SKU: 78565801962

E1DA 9038D6K USB Headphone Amp 3.5mm Jack Unbalanced Output DAC+HPA

$121.50 $135.00
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Description

E1DA 9038D6K USB Headphone Amp 3.5mm Jack Unbalanced Output DAC+HPANote: Before you buy this product, please read the FAQ carefully. https: e1dashz. wixsite. com index faq Welcome to join our discord channel. https: discord. gg U9Z28KC #9038D6K According to multiple headfiers requests: 3. 5mm jack unbalanced output DAC+HPA 180mW@32ohm in the same case as #9038SG3. The same as 9038SG3, 9038D6K will work with Tweak app. The DAC has virtually zero noise modulation behavior. Specifications: Status: Production Materials:

Note: Before you buy this product, please read the FAQ carefully.

https://e1dashz.wixsite.com/index/faq

Welcome to join our discord channel.

https://discord.gg/U9Z28KC

 

 

#9038D6K

According to multiple headfiers requests: 3.5mm jack unbalanced output DAC+HPA 180mW@32ohm in the same case as #9038SG3. The same as 9038SG3, 9038D6K will work with Tweak app. The DAC has virtually zero noise modulation behavior.

Specifications:

Status: Production

Materials: Sandblasted/black anodized aluminum/laser mark/ES9038Q2M/OPA1622/OPA1602

Susumu resistors, Murata C0G caps, AVX tantalum caps, Taiwanese connectors
Dimensions: 48x22x9mm
Weight: 12g
Power: USB +5V rail no internal battery, 105mA idle current, the device contains >6000uF of capacitance for the power rails filtering
Input: USB-C, PCM up to 32b/384kHz, DSD256
USB bridge Comtrue CT7601CR custom FW
Output: Standard unbalanced output 3.5mm jack, HW volume control .5db/step
Output impedance: .07 Ohm@1000Hz Agilent U1733C
Output power:
180mW@32 Ohm@1kHz@THD=1%
120mW@16 Ohm@1kHz@THD=1%
Measured at +.5dbFS level, typical PC USB2 port powered
The hot unit produces less power
Frequency Response: 5-80kHz +.05/-1db@ 32b/384kHz
SNR=DR@50MHz_MCLK:  126db(A) typical, referenced to 2.75VRMS

100% units are calibrated with the result printed on the case, >124db(A) is normal grade
Please note, any user with Cosmos APU may calibrate 9038D by themself for particular headphones.
INAD@[email protected] BW 22-22kHz 118-120+db typical for 32b/44.1kHz@no-load
THD@[email protected] BW 22-22kHz <.0001% typical for 24b/44.1kHz@no-load
THD+N@[email protected] BW 22-22kHz .00018%, SINAD 115db typical 24b/44.1kHz@32ohmTHD+N@1kHz@-7dbFS BW 22-22kHz .0005% typical for 24b/44.1kHz@16ohm(-6dbfs correspods 120mW)
Crosstalk: -135db@1kHz no-load,
-82db@1kHz 32ohm load
The Windows driver is here.
FW tools are here
Warning: 9038D6K contains a high-sensitive I/V stage that may cause audible noise when your phone uses LTE,4G,5G.
 

Tech appendix

Conventional PC USB2 port, 10Kohm vs 32ohm loads THD+N

 

Conventional PC USB2 port, 10Kohm load THD+N vs time

 

Conventional PC USB2 port, 32ohm load THD+N vs time

 

Conventional PC USB2 port, AES17 Dynamic Range A-weighted vs time

 

Frequency response PCM384 Slow Lin. Phase filter 10-40000Hz at -0.2db
 

 

Nearly ideal square wave 1kHz PCM384 Slow Lin.Phase filter at 200MHz BW scope

 

Square wave 1kHz PCM192 Slow Lin.Phase filter at 200MHz BW scope

 

Square wave 1kHz PCM96 Slow Lin.Phase filter at 200MHz BW scope

 

Square wave 1kHz PCM44.1 Slow Lin.Phase filter at 200MHz BW scope

 

24b/44.1kHz 1kHz -0.5dbfs FFT no load

 

