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Douk Audio K5 DAC Headphone Amplifier
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Douk Audio K5 DAC Headphone Amplifier ES9038Q2M + SA9312 32bit 384kHz DSD256
The Douk Audio K5 is a DAC headphones amplifier based on an audiophile chipset for excellent performance. Its chipset comprises an ES9038Q2M DAC chip, a SA9312 DSP, an OPA1678 OPA and an SGM8262 amplifier chip. It is therefore able to support high-resolution sampling rates up to PCM 32 bit 384kHz and DSD256, while delivering up to 560mW of power @ 32 ohm, i.e. output power capable of powering audio headphones or IEMs with an impedance of 16 to 600 ohm. Additional features include treble and bass tone control and gain adjustment. Furthermore, the Douk Audio K5's connectivity is quite extensive, with a USB-C input, a Toslink optical input, an RCA line output, a Toslink optical output and, of course, two headphones outputs: jack 3.5mm and jack 6.35mm. This desktop device is the perfect ally for anyone seeking audio quality and versatility of use.
Douk Audio K5: a high-performance DAC
Based on an ES9038Q2M chip and a SA9312 DSP/USB interface, the Douk Audio K5 supports sampling rates up to PCM 32bit 384kHz and DSD256, while offering an SNR of 121dB and a THD of just 0.0007% for rich, detailed, noise-free listening.
Douk Audio K5: a powerful headphones amplifier
On the headphone amplification side, OPA1678 AOPs and an SGM8262 amplifier chip deliver output power of up to 560mW @ 32 ohm on its 6.35mm jack headphone output, and up to 470mW @ 32 ohm on its 3.5mm jack headphone output. This power capability makes it compatible with many of the headphones and IEMs available on the market, whether they have an impedance of 16 ohms or 600 ohms.
Douk Audio K5: additional features
Tone control
Thanks to two potentiometers, the user can adjust the bass and treble for a personalized rendering, or bypass the function so as not to distort the audio signal.
Gain control
A Low (L) / High (H) gain control adjusts the headphones outputs to -6dB or 0dB.
Douk Audio K5 overview
| 1 | Operating indicator LEDs |
| 2 | Treble adjustment potentiometer |
| 3 | Bass adjustment potentiometer |
| 4 | Power on / volume control |
| 5 | 6.35mm jack headphones output |
| 6 | 3.5mm headphones output |
| 7 | Gain adjustment |
| 8 | Bypass activation or tone setting |
| 9 | USB / Toslink input selector |
| 10 | RCA output |
| 11 | Toslink optical output |
| 12 | Toslink optical input |
| 13 | USB-C input |
| 14 | Power supply 5V ≥2A via DC jack |
Technical characteristics
| Specifications | |
|---|---|
| Product type | DAC Headphone amplifier |
| DAC chip | ES9038Q2M |
| USB interface / DSP | SA9312 |
| OPA | OPA1678 |
| Headphone amplifier | SGM8262 |
| Inputs | 1x USB-C input 1x Toslink optical input |
| Outputs | 1x RCA line output 1x Toslink optical output 1x 6.35mm headphones output 1x 3.5mm headphones output |
| Supported sample rates | USB : PCM 32bit 384kHz, DSD256 Optical Toslink : PCM 24bit 192kHz, DSD DoP64 |
| Frequency response | 20-40kHz (±0.3dB) |
| Treble adjustment | 3K-20KHz / ±10dB |
| Bass adjustment | 20-250Hz / ±10dB |
| Recommanded impedance | 16-600Ω |
| RCA ouput specifications | |
|---|---|
| Output level | 2Vrms |
| THD+N | < 0.0007% |
| SNR | > 120dB |
| Channel separation | < -80dB |
| Noise level | <3μV (1KHz@300ohm) |
| Headphones output specifications | |
|---|---|
| Gain settings | High (0dB) / Low (-6dB) |
| Output power (High gain / THD+N < 1%) | 6.35mm jack : 560mW @32Ω 3.5mm jack : 370mW @32Ω |
| Max. output voltage | 6.35mm jack : 4.25Vrms @ 32 ohm 3.5mm jack : 3.45Vrms @ 32 ohm |
| THD+N | < 0.0008% @ 32Ω |
| SNR | > 121dB @ 32Ω |
| Channel separation | < -65dB @ 32Ω |
| Noise floor | < 3μV |
| General | |
|---|---|
| Power supply | DC 5V (≥2A) via jack DC 5.5*2.1mm or USB-C |
| Dimensions | 95*92*50mm |
| Net weight | 228g |
| Package | 1x DAC Headphones amplifier K5 1x USB cable 1x Toslink optical cable 1x Mains adapter |
| Input | Optical |
| Input | USB |
| Output | RCA |
| Output | Jack 6.35mm |
| Output | Optical Toslink |
| Output | Jack 3.5mm |
| 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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