance. From basic operations to fine-tuning settings, everything can be done with a single button press.

Android APK Upgraded

With the Android APK, all functions and settings are accessible. Powered by a high-performance DSP chip, it includes 7 preset EQ and 3 customizable EQ options, allowing free adjustments to suit various listening preferences. Through the iBasso UAC APK, you can achieve detailed tuning with a 10-band PEQ.

Specifications

• DAC Chipset: Dual Cirrus Logic CS43198
• PCM: Up to 32bit/768kHz
• DSD: Native DSD 512x
• Weight: 1.31 oz
• Dimensions: 2.28" x 0.92" x 0.52

4.4 Balanced Output

• THD+N: -119dB(0.00011%)@1kHz 300 ohms load
• Output Voltage
  • 1.5Vrms (Low Gain)
  • 4.2Vrms (Mid Gain)
  • 6.1Vrms (High Gain)
• Output Power: 980mW + 980mW @32 ohms 
• Frequency Response: 10Hz-80kHz -0.5dB
• S/N: 132dB
• Dynamic Range: 132dB
• Output Impedance: <0.1 ohms
• Crosstalk: 148dB

3.5mm Single-Ended Output

• THD+N: -113dB(0.00022%)@1kHz 300 ohms load
• Output Voltage
  • 0.76Vrms (Low Gain)
  • 2.1Vrms (Mid Gain)
  • 3.0Vrms (High Gain)
• Output Power: 280mW + 280mW @32 ohms 
• Frequency Response: 5Hz-75kHz -0.5dB
• S/N: 126dB
• Dynamic Range: 129dB
• Output Impedance: <0.1 ohms
• Crosstalk: 136dB

In the Box

• iBasso DC04Ultra
• USB-C to C cable
• USB-C to A converter
• User manual
• Warranty card