SONCOZ SGA1: Meet The All-New Fully Balanced Headphone Amp & Preamp

Posted in Jul 21, 2021 in News, no comment

Soncoz is a HiFi desktop audio equipment manufacturing brand based in China. Last year they released two balanced Desktop DACs, SGD1, and LA-QXD1. Both of these DAC’s made a great name in the industry with their sturdy build and high-quality performance. LA-QXD1 became the first fully balanced DAC around the 200$ price range. Today, Soncoz has launched its latest product, a new fully balanced headphone amplifier, and pre-amplifier, the all-new Soncoz SGA1.

SONCOZ SGA1

It is designed to match the design and aesthetics of the flagship SGD1 DAC. SGA1 features a fully balanced architecture with XLR for signal input and pre-amp-out, with 4-pin XLR and 4.4mm balanced headphone output. It also has RCA for single-ended input and pre-amp output and a 6.35mm single-ended headphone output. Soncoz SGA1 balanced HPA and Pre-AMP is available to order with us for 649.99$.

Features
– Ultra-Low Noise OP-AMPs.
– High-quality components such as Large Capacity Capacitors, Signal Coupling Capacitors, and more.
– Customised Toroidal Transformer.
– MUSES 72320 Electronic Volume Chip.
– Volume & Gain Adjustment.
– Memory Function that memories the volume and gain value of each combination of input and output.
– Multi-Function Knob-Button.
– Shielding Baffle And Shield to separate the high-voltage and low-voltage circuits.
– Excellent PCB Design.
– OLED Display.

Technical Specifications

Headphone Amplifier Parameters (SE)
– THD+N: <117dB.
– Frequency Response Range: 20Hz-20kHz.
– Dynamic Range: <124dB.
– Signal To Noise Ratio: <92dB.
– Crosstalk: <118dB.
– Output Voltage: 4.0Vrms.
– Output Impedance: 0.1 ohm.
– Noise: 1.8uVrms.
– Output Power: Up to 420mW @33 ohm, up to 210mW @300 ohm, up to 105mW @600ohm.

Headphone Amplifier Parameters (Balanced)
– THD+N: <118dB.
– Frequency: 20Hz-20kHz.
– Dynamic Range: <126dB.
– Signal To Noise Ratio: <91dB.
– Crosstalk: <120dB.
– Output Voltage: 7.8Vrms.
– Output Impedance: 0.05 ohm.
– Noise: 3.6uVrms.
– Output Power: Up to 420mW @33 ohm, up to 840mW @300ohm, up to 420mW @600ohm.

Pre-Output Parameters (RCA)
– THD+N: <117dB.
– Frequency Response Range: 20Hz-20kHz.
– Dynamic Range: <126dB.
– Signal To Noise Ratio: <95dB.
– Crosstalk: <132dB.
– Output Voltage: 2.0Vrms.
– Output Impedance: 100ohm.
– Noise: 1.5uVrms.

Pre-Output Parameters (XLR)
– THD+N: <118dB.
– Frequency Response Range: 20Hz-20kHz.
– Dynamic Range: <126dB.
– Signal To Noise Ratio: <94dB.
– Crosstalk: <136dB.
– Output Voltage: 4.0Vrms.
– Output Impedance: 200ohm.
– Noise: 3.0uVrms.

Experience Quality Performance With Ultra-Low-Noise OP-AMP Architecture
Soncoz has equipped the SGA1 with carefully selected high-performance OP-AMPs. The player features multiple units of OPA1611, OPA1641, OPA1622, and more to ensure the basic performance of SGA1. Among these, RCA and XLR analog input buffers use 4 OPA1661s, electronic output butter uses 2 OPA1641s, Pre-output buffer uses 4 OPA1611s, and HPA output buffer uses 4 OPA1622s. You are provided with nothing else but high-quality sound output for your High-Resolution headphones.

Precise Volume / Gain Adjustment
Soncoz SGA1 integrates MUSES72320 electronic volume adjustment resistance ladder circuit that allows for precise volume and gain adjustment with low noise and low distortion in the output. It has 0.25dB/step volume increase when gain=0, and 0.5/dB when gain is not 0. Adjustment range of Volume is -110.75dB~0dB. Gain adjustment is 0.5dB/step with an adjustment range of -6dB~0dB for HPA and -7dB~0dB for Pre-AMP.

Memorize Volume / Gain Combination
Soncoz SGA1 features a memory function that memorizes the volume and gain value of each combination of input and output independently. You won’t have to adjust the volume and gain settings every time you switch between HPA or PRE mode. These settings won’t be lost even when the device is powered off.

Mute Output & Standby Function
If you want to mute the output and put the SGA1 into standby mode, simply press the knob button once. It will mute the SGA1 and the “V” or “G” will flash on the screen. After about 40 seconds the screen will gradually dim until it goes out and the device falls into standby mode.

Audiophile-Grade Performance With High-Quality Components
Soncoz has designed SGA1 with high-quality components to ensure high-quality performance. The rectifier circuits of SGA1 use two large capacity(8200uF*2) ELNA audio capacitors to ensure the ultra-low ripple voltage of the main power supply. In the key audio signal path, SGA1 uses WIMA MKS2 series non-polar film coupling capacitors that greatly improve the quality of the audio signal.

Clean Power With Toroidal Transformer
Soncoz SGA1 is powered by a custom toroidal transformer containing multiple layers of permalloy shielding. The 50/60Hz power frequency noise and its harmonics are significantly reduced providing clean, distortion-free power to the different components on the circuit.

Available in Two Different Color Options
Soncoz SGA1 is released in two different color options, Deep Black and Deep Silver. The Deep Silver matches the design and aesthetics of the flagship SGD1 Balanced DAC by Soncoz. The SGA1 is designed to be a companion to the SGD1, completing a fully balanced headphone and pre-amp stack.

Price & Availability
Soncoz SGA1 is available with HiFiGo Store in both color options. It is priced at 649.99$.

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