ddHiFi TC44Pro E2 4.4mm Balanced DAC Dongle | Lightning or USB-C

ddHiFi's TC44Pro E2 DAC/Amp Dongle Boosts Your iPhone, iPad, or Android's Audio Quality With Plenty of Power

Dual CS43131 DAC chips and ES9603Q op-amps for superior audio
Supports high-res PCM up to 32bit/384kHz and native DSD up to DSD256
Balanced 4.4mm output with 250mW power at 32Ω
Low THD+N (<0.0004%) and excellent dynamic range (>120dB)
Compact and portable design with PCM and DSD status indicator


The "Eye," 2nd Generation
ddHiFi's TC44Pro E2 is a wired USB DAC amplifier dongle with a unique eye-shaped design and a single interface. Its 2nd gen “Eye” cable strands feature pure, premium 07 series Silver-shielded conductors, offering durability, high resolution, and detailed audio performance.
Tuning + High Power
TC44Pro E2 uses x2 CS43131 decoding chips and x2 ES9603Q independent operational amplifiers. The chip's nominal power is more than that of TC44Pro, and the output amplitude is limited to 80% to ensure overall listening comfort.
Premium Materials for Premium Sound
The socket is equipped with a Pentaconn 4.4mm plug from NDICs, paired with a circuit board crafted through a double-layer stacking method. It is manually assembled using lead-free solder with 3% Silver content. To enhance durability and aesthetics, the socket’s top is reinforced with a metal ring, offering both protection and an elegant design.

DIY Leather
A simple adjustment can create a shorter appearance, while the combination of cowhide rope and a metal shell offers an aesthetically pleasing look. Along with the pre-tied leather rope, the package includes a 11.8" leather rope. Scanning the QR code on the packaging yields assistance with creating your own “snake knot.”
Status Indicator LED
TC44Pro E2 supports up to DSD256 native DSD decoding. There is a subtle LED on the unit to indicate playback mode:


Blue: PCM output

Green: native DSD decoding output


Specifications


DAC: Dual CS43131

Op-Amp: Dual ES9603Q

Output Power: 250mW @32Ω

SNR: >125dB (A-wt)

Dynamic Range: >120dB (A-wt)

THD+N: ≤ 0.0004 % @1kHz

PCM Decoding: Up to 32bit/384kHz

DSD Decoding: Native DSD64/DSD128/DSD256

Status Indicator: Blue (PCM) | Green (DSD)

Dimensions: 60mm × 20mm × 10mm

Cable Length: 3.54"

Weight: About 21g