Keces Audio S3 Pre / Headphone Amplifier
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Product Overview & Specifications
With the Keces S3 you get a truly no-compromise, all-in-one device, encompassing a high-end DAC, preamplifier and headphone amplifier.
Carefully designed with very high-end components, it provides incredibly high quality sound reproduction that is as rich and precise as it is dynamic.
Its digital-to-analogue conversion section is equipped with a 32bit ESS ES9026Pro DAC chip that uses HyperStream® II arcitecture and Time Domain Jitter Eliminator technology to ensure excellent sonic performance. It also enables the S3 to support high-resolution audio streams, up to 32bit 384kHz PCM and DSD256.
The headphone amplification circuit of the S3 has an abundance of power on-tap which offers huge 2*2000mW under 32. It can thus accompany (without difficulty) very sensitive in-ear monitor or high impedance headphones.
With its extensive connectivity, the Keces S3 is also able to respond to the vast majority of usage scenarios, both balanced and single-ended.
On the input side, there are USB-B, coaxial, optical, single-ended RCA and balanced XLR.
For the outputs, we can also count on single-ended RCA and balanced XLR, as well as on balanced XLR 4 pins and unbalanced Jack 6.35mm headphone outputs.
The front of the S3 has a screen displaying information about the playback and a volume control. The latter is associated with a very precise relay attenuation circuit.
At a Glance :
- High Quality Toroidal Power Transformer
- Audiophile Headphone Amplifier with XLR 4-Pin and 6.35mm Outputs.
- High-performance DAC-ESS ES9026PRO.
- USB DAC: PCM 32 bit/384kHz and DSD DSD64(DoP)/DSD128 (DoP)
- DSD64/DSD128/DSD256 (ASIO Native).
- COAXIAL/OPTICAL DAC: PCM 24 bit/192kHz and DSD DSD64(DoP).
- Placed Balanced/Unbalanced Headphone output: Max Output Power 2000mW + 2000mW@32ohms.
- RCA/XLR Input/Output interface: Audiophile Preamplifier.
- Volume Control System: 128 step attenuator. Accurate control volume to achieve left/right channel balanced.
- Isolation circuit: Completely separates the grounding of the digital and analogue sections.
- Volume/Source/Sampling display using OLED has excellent visibility.
- The 4mm thickness of the aluminium chassis to effective to blocks EMI/RFI interference.
- The full-metal body realizes both vibration control and elegant style in an A4-size body that enables placement on a desktop to be a PC HIFI system or to be a small stereo system.
Digital Input Specifications
| COAXIAL | PCM support up to 16-24Bit /44.1kHz48kHz88.2kHz96kHz176.4kHz192kHz. DSD support up to DSD64 (DoP). |
| OPTICAL | PCM support up to 16-24Bit /44.1kHz48kHz88.2kHz96kHz176.4kHz192kHz. DSD support up to DSD64 (DoP). |
| USB | PCM support up to 16-32Bit/44.1kHz48kHz88.2kHz96kHz176.4kHz192kHz352.8kHz384kHz. DSD support up to DSD64(DoP)/DSD128 (DoP) DSD64/DSD128/DSD256 (ASIO Native) |
Analogue Input Specifications
| XLR | Input Impedance: 47k . Max Input Level: 10Vrms. Input/Output Gain: 0dB |
| RCA | Input Impedance: 47k . Max Input Level: 5Vrms. Input/Output Gain: 0dB |
Analogue Output
| XLR | SNR: -122dB 20Hz-20kHz A-Weighting. THD+N: 0.0004% at 1kHz A-Weighting. Frequency Response: 20Hz-20kHz(+0dB/-0.09dB). Channel Crosstalk: -124dB@1kHz. XLR output: 0-4Vrms Adjustable at 0dBFS. |
| RCA | SNR: -119dB 20Hz-20kHz A-Weighting. THD+N: 0.0007% at 1kHz A-Weighting. Frequency Response: 20Hz-20kHz (+0dB/-0.03dB). Channel Crosstalk: -122dB@1kHz. RCA output: 0-2Vrms Adjustable at 0dBFS. |
Headphone Output
| XLR_4PIN | SNR: -120db 20Hz-20kHz A-Weighting. THD+N: 0.00115% at 1kHz A-Weighting at 300ohms 100mW. Frequency Response: 20Hz-20kHz (+0dB/-0.09dB). Output Impedance: 0.6ohms. Output Power: 2000mW at 32ohms at THD+N=0.1%. 1200mW at 300ohms at THD+N=0.1%. 650mW at 600ohms at THD+N=0.1%. |
| 6.35mm | SNR: -108db 20Hz-20kHz A-Weighting. THD+N: 0.0015% at 1kHz A-Weighting at 300ohms 100mW. Frequency Response: 20Hz-20kHz (+0dB/-0.09dB). Output Impedance: 0.6ohms. Output Power: 1200mW at 32ohms at THD+N=0.1%. 350mW at 300ohms at THD+N=0.1%. 175mW at 600ohms at THD+N=0.1%. |
| AC Input Voltage | 110V-120V, 60Hz / 220V-240V, 50Hz (Switchable) |
| Power Consumption | 30 Watts |
| Casing | 4mm Aluminium |
| Dimension (WxDxH) | 300x220x66mm |
| Weight | 4KG |
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Keces Audio S3 Pre / Headphone Amplifier
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