HeadAmp
GS-X mk2
The GS-X Mk2 is HeadAmp's flagship dual-mono, solid-state balanced headphone amplifier and preamp, built around Kevin Gilmore's discrete "Dynalo+" amplifier modules and later refined by Justin Wilson. It ships as a two-chassis design (amplifier and outboard power supply) and delivers up to 6W of pure Class-A power into balanced headphones, making it capable of driving current-hungry planar magnetic headphones while remaining quiet enough for sensitive IEMs.
MSRP
$2,995
Used market · Excellent
$2,100
MSRP to used market
From $1,700 at launch to $2,100 today.
Specifications
- THD
- 0.003% at 1kHz
- Price
- $2,995 base; optional colors +$200; historical pricing $3,199–$3,299 at some retailers
- Weight
- Amp: 5 lb; Power Supply: 7 lb
- Topology
- Dual-mono, solid-state, discrete Gilmore "Dynalo+" amplifier modules, pure Class-A
- Warranty
- 3-year, parts and labor
- Dimensions
- Amp: 14.5 x 9 x 2.5 in; Power Supply: 14.5 x 9 x 2.5 in
- Gain options
- Low, Medium, High (3-way switch); Low 0.9dB, Medium 12.5dB, High 21.2dB
- Power output
- 8W/25Ω, 6W/50Ω, 3W/100Ω
- Inputs outputs
- 1x balanced 3-pin XLR input, 2x RCA inputs; Headphone outputs: 1x 4-pin XLR (balanced), 2x 3-pin XLR combo (balanced), 1x 6.35mm single-ended; Preamp XLR/RCA outputs and loop outputs
- Output voltage
- ±20V dual mono
- Volume control
- 24-step DACT stepped attenuator (standard since 2017) or Alpha 21mm potentiometer option
- Power consumption
- 40W
- Power output balanced hp
- 8W/25Ω, 6W/50Ω, 3W/100Ω
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