Singxer SA-1 Balanced Headphone Amplifier

Singxer SA-1 Balanced Headphone Amplifier

Complete Setup:
Massdrop x Sennheiser HD 58X Jubilee Headphones
Massdrop x Sennheiser HD 6XX Headphones
ADV. Headphone Hanger
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All Analog, No Distortion

For headphones in need of classic analog amplification with modern performance, the SA-1 balanced headphone amp from Singxer is a class-leading fit. Equipped with Singxer’s own custom, four-way fully discrete Class A amplifier circuit, the SA-1 is all analog—from the internals all the way to the controls. This pure analog design delivers warm and expressive amplification devoid of any EMI interference caused by digital components, making the SA-1 loud, and quiet, in all the right ways. With an impressive signal-to-noise ratio of 126 decibels, it won’t be sending your ears anything but pure signal. And with XLR and RCA inputs alongside a wide range of outputs—including 4-pin XLR, 4.4-millimeter balanced, and 6.35-millimeter single-ended options—it’s capable of handling preamp or headphone amp duties in virtually any setup. 

Singxer SA-1 Balanced Headphone Amplifier
Singxer SA-1 Balanced Headphone Amplifier
Singxer SA-1 Balanced Headphone Amplifier


  •  Singxer
  • Headphone amplifier and preamplifier
  • Amplification type: Class A
  • Housing material: Aluminum
  • Inputs: (1) balanced XLR, (1) single-ended RCA
  • Outputs: (1) Balanced XLR, (1) single-ended RCA, (1) balanced 4.4 mm headphone out, (1) balanced XLR 4-pole headphone output, (1) single-ended 6.35 mm headphone output
  • THD+N: 0.000078% (balanced input, no load); 0.000128% (balanced input, 33 ohms)
  • Noise level: 0.66µV (maximum output, SNR / DNR 147 dB), 300nV RMS (low gain, A-Weighting, 20Hz – 22kHz)
  • Output power: 6480 mW at 32 ohms, 2000 mW at 120 ohms, 380 mW at 600 ohms
  • Power supply: 100 – 240V AC, 50 / 60 Hz
  • Dimensions: 9.2 x 6.7 x 1.8 in (23.4 x 17 x 4.6 cm)
  • Weight: 4 lbs (1.8 kg)


  • US power plug


Estimated ship date is May 25, 2022 PT.

Payment will be collected at checkout. Cancellations are accepted up to 2 hours after checkout, after which all sales final.

Top Customer Questions6
Is there any pop sound when switching from OFF to PRE or PRE to HPA on the switch?
Oct 3, 2021
Top Answer
Yes. You will hear a noticeable mechanical noise when switching. It's quite louder than THX 789's knob turn (near silent though). I don't change the settings so it doesn't bother me (headphone...Read More
Oct 13, 2021
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Can I connect my regular Yamaha CD player ( CD-S300 ), non DAC to this unit or does it run on DAC only ? I listen to my CD collection and do not has a DAC or plan to purchase one. Thanks for your answers.
May 17, 2021
Top Answer
According to the picture I found that cd player has RCA out so yes it'll workRead More
May 23, 2021
Being so called a class A amp, this should be left on all the time?
Mar 2, 2022
Top Answer
Mar 6, 2022
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User Photos13
Singxer SA-1 amp, Chord Qutest DAC, Meze Empyrean
SA-1, SDA-6, T1.3
Singxer SA-1
Singxer SA-1 powering a ZMF Aeolus
Bought DAC and amplifier from Drop
Headphone stack with the Singxer SA-1
singXerin in the new gear!
For the heavy metal mania.
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