Description
E1DA Cosmos Scaler High Performance Low Noise and Distortion Audio Preamplifier with Variable Gain
Specification:
- Material and surface processing: aluminum + black oxide sandblasting + laser engraving
- Main components: OPA1612, OPA1656, for Viking resistor, for Murata/Samsung C0G capacitor
- Size: 104 x 61 x 39mm (PCBA: 90 x 50 x 29mm)
- Weight: 160g (PCBA: 40g)
- Power supply: USB-C, +5VDC, <500mA static current
Input:
- 2 channels balanced 200/100kohm bal/unbal.
- 3.5mm jack up to 20/10Vrms bal/unbal.
- If only the left input is inserted, the signal will pass through the right channel to achieve the MONO mode of Cosmos ADC.
- Cosmos APU's short cable is also suitable for Scaler.
Output:
- 2 channels balanced 20/10ohm bal/unbal.
- 3.5mm jack up to 20/10Vrms bal/unbal.
- Cosmos APU's short cable is also suitable for Scaler.
Variable Gain Table:
- 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, 26.078db.
- 16 positions are controlled by knobs.
- When the knob is in the "automatic" position, it is similar to a super fast automatic regulator (100mS), with a target voltage of 4.5Vrms for the left channel.
- The output voltage of the right channel can be ignored.
- The frequency range of the effective automatic rangefinder is 20Hz-20kHz.
Indicators (each channel on the front panel):
- 1.7Vrms < Blue LED < 4.5Vrms
- 4.5Vrms < Green LED < 10Vrms
- Red LED > 10Vrms
Frequency Response:
- 0.2Hz-570Hz at 26db gain +0.5/-3db; 0.2Hz-7~11MHz at 0db gain 10MHz region
- Depends on the cable capacitance (the output of the calibrator can remain stable within a microphone cable of up to 7 meters)
Residual Noise:
- 250nVrms (A) at 26dB gain (typical value)
Distortion:
- Due to the huge loop gain OPA1612 + OPA1656 (170dB at 1kHz / 130dB at 10kHz), the distortion compared to Cosmos ADC or H3 -175dB at 1kHz about 100 times lower (at 0dB gain)
Crosstalk:
- L ->R: -133db at 1kHz
- R ->L: -158db at 1kHz
- Not using input short circuit at 0dB gain.
Package Included:
- 1 x Preamplifier
Specification:
- Material and surface processing: aluminum + black oxide sandblasting + laser engraving
- Main components: OPA1612, OPA1656, for Viking resistor, for Murata/Samsung C0G capacitor
- Size: 104 x 61 x 39mm (PCBA: 90 x 50 x 29mm)
- Weight: 160g (PCBA: 40g)
- Power supply: USB-C, +5VDC, <500mA static current
Input:
- 2 channels balanced 200/100kohm bal/unbal.
- 3.5mm jack up to 20/10Vrms bal/unbal.
- If only the left input is inserted, the signal will pass through the right channel to achieve the MONO mode of Cosmos ADC.
- Cosmos APU's short cable is also suitable for Scaler.
Output:
- 2 channels balanced 20/10ohm bal/unbal.
- 3.5mm jack up to 20/10Vrms bal/unbal.
- Cosmos APU's short cable is also suitable for Scaler.
Variable Gain Table:
- 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, 26.078db.
- 16 positions are controlled by knobs.
- When the knob is in the "automatic" position, it is similar to a super fast automatic regulator (100mS), with a target voltage of 4.5Vrms for the left channel.
- The output voltage of the right channel can be ignored.
- The frequency range of the effective automatic rangefinder is 20Hz-20kHz.
Indicators (each channel on the front panel):
- 1.7Vrms < Blue LED < 4.5Vrms
- 4.5Vrms < Green LED < 10Vrms
- Red LED > 10Vrms
Frequency Response:
- 0.2Hz-570Hz at 26db gain +0.5/-3db; 0.2Hz-7~11MHz at 0db gain 10MHz region
- Depends on the cable capacitance (the output of the calibrator can remain stable within a microphone cable of up to 7 meters)
Residual Noise:
- 250nVrms (A) at 26dB gain (typical value)
Distortion:
- Due to the huge loop gain OPA1612 + OPA1656 (170dB at 1kHz / 130dB at 10kHz), the distortion compared to Cosmos ADC or H3 -175dB at 1kHz about 100 times lower (at 0dB gain)
Crosstalk:
- L ->R: -133db at 1kHz
- R ->L: -158db at 1kHz
- Not using input short circuit at 0dB gain.
Package Included:
- 1 x Preamplifier
Payment Terms
1. We accept PayPal,Payoneer,Visa Card,Google pay,Credit card etc.
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Shipping Terms
1. We will process the order within the handling time ,if you have any questions, please contact us via eBay message or email.
2. For remote regions of DHL/FedEx..., extra shipping costs might be charged. Usually it costs about 30USD-50USD. We will contact you if shipping company informed us your address belongs to remote area. Thanks for your understanding.
2. For remote regions of DHL/FedEx..., extra shipping costs might be charged. Usually it costs about 30USD-50USD. We will contact you if shipping company informed us your address belongs to remote area. Thanks for your understanding.
Return Terms
If you receive the item that not satisfied or defective, please do not open case and kindly notify us within 30 days. We will guide you the returning process for replacement or refund.
Custom Duties & Taxes
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2. Please check with your country's customs office and inform us what/how much should declare before shipping.
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Feedback
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2. If you are dissatisfied for any reason, please don't be quick to leave us neutral or negative feedback. We work hard to make sure EVERY CUSTOMER 100% SATISFIED and resolve any problem for you and always leave positive feedback to all our customers.
2. If you are dissatisfied for any reason, please don't be quick to leave us neutral or negative feedback. We work hard to make sure EVERY CUSTOMER 100% SATISFIED and resolve any problem for you and always leave positive feedback to all our customers.
On Nov 26, 2024 at 03:45:16 PST, seller added the following information:
