iBasso Audio / DC04PROBK

iBasso Audio/DC04PRO Black is a portable USB-DAC/AMP that supports 4.4mm balanced output.

■CIRRUS LOGIC “MasterHIFI” Dual equipped with audio DAC “CS43131”
・DC04PRO is equipped with CIRRUS LOGIC's high-fidelity MasterHIFI line of DAC chips ""CS43131"" in a dual configuration, achieving excellent audio specs and a high-quality listening experience.

■Advanced power supply technology in a small body
- In the design of audio equipment, the power supply is directly connected to the sound quality, so no compromises are allowed, even if the DAC/AMP uses a compact board.
The DC04PRO adopts an independent power supply design, and uses switching regulator technology such as ``synchronous rectification'', ``high-speed low-noise LDO'', and ``high-efficiency DC/DC boost converter technology'' to inherit iBasso's high-level power supply technology in a compact design, achieving dynamic and powerful sound comparable to audio players.

■Independent 4-way fully balanced amplifier circuit
・DC04PRO uses Ricore's amplifier chip ""RT6863"" in a dual configuration and creates a 4-way fully balanced amplifier circuit to suppress distortion to the utmost. Combined with a carefully designed analog circuit, the DC04PRO will enhance your smartphone music experience with a clear, warm sound experience with excellent resolution.

S/N ratio: 131dB
THD+N：0.00013%
Noise floor: <0.9μV
Balanced output: 280mW @32Ω

■In-house developed USB-FPGA board adopted
・iBasso has produced a wide range of audio players, from flagships to entry models. The technology cultivated through years of audio player research and development has been thoroughly applied to the DC04PRO's FPGA algorithm. The FPGA's clock source uses a ""femtoclock crystal oscillator"" manufactured by KDS (Daishinku), which has a reputation for clock accuracy, achieving improved clock accuracy and sound quality that is faithful to the original sound without any noticeable bleed.

■Adoption of volume control key realizes speedy volume control
・DC04PRO uses a hardware volume control key that allows smooth access to the product's internal volume. This allows access to the internal volume of the DC04PRO without using an application, allowing for more detailed volume control even on devices that cannot install applications. It enables delicate volume control in 100 steps from 0 to 100, allowing users to reach a comfortable volume with any connected device.

■Excellent power control and power saving design
・DC04PRO has high power specifications and power consumption is 650mW when using balanced output, and 550mW when outputting single-ended output with half the amplifier circuit closed, successfully reducing power consumption compared to conventional DAC/AMP. Furthermore, ""Eco mode (power saving setting)"" has been added to the dedicated APP for DC04PRO. By enabling this setting, the amplifier circuit is closed and the DAC chip's onboard amplifier is used to operate, allowing for further power savings of 410mW, allowing you to use this unit with your favorite power settings depending on the usage scene and device status.

■Enjoy a more comfortable music experience with the evolved “iBasso UAC”
・By installing iBasso UAC, an application dedicated to the iBasso DC series, on your Android device, you can access and customize hardware options that cannot be accessed with this unit alone, such as the digital filter, gain settings, output mode, LR balance, and ECO mode. By changing the settings to your liking according to the earphones/headphones you connect, you can pursue a more comfortable and high-quality music experience.
*This is an AndroidOS exclusive application.

■4.4mm+3.5mm dual connector 3-stage gain settings support a wide range of products
・DC04PRO is equipped with 3.5mm single end + 4.4mm balanced terminal. Gain settings can be freely selected from the three levels of ""Low"", ""Medium"" and ""High"" from the settings within the dedicated application ""iBasso UAC"", supporting optimal volume control by connecting with a wide range of products.

3.5mm single end: 2.0Vrms (at 32Ω load)
4.4mm balance: 3.0Vrms (at 32Ω load)

■Cable replacement design Free cable selection
・DC04PRO uses a Type-C connector that supports cable replacement. It comes standard with a Type-C to Type-C OTG cable that can be used immediately with Android devices, but by replacing the OTG cable according to the connected device, you can use the optimal connection method. In addition, by using the included ""Type-C to USB-A adapter"", you can connect it to a PC and use the DC04PRO as a USB-DAC.

*Compatibility with the system or hardware may not be ensured with some devices.
*For some Android devices, you may need to manually enable USB device settings from the settings.
*When connecting an iOS (iPhone, iPad) device, the volume on the device side will be fixed at the maximum volume to ensure stability of operation.

■Aluminum CNC unibody design made possible by craftsmanship
・The DC04PRO inherits the aluminum unibody design that has received high praise from the DC03PRO. The body is cut using high-precision CNC integral molding technology and ceramic sandblasted to give it a smooth and glossy feel.The panels on both sides are made of tempered glass, creating a sophisticated design and highly durable housing design.

■Equipped with multi-color LED indicator to understand the status at a glance
-DC04PRO supports PCM up to 384kHz/32bit, native DSD256 (DSD 11.2MHz) sound sources, and is equipped with a multi-color LED indicator. The color of this LED indicator changes in conjunction with the sound source being played, so you can understand the status of the product at a glance.

Red: Standby
Blue: DSD
Green: PCM



■Housing: Aluminum
■Size: 59mm x 23.4mm x 12.1mm
■Weight: 21g
■DAC chip: CS43131×2
■PCM: up to 384kHz/32bit
■DSD: Native DSD 256 (DSD 11.2MHz)
■Input terminal: USB Type-C
■Output terminal: 3.5mm single end, 4.4mm balanced

<3.5mm single-ended output>
■THD+N: 0.00018% (300Ω load)
■Output level: 2.0Vrms (32Ω load), 2.0Vrms (300Ω load)
■S/N ratio: 127dBA
■Dynamic range: 126dBA
■Frequency characteristics: 20Hz to 40kHz ±0.5dB
■Output impedance: <0.2Ω

<4.4mm balanced output>
■THD+N: 0.00013% (300Ω load)
■Output level: 3.0Vrms (32Ω load), 4.0Vrms (300Ω load)
■S/N ratio: 131dBA
■Dynamic range: 128dBA
■Frequency characteristics: 20Hz to 40kHz ±0.5dB
■Output impedance: <0.4Ω

■Accessories: Type-C to Type-C OTG cable, Lightning to Type-C OTG cable, Type-C to USB-A conversion adapter, quick start guide, product warranty