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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
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4.7 ★★★★★
Based on 2496 reviews
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Product Reviews
★★★★★ 5
Love these books. Better for alcohol markers
Format: Paperback, Format: Paperback
I like these coloring books because of the designs, thw fact that the back page is empty (thinking of bleeding) and the amount of drawings on the book. Meaning, its worth for the money. These are cute.
Alcohol markers: these pages are made for this kind of markers. They blend well.
Acrylic markers: these are not the best pages for these markers. Need to re-do strokes to get good coverage. Are not porous enough. Meaning, I can see the strokes on these pages; but, in other type of paper, the acrylic markers work better with single strokes.
First picture: acrylic marker (see the strokes)
Second picture: bleeding on back of paper (alcohol marker)
Third picture: alcohol markers (other Coco Who book)
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Reviewed in the United States on May 14, 2026
★★★★★ 5
Grab one of these for some relaxing coloring therapy!
Format: Paperback
such an adorable coloring book! I would recommend this for adults who like to color as well as children. Coloring pages are cute, easy pictures to color -nothing complicated. Everything is large enough to color easily. I look forward to sitting down with this coloring book and getting some stress-free time coloring.
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Reviewed in the United States on April 10, 2026
★★★★★ 5
Cute
Format: Paperback
Love this coloring book. Cute pictures.
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Reviewed in the United States on May 23, 2026
★★★★★ 4
Charming Coloring Book — Fun for All Ages
Format: Paperback
This coloring book has quickly become a favorite in our house! The illustrations are adorable and relaxing, making it just as enjoyable for adults as it is for kids. My daughter and I have spent hours coloring together, and it’s been a great way to unwind after school or on quiet weekend afternoons.
What I love most is how versatile it feels — the designs range from simple and playful to more detailed, so everyone finds pages that match their mood and skill level. It’s also a fun way to keep little hands engaged without screens.
Whether you’re looking for a creative activity to share with your kids or a gentle, artistic escape for yourself, this coloring book delivers plenty of charm and enjoyment.
The only reason giving 4 stars is because of the price. Although the book is great, I do not think it is worth almost $10.
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Reviewed in the United States on December 30, 2025
★★★★★ 5
love coloring in these
Format: Paperback
always adorable pictures!!!
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Reviewed in the United States on May 23, 2026