EAR HP4 Headphone Amplifier 
 
Designed for the highest fidelity in headphones. Using four 6SL7 valves for the clearest of sound. Developed for studio use with the ability to drive any headphones with one watt of power utilising an enhanced triode mode circuitry.
 
• Four 6SL7 Valves 
• 4 Headphone Outputs - 2 High & 2 Low Impedance 
• One line input
• One balanced input
• One line and balanced outpout
• Chrome or Gold Knob option