Glass FX Headphone Amp

The FX headphone amp adds the smooth natural sound to headphone listening.

Two 12AX7A vacuum tubes driving a pair of headphones, what could be better. Air, openness and richness even at low playing volumes. Adjustable bass and loudness switches add flexibility to the sound you want.

Try out for yourself how vacuum tubes can bring a new natural sound to your music lifestyle.

Construction Details & Features

  • Fully Integrated Vacuum Tube Headphone Amplifier: Input 450mV driving 80 mW.
  • Components: ALPS audio potentiometer, two sets gold plated RCA input jacks, and front panel minijack input.
  • Bass and Treble boost controls 
  • Compact size

Explore In-depth

Listener Notes

Coming Soon!

Advanced Engineering Notes

Coming Soon!

Upgrades Available

Coming Soon!


Coming Soon!

Awards & Reviews

Coming Soon!

Supporting Info



Rated Output Power:80 mW at a load of 32 ohms
Frequency Response:(at 1 watt into 32 ohms) 5Hz to 100KHz + 1dB
Bandwidth:20Hz to 100kHz + 1dB
Distortion THD:Less than 0.1% at 80mW output, 32 ohm load
Input Impedance:32 ohms
Input Sensitivity:450mV
Output Impedance:32 to 300 ohms
Tube Complement:2 pcs. 12AX7
Power Requirements:110V-120 VAC 60Hz or 220-240 VAC 50Hz
Dimensions:7 inches wide by 6 inches deep by 4 inches
Weight:8 pounds (3.65 Kg) net, approximately 11 pounds (5 Kg) packaged
Warranty:12 months limited parts and labor. Six months or 1000 hours whichever comes first.
Fuse:110 - 120 VAC, 1 Amp slo Blo; 200 - 240 VAC, .5 Amp slo Blo, Size 5mm X 20mm
  • FX Headphone Amplifier
  • 2 Pre-amp Tubes: 12AX7
  • Power Cord
  • Manual, Glass cleaning cloth, Warranty Info

Black Ice Audio  FX Headphone Amplifier