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Singxer SA-1 Headphone Amplifier Fully Balanced Discrete Class A Amp/Preamp SA1 Support XLR/6.35mm/4.4mm Multi Interface

Singxer SA-1 Headphone Amplifier Fully Balanced Discrete Class A Amp/Preamp SA1 Support XLR/6.35mm/4.4mm Multi Interface

Regular price £479.00 GBP
Regular price £479.00 GBP Sale price £479.00 GBP
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Brand Name: Singxer
Built-in Battery: No
Certification: NONE
Recommended Headphone Maximum Impedance: 501-600 Ohm
Output Type: Balanced Out
Origin: CN(Origin)
Input Type: RCA
Input Type: XLR
DSD (Direct Stream Digital): No
Body Material: Metal
Dimensions (WxHxD): 234MM*170MM*46MM
Model Number: SA-1
Bluetooth: No
Type: Professional Amplifier


SA-1 is a high-performance fully balanced, fully discrete Class A amp/preamp.
Support global voltage AC100V-240V, no need to switch.

Ultra-low distortion:
THD+N -120db @1khz A weighting 20-22khz
When outputting 50mv at low gain, THD+N still has -96db @1khz A weighting 20-22khz

Ultra-low noise:
At low gain, the bottom noise is 300nv RMS A weighted 20-22khz (tested after amplification by LNA), the direct test value of AP2522 is 0.66uv
At maximum output, SNR and DNR are 147db.

SA-1 adopts a true four-way fully independent fully discrete Class A amplifier circuit design, pure analog amplifier circuit and pure analog control, without EMI interference caused by digital control, in order to faithfully restore the analog flavor of music.

The amplifier circuit adopts the class AB architecture developed by ourselves. The differential input tube adopts ROHM's ultra-low noise audio dedicated tube. The tubes are purchased in large quantities and then selected by manual precision matching to ensure the consistency of the differential tube. For other tubes, we use SMD twin tubes with excellent consistency to ensure better performance.
The final output circuit uses multi-stage current amplification, similar to the architecture of a high-power amplifier. Each channel uses 2 pairs of ON Semiconductor's 4A mid-power tube to output in parallel to ensure low enough internal resistance and strong driving force; it can be done calmly even in large dynamics.

Perfect protection functions: overcurrent, overload, overheating, short circuit, DC protection, start-up delay, and the output relay can be cut off immediately when shutting down.

Multi-function and multiple play methods:
1. Support single-ended balanced input, free switching;
2. Support multi-output interface, XLR 4-pin true balanced, 6.35 single-ended, 4.4 balanced interface; also supports single-ended and balanced output as a pre-mode;
3. Support high and low gain design, when the gain is low, you can easily connect various earplugs, ultra-high sensitive earplugs, etc. (still can maintain inaudible bottom noise);
When the gain is high, you can push a variety of big food headphones, including a variety of high resistance coils, low resistance flat panels, and even ultra-low sensitivity headphones such as KK.
4. Support high and low impedance output, suitable for high-impedance headphones when high-impedance, low-impedance headphones that require high current can be pushed; freely switch, you can enjoy powerful driving and control sound, you can also try to relax and calmly The analog flavor.

Large balanced output power:
32Ω 6480mW
120Ω 2000mW
600Ω 380mW

Ultra-low distortion, the following figure shows the performance of APX555 test prototype:

Size and packaging:
The length, width and height of the case: 234MM*170MM*46MM, excluding the height of the machine feet and the protruding part of the connector behind the case.
The length, width and height of the carton packaging: 350MM*230MM*110MM.
The weight of a single machine is about 1.8KG.
Shipping package weight: 2.3KG

Standard accessories: a power cord

What's in the Box?

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.

Tracking Example



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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