The HP-7 is a top quality headphone amplifier and preamplifier featuring a high end audio active volume control design. The double mono active volume control is made with 200 step 0.5dB top class 1% single resistors per channel for high end audio performance.

The innovative design developed for the HP-7 allows matching wide impedance headphones from 20 to 1000Ohm with no need of any manual adjusting.

The compact size helps the HP-7 being easily installed for building a complete Micro Line system with high class convenient products.