GS-X mk2 Balanced Headphone Amplifier / Pre-Amplifier

In Stock

The GS-X Mk2 is HeadAmp's flagship amplifier for dynamic and planar magnetic headphones. More details

  • Questions?Questions?
  • Authorized Dealer - Trusted Since 2003Authorized Dealer
  • Roon Tested30 Day Returns
  • Free 2-Day Shipping on US OrdersFree 2 Day Shipping
  • Ships to North AmericaShips to North America

Get Dynamic, Transparent Sound With the GS-X mk2

The GS-X Mk2 is HeadAmp's flagship amplifier for dynamic and planar magnetic headphones. With a circuit that has evolved and matured over a 15-year period, the GS-X Mk2 is the most powerful, linear, and transparent amplifier that we have ever produced. Pushing up to 6W of class-A power into balanced headphones, the GS-X Mk2 can tame the toughest headphone loads on the market, while its' low-noise circuitry delivers an equally brilliant performance with sensitive in-ear monitors.

In addition, the GS-X Mk2 makes a fine preamp for your stereo speaker system. With its' high input impedance, low output impedance, multiple I/O options, 3-way gain control, and precise volume control, the GS-X Mk2 can fit into almost any stereo rig, and provide the same wonderfully transparent sound output that it does with headphones.

HeadAmp GS-X mk2 Amp sitting on table next to headphones hanging from a stand in front of a green wall.

Carefully Handcrafted

The GS-X Mk2 is a carefully handcrafted piece of audio equipment, with painstakingly matched components, and the highest standards for build quality in the business. Every GS-X Mk2 is tested extensively throughout the build process, as well as before, and after an extensive burn-in process to ensure the best possible performance.

As of January, 2017, all GS-X Mk2 ship with the DACT 24-step attenuator volume control.

Build quality, and fit and finish may rarely be equaled, but I doubt ever surpassed...The price/performance ratio is outstanding... this is an end-game amp for audiophiles looking for a transparent window through which to enjoy your music.

HeadAmp's Take

The GS-X Mk2 delivers the quickest, cleanest, most transparent sound you will find in a headphone amplifier, and does so regardless of the headphones you pair with it. You'll simply hear the character of the headphones themselves, and the connected source, as the GS-X does its' part to supply all the power your headphones need, without coloring the sound. The GS-X is carefully designed to provide the same level of experience whether listening with high sensitivity, multi-driver in-ear monitors, low-impedance current-hungry planar magnetic headphones, or low-efficiency, high-impedance headphones. The combination of extra low-noise transistors, careful part matching, and an adaptable gain setting work together to give your entire collection of headphones just what they demand. Join the numerous headphone manufacturers who use this amp in their development labs, and get the clearest sound possible from your cans.

HeadAmp's GS-X Mk2 Amplifier sitting on a table next to headphones hanging from a stand.
Hands holding an open console showing circuit boards for the HeadAmp GS-X mk2 amplifier.

About HeadAmp

HeadAmp builds some of the world's best headphone amplifiers like our famous Blue Hawaii SE or our new compact GS-X mini. All of our solid state amps start with new-old-stock Japanese sand which are irreplaceable for discrete solid state designs.

Since HeadAmp Audio Electronics founding in 2002, the company has designed and built award-winning headphone amplifiers and pre-amplifiers with a steadfast commitment to quality and precision. That laser focus has earned HeadAmp a worldwide reputation for making the finest headphone electronics on the market.

Our design philosophy is engineering-forward, aiming to produce amplifiers as true to the source as possible, for the utmost listening experiences. Our amplifiers aim to drive your headphones to their fullest potential, regardless of driver type, efficiency. or impedance. Ranging from the diminutive Pico Slim for in-ear monitors, to the legendary Blue Hawaii SE for electrostatic headphones, there’s a model in our lineup to make any headphone shine.

All HeadAmp products are designed, assembled, and serviced at our shop in Charlottesville, VA USA.


  • Amp: 14.5x9x2.5”, 5lb
  • PSU: 14.5x9x2.5”, 8lb
  • Shipping Box: 18x12x10”, 15lb
1 XLR, 1 RCA
  • Loop Output: 1 XLR, 1 RCA
  • Active Pre-Amp: 1 XLR, 1 RCA
  • Headphones: 1 4-pin XLR balanced, [left/right 3-pin XLR balanced, 2x 1/4” stereo]
  • [ ] - Neutrik XLR+1/4” Combo Jacks
Amp Specs
  • Topology: Solid State JFET Input, BJT Output, Dual Mono
  • Gain: 3x Adjustable
  • Power Output (HP/Balanced): 8W/25-ohm, 6W/50-ohm, 3W/100-ohm
  • THD: 0.003% / 1KHz
  • Headphone Output Impedance: less than 1 ohm
  • Preamp output impedance: 100 ohm
  • Input impedances: 10K-ohm
External Power Supply:
  • Type: Linear Regulated
  • Input: 115/120VAC
  • Output: +/-20V Dual Mono
  • Power Consumption: 40W



Customers Also Viewed