SKU: 81359127326

Singxer SDA-6 PRO2 / PRO 2 Dual AK4499EX Digital to Analog Convertor (DAC)

Sale price$526.10 Regular price$584.55
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Description

Singxer SDA-6 PRO2 / PRO 2 Dual AK4499EX Digital to Analog Convertor (DAC)Features: >New Generation AK4191+Dual AK4499EX DAC chipset. >XMOS XU316 USB Processor. >Decodes 32bit 768kHz PCM and Native DSD512. >Optimized Ultra Low Noise Power Supply System. >Digital Pre Amp Function. >Two Level Gain Modes. >OLED Display Screen. >External 10M Clock Input. >Self Developed Adaptive Clock System. >High performance digital analogue Hybrid Phase Locked Loop. >4 Way Fully Balanced Class A Discrete Output Circuit. >Large FPGA For

Features:-

>New-Generation AK4191+Dual AK4499EX DAC chipset.

>XMOS XU316 USB Processor.

>Decodes 32bit/768kHz PCM and Native DSD512.

>Optimized Ultra-Low Noise Power Supply System.

>Digital Pre-Amp Function.

>Two-Level Gain Modes.

>OLED Display Screen.

>External 10M Clock Input.

>Self-Developed Adaptive Clock System.

>High-performance digital-analogue Hybrid Phase-Locked Loop.

>4-Way Fully Balanced Class A Discrete Output Circuit.

>Large FPGA For Signal Processing.

>Built-in 40-watt Customized O-Type Transformer.

>115V and 230V AC Voltage Support With Internal Toggle Switch.

Singxer SDA-6 Pro 2 is the latest flagship DAC developed with AKM’s new-generation AK4191+dual AK4499EX DAC chips and a custom-developed FPGA signal processing architecture. Singxer has optimized the internals of the SDA-6 Pro 2 to achieve class-leading performance promising quality output with ultra-low distortion and high SNR performance. The SDA6 Pro 2 supports native DSD and 32-bit PCM audio signals!!

New-Generation AKM DAC Chipset:-

Enjoy amazing sound signal decoding performance with a rich, velvety AKM in-house sound. The Singxer SDA6 Pro 2 comes equipped with a new-gen AK4191+Dual AK4499EX DAC chipset. This dual DAC arrangement delivers quality output by providing a natural tone, exquisite details, ultra-clear background, and low distortion performance. The output has amazing dynamics and high SNR performance.

Upgraded XMOS USB Processor Chipset:-

Singxer has upgraded the USB processor chip on the SDA6 Pro 2. It now comes with an XMOS XU316 16-core 3rd generation processor that enables smooth sound signal processing supporting up to 32-bit/76kHz PCM and native DSD512 audio signals. The SDA 6 Pro 2 is a true flagship-level performer in terms of USB Processing and overall performance.

Specially Developed Large-Scale FPGA Architecture:-

In order to achieve smooth digital audio signal processing, SDA-6 Pro 2 features a specially optimized FPGA architecture. It adopts self-developed third-gen algorithms with original multi-input channel isolation technology to ensure the purity of each input mode. Singxer SDA-6 Pro 2 features a high-performance digital-analog hybrid Phase-Locked Loop, that provides excellent clock synchronization recovery technology. It significantly improves the performance by filtering external digital input jitter secondary PLL.

Self-Developed Low-Jitter Clock Architecture:-

Singxer SDA-6 Pro 2 features a self-developed adaptive clock system technology. The DAC has a built-in 4-way independent ultra-low jitter crystal that is configured using a femtosecond clock system for the USB part. The clock architecture is embedded with Singxer’s self-developed thermostat technology to maintain a constant temperature. The SDA-6 Pro 2 also supports external 10M clock input for the USB interface while the other interfaces use WCK input.

Consistent Performance With Premium Power Supply:-

Singxer has a built-in 40-watt customized O-type transformer. The output of the four independent power supply winds up to 20 groups of distributed voltage regulator lines. Both the digital and the analog sections get a proper supply of power ensuring consistent performance in any given scenario. 

Here is the test data for the production version of the SDA-6 PRO, based on the APX555: -

 
Shipping Notes
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Exchange/Return Notes
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  • Final sale items are not eligible for returns or exchanges.
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SKU: 81359127326