24b/44.1kHz 1kHz -2dbfs 150mW FFT 32ohm load

 

24b/44.1kHz 1kHz -2dbfs 40mW FFT 32ohm load

 


24b/48kHz 12kHz -2dbfs FFT no load


 

 

 

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
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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: 78565801962

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Amy Wilson
Massapequa, US
★★★★★ 5
I originally got the King set & loved it so much I ordered another in Queen size!
Color: Charcoal, Size: King
I didn't add a picture because the advertised picture is exactly what it looks like (and my beds not made at the moment, lol). It's so soft, comfortable, cosey and warm. It's thicker and fluffier than I expected, but still very lightweight. The price was great for a king size bed with 2 king sized pillow cases! I love it so much I ordered a second set in Queen size, just to have the cases for my smaller queen pillows that go in front of the King pillows and to have the extra blanket as a cozy throw. The only drawback is it does snag easily on rings, fingernails, etc. (also another reason I ordered the second one to lay across the places that I've snagged & a few that were already snagged when I got them). However, it's so cozy that I didn't want to go through the hassle of sending it back and having to wait for a new one! I'm very glad that it was suggested as an add on when I ordered the mattress pad & that I chose to add it on. I'd definitely recommend it to anyone!
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Reviewed in the United States on January 23, 2023
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Everyday Joe
Chelsea, US
★★★★★ 5
Comforter
Color: Charcoal, Size: King
Great value very soft very warm as well as being lite weight.
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Reviewed in the United States on April 14, 2026
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Christina Billings
Grantham, US
★★★★★ 5
Favorite Winter Bedding!
Color: Red Buffalo Plaid, Size: King
Cozy, warm, and so so soft! Washes up beautifully! A great bed set for the cost. Thank you!
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Reviewed in the United States on January 27, 2026
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Linus' Mama
Waukegan, US
★★★★★ 5
Love it!
Color: Red Buffalo Plaid, Size: Full/Queen
Instantly became my favorite comforter for winter months. Colors are vibrant and beautiful; soft and warm; appears to be durable. I would get another of it came in others colors. Paired with the Amazon Basics red buffalo plaid sheet set. Matches my pajamas and my dogs’ bandannas perfectly!
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Reviewed in the United States on December 1, 2025
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LadyDeath/TxTunesLady
Grantham, US
★★★★★ 5
Warm, cozy, soft, 💜 love
I don't leave reviews very often (yes that is cliche) I just don't have time. I have been debating for a few months one what I actually wanted to do with my bedroom. Spring is coming and the dark is getting to me and wanted to still get an elegant feel. I have some light baby blue around in my other comforter but I needed lighter brighter. I saw this and how SOFT is looked and I LOVE soft and cozy, who doesn't? I am so glad I took the chance. With that I also ordered the pillow....what I thought were pillows but didn't read very clearly they were just the covers so I ordered pillows then the picture I knew would still be elegant but be able to tie all the peices in and OFF the internet. Sometimes colors are not the same online as in person since monitors are always different shades of a color. Now on to this comforter. I didn't realize it came with the pillow covers. 💜 the set comes vacuum sealed but it is heavy when vacuumed. I undid the packaging a day later when I had time to wash. The cover flew out and I was perplexed, it's a pillow cover!!!! Awesome!!!! Ohhh there's 2, woohoo! Omg it's so soft. Oh I'm in heaven. Mmmmm hugging the pillow cover, I knew this was my kinda softness bed comforter. It is not LIGHT weight like say a throw blanket but it is light vs heavy bulky goose downs even though they say those are light. And when you wash it, its def not heavy if u spin the water out at super high setting on ur washer. I was able to carry it to the dryer fairly easy 20 ft away. This is by far the BEST comforter I bought in my life. I am a hoarder when it comes to comforters. Thinking if I'm ever homeless I'll have lots of somethings to keep me warm. For the price and the quality, (the batting inside doesn't shift when washing) this will be another purchase in the future in another color so I can start a soft collection. I usually give my comforters that I dont use ( the oldest but still perfect condition) to a friend or homeless. Great product!!!!
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Reviewed in the United States on February 6, 2020

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