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Singxer SA-1 Fully Balanced Discrete Class A Headphone Amplifier & Pre-Amplifier

Singxer SA-1 Fully Balanced Discrete Class A Headphone Amplifier & Pre-Amplifier

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Singxer SA-1 Fully Balanced Fully Discrete Class A  Headphone Amplifier

Audiophile Store, Australia Stock, Authorised Reseller, Local Warranty, Full Support


1.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.

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

3.SA-1 adopts a true four-way fully independent fully discrete Class A amplifier circuit design, pure analogue amplifier circuit as well as control interface eliminating EMI interference caused in a digital or switching domain, in order to faithfully restore the analogue flavour of music.

4.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.

5.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.
6.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 front-end mode.

3. Support high and low gain design, you can easily connect all kinds of earplugs, super sensitive earplugs, etc.

4.When the gain is high, you can push a variety of big headphones, including a variety of high-resistance moving coils, low-resistance flat panels, and even ultra-low sensitivity headphones such as KK Earphone.

5.Support high and low impedance output, suitable for high-impedance headphones when high-impedance, and low-impedance headphones that require high current.

6.Large balanced output power:
32Ω: 6480mW
120: 2000mW
Volume: 234MM*170MM*46MM
weight :1.8KG

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Customer Reviews

Based on 6 reviews
Michal Buszynski

Very professional advise. Quick response, for any questions. Listening for my needs and finding solutions accurately. Definitely will go back for more.

Michael Goulding

Great sounding headphone amp but the switches on the front face feel a bit flimsy, have to push the switch down hard to turn it off properly. There is also a warranty sticker to get into the unit and I'm never a fan of that.

Alvin DUTT

Well bought Singxer SA-1 after reading some reviews and recommendation from Adam. Once received I was bit skeptical looking at the size thinking can this thing really drive high impedance headphones but boy I was so wrong. I'm guessing this AMP requires some hours on it before any critical listening can be done but initial impressions have been very positive. Vocals are clear with slight tilt towards warmth, huge soundstage and bass is tight and well controlled. Couldn't ask for anything more at this price. Also if you can get an aftermarket power cable to go with this unit. Highly recommended amp.

Nick Ryan

Hi, The Singxer has exceeded all my expectations and requirements, i have a fair selection of headphones of varying impedance and it handles them all with ease. The sound is fantastic, well balanced and spacious, good bass as well. I am very pleased with my purchase.