SKU: 52066789297

GUSTARD A20H / XMOS PCM/DSD USB DAC Double AK4497 Headphone Amplifier

$338.40 $376.00
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Description

GUSTARD A20H / XMOS PCM/DSD USB DAC Double AK4497 Headphone AmplifierGeshide GUSTARD A20H XMOS USB PCM DSD DOP DAC Decoding Machine Double AK4497 Headphone Amplifier Highlight 1. Dual AK4497 class A full balance amp,native full balance. 2. Decoder and amplifier all in one ,well proportioned,double power supply design. 3. Clock management ,2nd PLL digital plastic,DOP demodulation modem,PCM DSD depop switch and other exclusive technology. 4. All interfaces support DSD decoding,digital broadcasting,USB supports 384K

Geshide /GUSTARD - A20H  XMOS USB PCM/DSD DOP DAC Decoding Machine Double AK4497 Headphone Amplifier

Highlight

1.  Dual AK4497 class A full balance amp,native full balance.
2.  Decoder and amplifier all-in-one ,well proportioned,double power supply design.
3. Clock management ,2nd PLL digital plastic,DOP demodulation/modem,PCM/DSD depop switch and other exclusive technology.
4. All interfaces support DSD decoding,digital broadcasting,USB supports 384K DSD256.
Technical features
1. The latest hi-end AKM AK4497EQ decoding chips, make no interference in L/R channels and purer sound
2.  Clock management ,2 nd PLL digital plastic,DOP demodulation/modem,PCM/DSD depop switch and other exclusive technology.
3.  Using full discrete component large current hi-end full-balanced amplifier,each channel uses two separated amplifier unit to form asymmetric output circuits.
4.  Native full balance architecture, there is no any transition from DA to amp circuits,it is a complete four-way output volume.
5.  Using two customized 50w audio specialized ring transformers to supply power separately to the amp and decoder,so that their power supply has no interference to each other.
6.  Using own-created individual analog LPF cirtuits,the parameters of each level has been carefully adjusted to achieve the best conditions.
7.  The all interfaces support DSD decoding :IIS supports DSD64,DSD128,DSD256,DSD512 decoding; SPDIF,Optical,AES/EBU support DSD64 decoding(DOP mode); USB supports SD64,DSD128,DSD256 decoding.
8.  Rich digital filtering,two kinds of DSD: Wide BW/Narrow BW;six kinds of PCM: Short Delay Shar p / Short Delay Slow / Shar p / Slow / Low-dispersion Short Delay Filter/ Super Slow.
9.  Adjustable screen brightness:it will return to the default brightness after 30s’no-operation;it will automatically remember the current brightness,and the next time you start up, it will keep the last setting.
10.  The USB uses the USBAUDIO specialized U8 chip from XMOS,it can support PCM384, DSD256.
11.  Full aluminum alloy box,two colors(silver and black) are available.
Parameters:
Size:330*260*65 mm(w*d*h)
Size with package:420*360*175 mm(w*d*h)
Weight with package:6.5kg
Voltage:AC100v-240v
Frequency response:20Hz-20kHz+/-0.1dB
Output circuit(turning off the pre-amp):RCA output level: 2.0Vrms@0dBFS, XLR output level : 4.0 Vrms @0dBFS
XLR interface:American standard (1 ground wire,2 positive line,3 negative line)
Earphone max output power: 2400mW@32Ω
Load power:
32Ω         2400mW
64Ω         1230mW
150Ω         530mW
300Ω         264mW
600Ω         132mW
Rigorous design,rational layout,clean workmanship,excellent materials

 

Analog LPF circuit using Fully discrete circuit  Class-A line.

Fully discrete circuit  Class-A work flexibility. It is free to adjust the parameters of each level.

Technical experience and long debugging process, to achieve the best working condition.

AK4118 receive demodulation - sent to the CPLD for processing;

CPLD programmable logic chip, self-built logic functions of digital integrated circuits, clock management, 2nd PLL digital shaping, DOP demodulation, PCM / DSD depop switch and other exclusive technology;

Fully discrete circuit High Current Pure Class-A Balanced Headphone Amplifier.

Professional team design.

The input stage adopts audio special low-noise tube, full-DC amplification, carefully debug each level work in the best working condition.

The final stage use 4xMedium power tube, Big Output Power, most of the headset to play the best results;

2X50W custom toroidal transformer.Completely independent power supply, do not interfere with each other.For high-quality sound to provide better power supply environment and power;

filtering and voltage regulation. To ensure clean and stable power supply;

Relay array, 60 files simulation of lossless volume adjustment;

XOMS U8 USB Professional SOUND CARD:

XMOS USB using the latest and highest-level U8 (8 core) USB AUDIO scheme,

PCM highest support 32Bit 384K,

DSD Support DSD64 (2.8224MHz), DSD128 (5.6448MHz), with leading system compatibility:

Compatible includes 32/64-bit Microsoft Windows XP, WindowsVista, Windows7, Windows8, Windows 8.1, Windows 10 and other mainstream Windows systems, supports Apple MacOSsystems, Linux kernel support system, and is compatible with partial support OTGfunction of iOS, Android smart devices .

American  ACCUSILICON femtosecond crystal;

Full interface supports DSD.

IIS supports DSD64, DSD128, DSD256, DSD512;

USB support DSD64, DSD128, DSD256;

Coaxial / fiber / AES / EBU support DSD64 (DOP mode);

 

Frequency response

THD+N

SNR

Headphone amplifier 2-channel each connected 32Ω load,Output power at 2400mW: distortion and waveform.

I2S Pin definition

 
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 52066789297

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4.9 ★★★★★
Based on 11 reviews
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Product Reviews
M
Verified Purchase
Mr. Ruiz
Lexington, US
★★★★★ 2
Flimsy
Color: Grey, Size: B-88''W-4 Panel
Would not recommend
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 14, 2026
K
Karen A.
Pawtucket, US
★★★★★ 5
Great option for a professional looking backdrop
Color: Black, Size: B-102''-3 Panel
I decided to try these wall dividers for my home office space since it does not have a door. I wanted to have my video calls without the rest of the room in the feed to give it a more professional feel. These being on castors make them super easy to move into position and roll off to the side when not in use. They are stable, much more than the folding screens I have tried in the past. That they are connected by the middle piece and not the top/bottom of each other allows you to adjust the positioning to your needs. Overall, this did exactly what I needed and was an affordable option. I also like that they are highly portable: if you want to take them for a booth or event, the poles all disassemble into manageable lengths that easily fit in a car and take very little time to set up again. The only thing I would change is to include a bag to store them in for transportation.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 17, 2025
B
Verified Purchase
Barbara McCloud
Whiting, US
★★★★★ 5
Nice and strong
Color: Black, Size: Wheel-6 Panel
Nice and strong, tedious, putting together, but very good quality
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 17, 2026
A
Verified Purchase
Al Tompkins
New York, US
★★★★★ 5
if you are going to be moving them a lot, buy something more sturdy.
Color: Black, Size: Wheel-6 Panel
I use these at our churchc. They are pretty good, not terribly study and the screw that hold the faabric have pulled out in a couple of places. But they wqould work especially well if you were not constantly moving them as we do. They are a bit of a pain to assemble.
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Reviewed in the United States on January 20, 2026
J
Verified Purchase
Julie Lincoln
Omaha, US
★★★★★ 4
Easy to put together , decent quality
Color: Black, Size: Wheel-6 Panel
Purchased for office, easy to put together , durable quality , exactly what we needed to partition a small space
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 15, 2025

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