Products

High Quality Headphone Amplifier Expressing Freshness of Music

Recieved Prizes

  • Seibundo-shinkosha2012 MJ Technology of the Year Peripheral equipment Award

We, PhaseTech, release Pure Audio Grade Headphone Amplifier, EPA-007. PhaseTech has been releasing the audio equipment for reproducing live music consistently. Also for EPA-007, we aspire to the pure audio grade sound quality by adopting the high-quality sound technology specialized to music playback utilized to other PhaseTech products.

This amplifier is compatible to balanced headphones due to the dual monaural construction. Unprecedented natural lateralization is provided by the recently-developed dump controller.

Product Concept

Music outputted from the grade of high-end speakers should be also outputted from headphones; so, we designed EPA-007. Because headphones are overwhelmingly more sensitive than loud speakers (1000 times in power ratio), sufficient sound volume can be outputted with approximately 1mW.
Because the headphones are sensitive, the quality of device is sensitively reflected in the sound. Also for EPA-007, freshness of music is ensured due to discrete circuit construction and minimum device construction to be utilized to other PhaseTech products. The range of headphone impedances is width of different order of magnitude, so it is hard to gain a damping force matching to every headphone.
The damp controller adopted in this unit can vary the damping force of headphones; therefore, soft soundand more natural lateralization suiting your taste can be gained.

Main featur

1. Dual Monaural Amplifiers consisting of Discrete Components in All Stages

High-sensitive headphones reflect sensitively in the freshness reduced by passing through devices. In EPA-007, an operating amplifier is not used in order to prevent reducing freshness; so, carefully-screened devices are adopted in the all stages. The dual amplifiers have independent power supplies; therefore, balanced cable type headphones completely separating L and R lines can be driven.

2. Adopting Damp Controller for Providing the Damping Force to Headphones

The damping force matching to the headphones having impedance variation of 16 to 500 ohm can be set by the damp controller adopted to EPA007. In addition to contact degree of head pad, by driving the headphones with appropriate damping force, a pesante bass tone can be created; and the audio image existing at the point in head is moderately alleviated; therefore, your stress can be alleviated when listening for a long time.

3. Adopting the Protection circuit for Protecting Headphones

The cut-off protector, which prevents propagating a pop noise generated at ON/OFF power switch
and protects the headphones in an abnormal action, is adopted.

4. Resonance-free, vibration-free and interference-free chassis to be made of aluminum in all

The unit consists of the front panel made shaving aluminum steel to be nonmagnetic material, the 2mm thick chassis and top cover. By exhausting heat from the chassis faces, the enclosed structure without slits is achieved.

Product Specification

Product type Dual Monaural Headphone Amplifier
Input Analog 1 system (RCA/XLR)
Output 6.3mm Standard stereo jack (x2)
Input impedance 10 k-ohm
Frequency characteristics 20 Hz to 100 kHz -0.5 dB
Compatible headphone impedance 16 to 600 ohm
Residual noise 50FV or less
Crosstalk 90dB or more
Power consumption 1.5W (100VAC, 50 to 60 Hz)
Dimensions (mm) 220(width) x 57(height) x 234 (depth)
Mass 2.0 kg