Guides
Comprehensive Guide to Dongle DAC Specs: SNR, Distortion, Noise Floor, Power Output - What's Behind the Numbers
Using KEYSION's full range of measured parameters as samples, clearly explain the physical meaning of each parameter, how good is good enough, which numbers matter, and which are just marketing numbers.
Which KEYSION Portable DAC? 01 vs 02 vs 02 Pro Compared, With Buying Advice
Three tiers at CNY 219 / 349 / 499 (USD 33 / 53 / 76); the gap is power and PCM spec. Short version: IEM-only gets the 01, headroom for headphones gets the 02, high-impedance cans go straight to the 02 Pro.
Does a Basic Pouch Really Protect Your Dongle DAC? KEYSION Bag02, Tested
PU leather material, lightweight basic storage, CNY 16 (USD 2). No magnets, no extra structure, just a scratch-resistant "clothing" for your aluminum dongle.
Is a Magnetic Leather Case Worth It for Your Dongle DAC? KEYSION Bag01
PU leather + built-in magnet, MagSafe magnetic standard compatible, CNY 39 (USD 6). Small items like dongles and adapters now have a fixed place, no more fishing by feel in your bag.
Memory Foam Eartips: Do They Really Boost Bass and Isolation? 30A, Tested
30A liquid silicone + slow rebound memory foam, sizes L/M/S. Seals tighter than silicone tips, fuller bass, better commute noise isolation. One pair solves "unstable fit, sound leakage, unclear details."
Do You Need a 3.5mm Extension Adapter? KEYSION J2, a Cheap Fix
3.5mm male-to-female extension adapter, stainless steel painted shell, gold-plated contacts. Solves three little problems: deep holes that won't fit, protective case obstructing, and earphone cable too short.
Do You Need a 384kHz Gaming Headset? G-Turbo X1 for Mobile Gaming, Tested
Custom chip, dual microphone, EQ tuning, Type C plug and play, CNY 99 (USD 15). A wired esports headset for mobile gamers and players on both mobile and PC.
Does an AUX Cable with a DAC Chip Improve Car Stereo Sound? H-Turbo S1, Tested
Type C phone direct output to 3.5mm TRRS, custom chip decoding, 8×49 silver-plated oxygen-free copper wire body. The S1's use cases are clear: car AUX, powered speakers, old headphones. For CNY 59 (USD 9), it completes the last segment of analog input.
Can a Budget Type-C Balanced Dongle Sound Good? H-Turbo S2, Tested at Entry Level
Custom chip, silver-plated OFC 8x49-strand body, 3.5mm balanced output and EQ support. The S2 turns a DAC into a cable - the cheapest meaningful upgrade for phone + IEM listeners.
Your First Portable DAC: What to Look For, and What KEYSION 01 Offers
CNY 219 (USD 33), PCM 384kHz, DSD256 hardware decoding, 0.85μV ultra-low noise floor. If you only need a clean source for a pair of IEMs, the 01 spends your budget where it matters.
361mW in a Dongle: What Can It Really Drive? KEYSION 02, Measured
361mW power, PCM 768kHz, DSD256, specs same as the top-tier 02 Pro, CNY 150 (USD 23) cheaper. The 02 is the safest choice for those who mainly use IEMs and occasionally drive full-size headphones.
Can a 551mW Dongle DAC Drive Full-Size Headphones? KEYSION 02 Pro, Tested
With 551mW power, PCM 768kHz, DSD256 hardware decoding, dual outputs at -0.0008% distortion, the 499-yuan 02 Pro targets those who "don't have a desktop amp but want to drive full-size headphones well."