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E1DA COSMOS APU Analog Processing Unit Preamplifier / Microphone Preamplifier

The E1DA Cosmos APU is the first product of its kind available on the market. The name APU stands for Analog Processing Unit. 

Average votes for this product
5.0 / 5
  Based on 2 customers reviews.

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Reference : 17080
New product

199,00 €tax incl.

165,83 € tax excl.
Including 0,05 € for green tax

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Shipping date: 22-11-2024.

Orders placed before 12h (GMT+1) will generally be shipped the same day (working day).

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2 Years warranty

Accessories for this product

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E1DA Cosmos APU

Analog Processing Unit Preamplifier / Microphone Preamplifier

E1DA Cosmos APU Unité de Traitement Analogique Préamplificateur / Préamplificateur Microphone

The E1DA Cosmos APU is the first product of its kind available on the market. The name APU stands for Analog Processing Unit. This one is composed of two distinct sections, with different utilities, each integrating an input and an output Jack 3.5mm TRRS. The E1DA Cosmos APU can be used in the following ways:

  • To measure the distortion level of a DAC or amplifier at 1Khz/10kHz and at harmonic levels lower than -150/-130dB or the THD+N at 1kHz down to -132dB. In this case of use, it is necessary to use the Notch part of the Cosmos APU.
  • To measure the dynamic range and the signal to noise ratio of a DAC or amplifier with the residual noise of the APU of 130nVrms(A). In this case, it will be necessary to use the Preamp section of the Cosmos APU.
  • To rip vinyl records with the Preamp section of the Cosmos APU associated with the Cosmos ADC (sold separately) and its integrated RIAA DSP. In this case we invite you to download and use the file CosmosAdc_v13_RIAA.hex available in the downloads tab of this page.
  • To use a professional condenser microphone with 48V phantom power supply. In this case, the Preamp section of the E1DA Cosmos APU is used.

The input voltage of the APU must be less than or equal to 3.5Vrms for its Preamp section and less than or equal to 10Vrms for its Notch section. An overvoltage of the inputs could damage the device.

To avoid accidentally activating the phantom power supply and thus damaging the device under test and connected to the Preamp input, a small red blocking bar has been placed in the 48V power supply switch. This must be removed when using the APU with a condenser microphone.

The 48V power supply should only be used with a condenser microphone. If the power supply has been activated, wait at least 10 seconds before connecting another device to the APU.

The performance of the APU on the second harmonic (H2) depends on the balance of your equipment/test bench. It is best to use an external battery, USB isolator or battery powered laptop for the ADC after the APU. Often a balanced error will be detected if the H2 levels are different after a change in input polarity.


Simplified diagram of Notch section

E1DA Cosmos APU Unité de Traitement Analogique Préamplificateur / Préamplificateur Microphone

Technical characteristics

Specifications
Product typeAnalog Processing Unit
Preamplifier
Microphone preamplifier
Inputs2* Jack 3.5mm TRRS
Outputs2* Jack 3.5mm TRRS
Notch inputLevel up to 10Vrms
Gain = 20dB (adjustable +0/6dB)
Zi = 20/10kΩ unbal/bal
Notch ratio = -30dB @ 1kHz/10kHz (switchable)
Residual noise: 950nVrms(A) typical (gain 20+6dB, FNotch = 1kHz)
Residual distortions @ 1kHz, 4.5Vrms, 2nd/3rd: < -150dB/-150dB
Residual distortions @ 1kHz, 9Vrms, 2nd/3rd: < -150dB/-160dB
Residual distortions @ 10kHz, 4.5Vrms, 2nd/3rd: < -130dB/-130dB
Residual THD+N 20Hz-20kHz @ 1kHz, 9Vrms: < -131dB Unweighted
Residual THD+N 20Hz-20kHz @ 1kHz, 4.5Vrms: < -127dB Unweighted
Preamp inputLevel up to 3.5Vrms
Gain = 34/60dB
Zi = 47/23.5k unbal/bal
Input capacitance: 100pF
Residual noise: < 130nVrms(A) typical @ gain +60dB
Residual noise: < 260nVrms(A) @ gain +34dB
Dynamic range Preamp->Notch @ 1kHz -60dBFS (10mVrms): > 153dB(A)
Dynamic range Preamp->Notch @ 1kHz -60dBFS (5mVrms): > 150dB(A)
Phantom power supply: 48VDC ±4V 2x6.8kΩ
Frequency responseNotch: 5Hz-200+kHz FNotch=1k
Preamp: 10Hz-1MHz+ -3dB @ gain = 60dB / 10Hz-5MHz+ -3dB @ gain = 34dB
Preamplification chipTHAT1510
OPAOPA1612
RT6863S
General
Supply voltage5VDC via USB-C
Dimensions (L*P*H)61*104*39mm
Weight157g
Housing materialAnodized aluminum
ColorBlack
E1DA Cosmos APU Unité de Traitement Analogique Préamplificateur / Préamplificateur Microphone

REW with calibration file DAC+LPF -> Cosmos APU -> Cosmos ADC



E1DA Cosmos APU Unité de Traitement Analogique Préamplificateur / Préamplificateur Microphone

AES17 dynamic range test performed at -60dBFS by measuring the A-Weighted THD+N. This graph shows the residual THD+N (A) of the LNA at a sweep level of 1-10mV.



E1DA Cosmos APU Unité de Traitement Analogique Préamplificateur / Préamplificateur Microphone

MM 5mV 10Ω source, APU gain 34dB CosmosADC+digital_RIAA 1.7V sensitivity
THD+N -89dB or -97.7dB(A)



E1DA Cosmos APU Unité de Traitement Analogique Préamplificateur / Préamplificateur Microphone

MC 250uV 10Ω source, APU gain 60dB Cosmos ADC 1.7V sensitivity, THD+N -66dB or -78dB(A).

 
Data sheet
InputJack 2.5mm
OutputJack 3.5mm
ColorBlack
ClassN/A
Remote ControlNo
 
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Average votes
5.0 / 5
2 reviews
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Note :
 5/5
Date :
Well conceived and versatile device perfectly fit for lab usage
Accurately correspondent to specifications, perfectly fit for laboratory use, excellent support with ample explanations by the designer in Audiosciencereview's dedicated thread. Five stars.
 (0)
 (0)
This review has been posted for E1DA COSMOS APU Analog Processing Unit Preamplifier / Microphone Preamplifier
Note :
 5/5
Date :
Well conceived and versatile device perfectly fit for lab use
Accurately correspondent to specifications, perfectly fit for laboratory use, excellent support with ample explanations by the designer in Audiosciencereview's dedicated thread. Five stars.
 (0)
 (0)
This review has been posted for E1DA COSMOS APU Analog Processing Unit Preamplifier / Microphone Preamplifier
See more reviews 
 
E1DA COSMOS APU Analog Processing Unit Preamplifier / Microphone Preamplifier
E1DA COSMOS APU Analog Processing Unit Preamplifier / Microphone Preamplifier
The E1DA Cosmos APU is the first product of its kind available on the market. The name APU stands for Analog Processing Unit. 

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