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Description
E1DA Cosmos Scaler High-Performance Low-noise Low-distortions Variable Gain Pre-AMPSpecifications: Device purpose: Ultra low THD+N variable gain buffer for Cosmos ADC Materials: Sandblasted black anodized aluminum laser mark OPA1612+OPA1656 composite,Viking resistors,Murata, Samsung C0G caps, Taiwanese connectors relays Dimensions: PCBA 90x50x29mm104x61x39mm Weight: PCBA 40g 160g Power: USB C +5V rail, <500mA current Input: 2 channels balanced 200 100kOhm bal unbal 3. 5mm jack up to 20 10Vrms bal unbalIf only the left input is
Specifications:
Device purpose: Ultra-low THD+N variable gain buffer for Cosmos ADC
Materials: Sandblasted/black anodized aluminum/laser mark/OPA1612+OPA1656 composite,Viking resistors,Murata, Samsung C0G caps, Taiwanese connectors/relays
Dimensions: PCBA 90x50x29mm104x61x39mm
Weight: PCBA 40g / 160g
Power: USB-C +5V rail, <500mA current
Input:
2 channels balanced 200/100kOhm bal/unbal
3.5mm jack up to 20/10Vrms bal/unbal
If only the left input is plugged, the signal is routed to the right channel as well, to implement MONO mode for Cosmos ADC. Cosmos APU's short cables are suitable for Scaler as well.
If only the left input is plugged, the signal is routed to the right channel as well, to implement MONO mode for Cosmos ADC. Cosmos APU's short cables are suitable for Scaler as well.
Output:
2 channels balanced 20/10hm bal/unbal
3.5mm jack up to 20/10Vrms bal/unbal
Cosmos APU's short cables are suitable for Scaler as well.
Variable gain table: 3.5mm jack up to 20/10Vrms bal/unbal
Cosmos APU's short cables are suitable for Scaler as well.
in db 0, 7, 10.7, 13.38, 15.788, 17.38, 18.673, 19.844, 21.08, 21.98, 22.764, 23.513, 24.336, 24.965, 25.527, 26.078
16 positions controllable by the knob, in the "Auto" position Scaler works like a ultrafast autoranger(100mS) with the left channel target 4.5Vrms.
The right channel output voltage is ignored. 20Hz-20kHz is the valid frequency range for autoranger.
Frequency Response:
.2Hz-570kHz @ 26db gain +.5/-3db, .2Hz-7..11MHz @ 0db gain 10MHz area depends on a cable(Scaler's output is stable up to 7m of mic cable) capacitance
Residual Noise:
250nVrms(A) @ 26db gain typical
The only indirect measurement method is available at such a low level due to a huge loop gain OPA1612+OPA1656 composite(170db@1kHz/130db@10kHz)
Something like 100x times less than Cosmos ADC or H3 -175db@1kHz at 0db gain
Crosstalk:
Something like 100x times less than Cosmos ADC or H3 -175db@1kHz at 0db gain
L->R -133db, R->L -158db@1kHz unused input is shorted @0db gain
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- 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
4.3 ★★★★★
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IRobot Roomba 3 year warranty
My roomba stopped working as it should. It took two claims to get things taken care of but at the end, I was given a gift card for the original purchase price, which I used to buy a brand new roomba. 😁 so im satisfied and purchased another warranty for the new one.
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Reviewed in the United States on February 2, 2026
★★★★★ 5
Great insurance!
It worked wonders for me! I sent back my vacuum after a year of using it because a broken spinning wheel and they repaired it. Then, three weeks before the insurance cover expired, a lightning storm occurred in my area and my vacuum didn’t work anymore, they said they couldn’t fix it and they sent me a full refund. Of course I’ll recommend Asurion insurance!
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Reviewed in the United States on July 18, 2025
★★★★★ 1
Do not purchase. BBB will help
Don’t waste you money on this if you’re purchasing a vacuum costing you 6-700.00 or more. We have completed the claims process twice so far, called more time than I like to admit. Bought extremely large boxes and packaging and tape. Drove to ups, waited for ups only to not have our unit repaired. This last claim which was 24 hrs after we received the “fixed” item back was in the companies possession for just two hours when we were sent a msg stating they could not repeat the issues and it was on it’s was back AGAIN. So without a working vacuum for weeks it is now headed back with the same issues. The customer service line assure us they would not let it ship out and would instead keep it and a supervisor would check it and found but 10 minutes after my call I received a tracking number. Save yourself the headache and insure through someone else. Vac sounds like a power saw with rocks in it and won’t clean. Company see that as normal. Told many lies and still repair/.refund
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Reviewed in the United States on July 21, 2025
★★★★★ 5
Delivered on What They Promised
Bought an iRobot Roomba i4+ about 1 1/2 years ago and saw this as an option for a protection plan. I was skeptical, as I know that plans similar to this one can be filled with contractual Loop holes that do not benefit the buyer.
HOWEVER, this one is legitimate and came through for me when my vacuum was essentially falling apart…as I was reimbursed the full amount that I paid for it.
I just purchased another iRobot, along with the same protection plan……so, from my experience, I highly recommend it.
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Reviewed in the United States on September 10, 2024
★★★★★ 5
Quick, Simple, and Stand Behind what they sell.
Filed a claim and immediately received a response with instructions. Once I mailed the defective product, with the provided mailing label, I received my refund. Quick, simple, and honest.
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Reviewed in the United States on March 26, 2026
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