Great pair of entry level iems, especially for the price. I wish they came with a pair extra small sancai ear tips (the smalls are just a little too big for me) but that’s just a matter of how my ears are built. Been loving them so far!

Tangzu Portable DAC Dongle
Features
•Tangzu SPV4040
•Low signal-to-noise ratio - Independent decoding chip
•Low power consumption - 3.5mm interface with 36 strands of 0.08mm German high-purity copper + 280 strands of silver-plated wire cores
•Electroplating process - Universal Type-C connector
•Powerful decoding - delicate vocal reproduction
•PCM 384KHz - 32-bit
High-quality Sampling Rate
•Utilizes the SPV4040 decoding chip to convert high-definition digital signals into analog signals - delivering more detailed and clear sound quality for a richer audio experience
Craftsmanship
•Electroplating process for a high-quality finish
•Compact and exquisite design
•High-purity copper silver-plated wire
Compatibility
•Type-C Interface - Compatible with Android and iOS systems
•Android - Xiaomi/Redmi - Huawei - Honor/Nova - Samsung - OPPO - Vivo/IQOO - Realme
•Apple - iPhone 16 series - iPhone 15 Pro - iPhone 15 - iPhone 15 Plus - iPad series 2024
•Smartisan devices
•iPad series 2023
•Continuously updating compatibility list
High-Fidelity Audio
•Upgraded wire - 36 strands of 0.08mm German high-purity copper + 280 strands of silver-plated wire cores
•Lightweight and portable - 7.8 grams
•Compact decoding solution for a better user experience
LIGHTWEIGHT AND PORTABLE
Technical Specifications
•Decoder Chip - SPV4040
•Input Interface - Type-C
•Output Load - 160-300Ω adaptive
•Signal-to-Noise Ratio - 95-105dB @ 32Ω
•Output Power - 25mW @ 32Ω
•Sampling Rate - 384KHz - 32-bit
•Output Interface - 3.5mm audio jack
•Total Harmonic Distortion + Noise - < -90dB
•Frequency Response Range - 20Hz - 40kHz
•Crosstalk - -80dB @ 32Ω
•Product Length - Approx. 130mm
•Cable Material - High-purity copper silver-plated wire