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DAC USB Amplificateur Casque Symétrique ES9038Q2M AD8397
The 9038SG3 from E1DA is a high performance USB DAC and portable symmetrical headphone amplifier combo. Compact and lightweight, it nevertheless incorporates excellent components to ensure excellent sound reproduction, marked by incredible precision and richness.
For example, its aluminium shell conceals a DAC ES9038Q2M chip supporting high sample rates up to 32bit 384kHz PCM and DSD256. The 9038SG3 works without battery and is powered directly by your playback device (smartphone, DAP...) but offers a particularly low power consumption. The input is on USB-C connector where the output is on a balanced 2.5mm jack plug (pinout Astell & Kern). The USB interface chip is a ComTrue CT7601 with 100% proprietary code to maximize Android and DSD compatibility.
The instrument's measurements are particularly good, with a wide frequency response from 10Hz to 100kHz, an SNR of -123dBA, a dynamic range of 123dBA, or a THD of only 0.0002% (@ 32Ω, 1kHz, -3dBFS). Under these circumstances, the distortion is almost indistinguishable from electronic noise.
E1DA's Tweak9038 application allows you to control harmonic distortion compensation, select a Nyquist filter, manage the Master Clock frequency and much more. Most of the parameters can be set dynamically depending on the hardware volume, audio data rate, etc. An ideal tool to adapt the sound reproduction of your DAC according to your listening and your hardware.
It is not possible and strongly discouraged to use a balanced to unbalanced adapter with the 9038SG3. This could damage it irreparably.
" ... inside lives a potent, highly optimized DAC and efficient headphone amplifier. It shows excellent command of engineering and proper design verification through measurements. "
| Specifications | |
|---|---|
| Product type | USB DAC Balanced headphone amplifier |
| Input | USB-C |
| Output | Balanced Jack 2.5mm (pinout Astell & Kern) Note: Never use an unbalanced adapter, it can seriously damage the DAC. |
| DAC Chip | ES9038Q2M |
| Amplification chip | AD8397 |
| Supported sampling rates | PCM up to 32bit 384kHz DSD up to DSD256 |
| Output impedance | 100mΩ |
| Output power | > 340mW @ 32Ω, 1kHz, THD=1% > 550mW @ 16Ω, 1kHz, THD=1% |
| Frequency response | 10Hz - 100kHz (+0.1/-0.3dB) |
| SNR | -123dB(A) |
| Dynamic range AES17 | 123dB(A) |
| THD | 0.0002% @ 32Ω, 1kHz, -3dBFS |
| THD+N | < 0.0002% @ 32Ω, -3dBFS |
| Crosstalk | -126dB @ 1kHz 32Ω |
| General | |
|---|---|
| Power supply | 5V via USB |
| Housing material | Anodized Aluminium |
| Dimensions | 48 x 22 x 9mm |
| Weight | 10g |
No load = Blue curve
32Ω = Red curve
| Input | USB |
| Output | Jack 2.5mm |
| DAC / ADC Chip | ES9038Q2M |
| Max sampling rate | DSD256 |
| Max sampling rate | 384kHz |
| Color | Black |
| Class | Class D / T |
| Networking | No |
| Remote Control | No |
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