Radsone developed a strong reputation with the portable ES100 DAC/amp. Now, with the new HUD100, the company brings that same performance to an even smaller form factor. Just 43-percent as large as the ES100, the HUD100 features a well-regarded AK4377 DAC and implements a MEMS oscillator as a master audio clock, allowing for more clear clocks for all audio circuitry. To accommodate all listening preferences, the HUD100 comes equipped with three modes: bypass mode for pure sound (ideal for sending out to another amplifier), DCT mode for an analog-like sound, and dynamic mode for Radsone-tuned sound signature with extra punch. To drive different headphones, it also has two different 3.5-millimeter jacks: one at a standard output of 0.914 Vrms, and one with a higher output of 2.26 Vrms.
Note: At checkout, you can add the HE100 IEM for (+ $40).
Optional HE100 IEM
Bringing coveted sound directly to your ears, the EarStudio HE100 IEM is a perfect match for the HUD100 DAC/Amp. The HE100 features a single Hi-Res dynamic driver that minimizes partial vibration sometimes found in IEMs, while clearly articulating across all frequencies (especially high frequencies). Topped off with an aluminum housing that’s both durable and lightweight, the HE100 is a great choice for immersive listening wherever you go. As Major HiFi’s review puts it: "If you’re looking for a well-balanced sound, and a flood of detail, the Radsone Earstudio HE100 will not disappoint."
DAC chip: AK4377
Outputs (3.5 mm): Standard (0.914 Vrms), High Power (2.26 Vrms)
THD + N (Standard): -105 dB (0.00056%)
THD + N (High Power): -102 dB (0.00079%)
Dynamic range (Standard): 118 dB
Dynamic range (High Power): 118 dB
Sample rates: Up to PCM 32-bit 384 kHz, DSD128 (DoP)
Desktop compatibility: Mac OS 10.10 or later, Windows 7 (32/64-bit) or later
Mobile compatibility: iOS 10.3.3, iPhone 6 or later, Android 6.0 or later
Dimensions: 1.8 x 1.3 x 0.3 in (4.5 x 3.2 x 0.8 cm)
Weight: 0.8 oz (21.5 g)
Type: Canal, in-ear
Driver type: Single Hi-Res dynamic driver
Sensitivity: 103 dB/mW
Frequency response: 10–40,000 Hz
Impedance: 27 ohms
3 eartips (small, medium, large)
3.9 ft (1.2 m) cable with inline microphone
Weight: 0.64 oz (18.1 g)
3.3 ft (1 m) USB cable
3.9 in (10 cm) USB cable
Estimated ship date is July 8, 2020 PT.
Payment will be collected at checkout. After this product run ends, orders will be submitted to the vendor up front, making all orders final.
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