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SONCOZ SGA1 fully balanced earphone amp 600ohm Pre-amp

SONCOZ SGA1 fully balanced earphone amp 600ohm Pre-amp

Regular price £480.00 GBP
Regular price £520.00 GBP Sale price £480.00 GBP
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Brand Name: SONCOZ 
Type: Desktop Full balanced headphone amplifier


  • 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.

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.

SONCOZ SGA1 is a High-Fidelity fully balanced headphone amplifier and design for the High end series,pre-amplifier that is designed with high-quality components to ensure high-quality performance. It features a fully balanced architecture with XLR input/pre-out and 4-pin XLR+4.4mm headphone output ports. Soncoz has planned the SGA1 matching the shape, and style of their leader DAC SGD1.

Carefully Selected Operational Amplifiers:

SONCOZ has designed the SGA1 amplification circuit with carefully selected operational amplifiers(OPAMPs). It is equipped with multiple units of OPA1611, OPA1641, OPA1622 OPAMPs. Four OPA1661 units are arranged in the RCA and XLR input buffer stage, the pre-output buffer uses four OPA1611 units, Headphone Amplifier buffer uses four OPA1622 units. There are two OPA1641 in the electronic output buffer. These high-quality OPAMPs ensure you get ultra-low noise and distortion in the output.

Precise Volume & Gain Adjustment With Memory Function:

Your SONCOZ SGA1 will precisely memorize your volume and gain settings on each combination of input and output. You don't have to adjust the volume or gain level every time you switch between the output options. The SGA1 is equipped with a MUSE72320 electronic volume adjustment resistance ladder circuit that allows for precise volume and gain adjustment without introducing noise or distortion in the output.

High-Quality Power Supply For Clean Power Delivery:

SONCOZ has designed a custom toroidal transformer with multiple layers of permalloy shielding for the power supply on the SGA1. It effectively provides clean power to each and every component on the audio circuit ensuring you a high-quality performance. 

High-Quality Audio Circuitry:

SGA1 is designed with high-quality components on the audio motherboard 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.

Multi-Function Knob Button:

SONCOZ SGA1 Knob features a multi-function button that can be used to access different features on the device. 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.

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.


What's in the Box?

Q1: Are the PRE and HPA outputs at the same time?
A1: No. PRE and HPA have separate signal paths.
Q2: Are the HPA 4-Pin and 4.4mm balanced output at the same time?
A2: Yes. But they can not be used at the same time.
Q3: Does SGA1 has a memory function?
A3:Yes. The state of each input and output as well as the corresponding volume and gain values can be memorized.
Q4: How to adjust the volume quickly?
A4: When the SGA1 detection knob is turned rapidly, it will automatically enter the mode of rapid volume adjustment, and when it is detected that the knob is turned slowly, it will enter the mode of fine adjustment.
Q5: Is the gain continuously adjustable?
A5: Yes. Gain is adjusted by 0.5dB/step.

Shipping & Returns

  • Free Standard full searchable Shipping
  • DDP(Delivered Duty Paid) Services, No payment on receiption
  • Free 7-Day Return Policy!

Shipping Fees

Worldwide Free Shipping on Hificat, Please allow 1-3 business days for conduct Quality Control in order to ensure the products quality.

In the event that a shipment is refused delivery by the recipient, is undeliverable, or is returned to sender, Hificat will process a refund to the original payment method used.

If a customer would like the order reshipped, they’ll be charged a reshipment fee. Customers may also be subject to a restocking fee of up to 20 percent of the product cost.


Which Couriers To Use?

We collaborate with these courier companies:
Standard Shipping: Yanwen Express
Express Shipping(over $500 can be free): DHL Express, FedEx and SF Express

Hificat has extensive global logistics experience to ensure quality logistics services to consumers.

HiFiCat offers consumers different shipping, depending on the country, a choice of different shipping methods.


Estimated Delivery Time

1. France, Germany, UK, Italy, Spain, USA.

All taxes and duties are prepaid to the carrier by HiFiCat prior to shipping, so there are no taxes or duties to pay when you receive it. 6-10 days to arrive.

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United Kingdom:



United States:

2.EU Country:Filand, Poland, Estonia, Norway, Switzerland, Greece, Sweden, Israel, Czech Republic, Slovenia, Slovakia, Denmark, Netherlands, Latvia, Croatia, Austria, Hungary, Belgium, Bulgaria, Romania, Ireland, Malta, Iceland, Serbia and so on.

All taxes and duties are prepaid to the carrier by HiFiCat prior to shipping, so there are no taxes or duties to pay when you receive it. 10-15 days to arrive.









Czech Republic:


















Russian Federation

3.South America:Peru, Brazil, Chile



South Africa:


New Zealand:


5.Canada By Canada Post, about 2 weeks.
6. Asia:
Japan By Japan Sagawa Global Transportation. About 7 days.
Thailand By jt express. About 5-7days.
Malaysia by jtexpress.My  About 5-7days.
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