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SINGXER SDA-6 PRO2 Balanced DAC
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Accessories for this product
Find here a selection of useful and/or essential accessories for this product. These are specially selected by the Audiophonics team according to the characteristics of the product.
SINGXER SDA-6 PRO2 Balanced DAC 2x AK4499EX AK4118 FPGA XMOS I2S LVDS 32bit 768kHz DSD512
Singxer's SDA-6 PRO2, the second version of the SDA-6 PRO, is a high-fidelity balanced DAC. It features numerous improvements over its initial version:
- The SDA-6 PRO2 uses two AKM AK4499EX DAC chips coupled to an AK4191 digital filter for its digital-to-analog conversion work
- The USB interface's crystal oscillator uses a femtosecond clock coupled with an internal constant-temperature system for enhanced stability
- The USB interface has been upgraded to a third-generation XMOS XU-316 USB interface supporting 32Bit 768kHz PCM and DSD512
- The power supply has also been upgraded to an ultra-low-noise system, reducing the level of low-frequency distortion
- Digital preamplifier supports volume control, analog gain up/down, screen brightness adjustment and screen-free playback
SDA-6 PRO2: A high-end architecture
The architecture of the Singxer SDA-6 PRO2 balanced DAC gives it a level of sound reproduction that will not leave you indifferent. It incorporates top-of-the-range components selected for their audio performance. As mentioned above, its digital-to-analog conversion stage is based on two AKM AK4499EX DAC chips coupled with the AK4191 digital filter. These support high-resolution streams up to PCM 32Bit 768kHz and native DSD up to DSD512. The DSD stream operates in NOS (Non Over Sampling) mode, without passing through the AK4191 filter, in order to respect the original signal as closely as possible.
The USB interface is an XMOS XU-316 interface, and SPDIF reception features a dedicated AKM AK4118 chip. In addition to these high-fidelity components, an STM32 microcontroller is in charge of efficient data processing, and a Xilinx FPGA handles clock management and digital audio stream processing.
Regarding the SDA-6 PRO2's output circuitry, it adopts 4 discrete Class A output channels featuring a DC-balanced non-loop negative feedback architecture. The USB input oscillator uses a CCHD-957 femtosecond clock for minimal jitter, combined with 4 independent ultra-low-jitter oscillators for the rest of the circuit. The analog stage incorporates Mundorf film capacitors, which deliver excellent musicality.
SDA-6 PRO2: a low-noise power stage
The power supply stage features a customized 40W O-type transformer with 4 independent output windings. In addition, the digital-to-analog conversion stage is powered by a new low-noise system (0.3uVrms). An internal switch handles the selection of 115V or 230V AC input voltages for the Singxer SDA-6 PRO2.
SDA-6 PRO2: extensive connectivity
The Singxer SDA-6 PRO2 features a complete range of inputs and outputs, enabling it to be integrated into most audio systems. Inputs include USB-B (XMOS), I2S LVDS via HDMI, Toslink optical, coaxial, AES/EBU and BNC. The device also features a CLK input on a BNC connector for external clock connection. Outputs include unbalanced stereo RCA and balanced stereo XLR.
Technical characteristics
| Specifications | |
|---|---|
| Product type | Balanced DAC |
| DAC chip | 2x AKM AK4499EX |
| Inputs | 1x I2S LVDS HDMI (Standard pin out PS Audio) 1x USB-B 1x Optical Toslink 1x Coaxial 1x AES/EBU 1x BNC 1x CLK (via BNC connector) |
| Outputs | 1x XLR stereo balanced 1x RCA stereo unbalanced |
| Supported sample rates | USB, I2S: PCM up to 32bit 768kHz, native DSD up to DSD512, DSD DoP up to DSD256 SPDIF, AES/EBU: PCM up to 24bit 192kHz, DSD DoP up to DSD64 |
| SPDIF input impedance | 75Ω |
| AES/EBU input impedance | 110Ω |
| Output levels (0dBFS) | PCM : RCA 2.6V RMS, XLR 4.6V RMS DSD : RCA 2.6V RMS, XLR 4.6V RMS |
| Output impedance | RCA : 22Ω XLR : 45Ω |
| Frequency response | 20Hz - 20kHz ±0.1dB |
| SNR | 131dB (20Hz-22kHz, A-Weighting) |
| THD+N (1kHz, 0dBFS) | 0.00012% (-118dB) @ fs=44.1kHz, PCM, 20Hz-22kHz, A-Weighting |
| Dynamic (1kHz, -60dBFS) | 131dB @ 20Hz-22kHz, A-Weighting |
| Channel separation | > 130dB @ 1kHz |
| Général | |
|---|---|
| Supply voltage | 115V-230V AC (selectable by internal switch) |
| Dimensions (excl. feet and connectors) | 262 x 220 x 46mm |
| Weight | 2.7kg |
| Color | Black |
| Package | 1x Singxer SDA-6 PRO2 1x USB cable 1x IR remote control 1x Power cable |
| Input | I2S via HDMI |
| Input | AES/EBU |
| Input | USB |
| Input | Optical |
| Input | BNC |
| Input | SPDIF |
| Output | XLR |
| Output | RCA |
| DAC / ADC Chip | AK4499EX |
| Max sampling rate | DSD512 |
| Max sampling rate | 768kHz |
| Color | Black |
| Networking | No |
| Remote Control | Yes |
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