SONCOZ SGA1 Full Balanced Headphone Amplifier Preamplifier

SONCOZ SGA1
Soncoz unveils with its SGA1 a fully balanced headphone amplifier and preamplifier combo that is extremely powerful and musical. Benefiting from an intelligent and neat architecture as well as a sober and elegant design, it will delight the most demanding audiophiles and music lovers.

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549,17 €tax excl.

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Shipping date: 28-09-2021.

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Soncoz SGA1

Full Balanced Headphone Amplifier Preamplifier

Soncoz SGA1 Amplificateur Casque Préamplificateur Symétrique

Soncoz unveils with its SGA1 a fully balanced headphone amplifier and preamplifier combo that is extremely powerful and musical. Benefiting from an intelligent and neat architecture as well as a sober and elegant design, it will delight the most demanding audiophiles and music lovers.


Test by Audio Science Review

I am going to recommend the Soncoz SGA1 on the strength of its its ability to drive high impedance headphones, nice looks, and perfect channel matching. If these match your criteria, you are good to go.

 test by the measurement forum Audio Science Review

High end connectivity

The SGA1 is equipped with high quality connectors, capable of adapting to both balanced and unbalanced audio systems. Indeed, whether it is for input or output, we find balanced XLR and unbalanced RCA. The headphone output is on the front panel, balanced on XLR 4 pins or 4.4mm jack or unbalanced on 6.35mm jack.

Soncoz SGA1 Amplificateur Casque Préamplificateur Symétrique

One button to rule them all

The front panel of the SGA1 displays a single button that gives access to all the parameters and functions of the device. It allows to select the active input and output, the volume level and the gain level. A bright and readable screen displays all this information.

Soncoz SGA1 Amplificateur Casque Préamplificateur Symétrique

Gain & volume control

The SGA1 embeds a MUSES72320 volume controller offering excellent performance in terms of noise and distortion, as well as a ladder circuit. The volume adjustment is done on a range of -110.75dB to 0dB, by steps of 0.25dB in the case of a gain equal to 0dB or by steps of 0.5dB in the case of a gain different from 0dB.

The adjustment of the gain level, also using a MUSES72320 chip, is limited by the software layer according to the output so as not to generate distortion.

The combination of volume and gain settings for each input and output can be saved independently. When adjusting the parameters in the options menu, the SGA1 mutes the output. Once the adjustments have been made, the output will reactivate gradually to protect your audio system.

Soncoz SGA1 Amplificateur Casque Préamplificateur Symétrique

A perfectly controlled power supply stage

The Soncoz SGA1 benefits from an optimized power supply stage, using high quality components. It includes a custom toroidal transformer with a multi-layer shielding. This one allows to reduce considerably the noise and the harmonics of the frequencies 50/60Hz.

Linear regulators have also been selected to provide a stable, noise-free power supply to all key circuits. The rectifier circuits use two large 8200µF ELNA capacitors to ensure ultra-low ripple.

Soncoz SGA1 Amplificateur Casque Préamplificateur Symétrique

SGA1 & SGD1, a perfect combination

The SGA1 has been designed to work perfectly with the Soncoz SGD1 symmetrical DAC. This set allows you to enjoy an audio system with incredible sound performance, while ensuring a coherent visual integration and design.

Soncoz SGA1 Amplificateur Casque Préamplificateur Symétrique

Technical characteristics

Specifications
Product typeHeadphone amplifier
Preamplifier
Inputs1x Single-ended stereo RCA
1x Balanced stereo XLR
Preamplifier outputs1x Single-ended stereo RCA
1x Balanced stereo XLR
Headphone outputs1x Balanced 4 poles XLR
1x Balanced Jack 4.4mm
1x Single-ended Jack 6.35mm
Headphone amplifiers parameters
Analog inputsXLRRCA
Amplifier outputsSingle-endedBalancedSingle-endedBalanced
THD+N @ 1kHz< -117dB< -118dB< -117dB< -118dB
Freq. @ 20Hz-20kHz±0.1dB±0.1dB±0.1dB±0.1dB
Dynamic range @ 1kHz, A-Weighting< -124dB< -126dB< -124dB< -126dB
SNR @ 50mV, A-Weighting< -92dB< -91dB< -92dB< -91dB
Crosstalk @ 10kHz< -118dB< -102dB< -118dB< -120dB
Output voltage @ V=0, G=04Vrms7.8Vrms4Vrms7.8Vrms
Output impedance0.1Ω0.05Ω0.1Ω0.05Ω
Noise1.8µVrms3.6µVrms1.8µVrms3.6µVrms
Output power @ V=0, G=033Ω420mW420mW420mW420mW
300Ω210mW840mW210mW840mW
600Ω105mW420mW105mW420mW
Preamplifier parameters
Analog inputsXLRRCA
Preamplifier outputsRCAXLRRCAXLR
THD+N @ 1kHz< -117dB< -118dB< -117dB< -118dB
Freq. @ 20Hz-20kHz±0.1dB±0.1dB±0.1dB±0.1dB
Dynamic range @ 1kHz, A-Weighting< -126dB< -126dB< -126dB< -126dB
SNR @ 50mV, A-Weighting< -95dB< -94dB< -95dB< -94dB
Crosstalk @ 10kHz< -132dB< -136dB< -132dB< -136dB
Output voltage @ V=0, G=02Vrms4Vrms2Vrms4Vrms
Output impedance100Ω200Ω100Ω200Ω
Noise1.5µVrms3µVrms1.5µVrms3µVrms
General
Supply voltage110-220VAC (Power cable included)
Consumption< 10W
Dimensions250 x 225 x 55mm
Weight2kg
ColorBlack
 
Data sheet
InputRCA
InputXLR
OutputRCA
OutputJack 6.35mm
OutputXLR
OutputJack 4.4mm
ColorBlack
Remote ControlNo
 
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SONCOZ SGA1 Full Balanced Headphone Amplifier Preamplifier
Soncoz unveils with its SGA1 a fully balanced headphone amplifier and preamplifier combo that is extremely powerful and musical. Benefiting from an...

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