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House of Squawk
Whiting, US
★★★★★ 5
Very comfortable in the Texas heat.
Size: Small, Color: Black/Navy/Dark Purple/Red
I got some of these as a gift and I loved them so much I purchased two more packs. I just opened my new packs and put them in the washer so I'm not leaving a photo. When I wear them they look exactly like they do on the models. I've been doing a lot of heavy outdoor work in the heat and I get drenched. These underwear have a 100% cotton crotch and the rest is 95% cotton and 5% spandex. When I first saw the wide crotch I didn't think I would like it. But these are soooo comfortable. I'm 4'11" and weight 108-112 and the size small fits loosly but well. I could probably get away with an XS but I like this loose and not too tight fit. I see some folks say these roll up. They don't roll up on me. I think they might roll if they were tight fitting. I have lots of other undergarments like these and some roll and some don't. But none of the others are cotton. They are mostly spandex and since I've found these in cotton that's all I'm wearing until summer is over. I can't feel them or see them under pants or skirts. These look more like shorts than underwear and they have a very nice thickness. Since I only had four pair to begin with, those got washed and dryed a lot. I can't tell if they shrunk since I only tried them after washing. Sorry I forgot to compare the size of the new ones to the older ones before I threw them in the washer. I'll probably buy another set and compare at that time. One thing I can report is that they do not fade at all. I just washed the black, purple and red colors with the white color and the white is still completely white. Now I have more colors and I'll probably be walking around in my underwear and no one will know. The only con I can think of is the wide crotch wouldn't work well with pads with wings, in my opinion. Try a size larger for a nice cool pair of sleeping shorts to see how they fit while they are on sale. Then go smaller if needed. I think you might enjoy these.
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Reviewed in the United States on July 10, 2024
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Verified Purchase
Shannon
Port Orchard, US
★★★★★ 5
So comfortable and worth the buy
Size: Large, Color: Black
So comfortable!!! There is no seam in the butt and under neath, only in the front but it is really soft and non irritating. I got these for post partum but I’m already wearing them at 8.5 months pregnant. They’re probably my favorite undies right now. The length is also perfect and the material is very soft and stretchy. The waist band is the same, soft and stretchy.
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Reviewed in the United States on April 11, 2026
J
Verified Purchase
Jeanne
Alexandria, US
★★★★★ 3
Cotton Blend Was Just Too thick
Size: 3X-Large, Color: Black
I was surprised by how thick these boxers were, thicker than my jeans, much thicker than my PJs! Thick enough that I could wear them outside the home without jeans. In spite of the thickness, they were soft and very comfortable. The 3XL is a perfect fit on my 5’2” apple shaped, short waisted 215 lb body. The boxer cut helped prevent chafing, a major plus. Menstrual pads, with or without wings, do not adhere to this material, a major minus. Ultimately, feeling like I was wearing jeans to bed or wearing two pairs of pants outside the home, was just too uncomfortable for me. So disappointed because these boxers were such a great and comfortable fit.
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Reviewed in the United States on April 4, 2026
C
Verified Purchase
Charlie Horse 75
Omaha, US
★★★★★ 5
Great fit!
Size: Large, Color: Beige
Most comfy undies THANK YOU!
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Reviewed in the United States on May 22, 2026
L
Verified Purchase
Lindsay
Massapequa, US
★★★★★ 5
Love the "B00" Colors, but the "RX" colors are a totally different boyshort!!!!
Size: 3X-Large, Color: B004
The packs that have a color name starting with "B00" are fantastic! I bought the black and grey ones, and a set of the multi-colored ones, and they are the best boyshorts, ever!!! I attest to this now, after 6 months of everyday wear and wash. This first part of this review is only for boyshorts that have a color name starting with "B00"! Read the end for my review of the ones with a color that starts with "RX". Completely different panty. The B00 colors are sewn impeccably well, and they are a beautiful, quality material that resembles very thick, very soft leg stockings (panty hose). They stretch easily in every direction, so they hug your curves perfectly. These are not cotton! I hate cotton undies. These are nylon, or something synthetically similar. Unlike stockings, I think it would be very difficult to put a snag in the material because of how much thicker the material is than stockings. I actually tried to snag them with my torn finger nail just to see, but the material is very strong, so I could not put a run in them. Even though these are thick and soft, they dry remarkably fast, because of the looser weave of the synthetic material. They do not roll at all at the waist or on the legs, and I am a very curvy girl, so if they were going to roll, they would definitely roll on me. They wash very well. I've machine-washed them all weekly for 6 months now, and also tumble dried them on the low setting, at a laundromat. No issues at all with fading, color-bleed. shrinking, ravels, and no pilling. These are definitely my everyday undies. One really nice feature is that since these are tagless, they sewed a few raised lines of soft stitching in the back, so you'd always know where your rear-end goes. One thing some people may not like, is that there is no separate liner on the crotch. It is pretty much the same material as the rest of the panty, but a bit thicker, with an extra light layer of lighter-colored stitching incorporated into the inside of the fabric, to make it a bit more absorbent. I actually prefer this, because it means they dry faster, and they are less likely to fall apart in the gusset, but some people may prefer the extra liner of fabric that is typical for most undies. These are not binding at all, so not a shaper panty by any means, but they are certainly very comfortable and stay where you put them. I would think these would be fantastic for backpacking (I love backpacking!) for all the features I mentioned. I have micromodal boy shorts by meundies that I used to wear for hiking, but I will definitely wear these instead because of the reduced drying time after washing, or when sweating. The other micromodal bamboo/cotton-like materials just hold too much moisture for hiking. Undies that retain moisture can cause painful chafing, and can even contribute to hypothermia. I love these! I am buying more!! REVIEW UPDATE! Well, I did buy more. I bought the 5-pack of color that starts with "RX", and I was super disappointed! The "RX" ones are NOTHING like the "R00" ones I described above. Look closely at the pictures. Those ones with a different fabric panel on the hip are tight, not nearly as stretchy, roll instantly on my inner thighs, dip in the back, are not nearly as soft, and do not dry quickly. They are a completely different boyshort, and I do not like "RX" model of boyshort at all. I suppose if you had no meat on your thighs and you wanted a shaper-type panty, the "RX" might be exactly what you're looking for, but not for me, for sure.
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Reviewed in the United States on June 8, 2024

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