Phasemation EA-220 Phono Amplifier

Elegant and strong chassis structure with a new front panel

The front panel is a new 8mm-thick slant aluminum panel that follows the elegant design of the EA-1200/EA-550. The chassis base and top cover are made of 1.6mm-thick steel plate with copper plating and also painted on top. Together with the 8mm-thick front panel, it accomplishes a strong chassis structure and reduced magnetic distortion.

The foot is equipped with a heavy metal insulator to isolate external vibrations.

Non-negative feedback amplifier circuit using all discrete components.

Many of the current vacuum tube amplifiers and semiconductor amplifiers are designed with using a negative feedback amplifier circuit that amplifies the difference (correction signal) between the input and the output stages, and this circuit can be made at low cost and yet has superior specifications. However, there is a time delay between the input and the output signals that cannot be eliminated in principle, and this causes TIM (transient intermodulation distortion), and is one of the major causes of unsatisfactory sound quality in negative feedback amplifiers. In Phasemation, all amplifiers (both semiconductors and vacuum tubes) are non-feedback amplifiers. A non-feedback amplifier does not have correction operation like a negative feedback amplifier, so constituent parts require high precision, also superior circuit design technology. As a result, it is possible to playback the sound source (record) information without losing all of it, and in terms of sound quality, it is possible to reproduce the dynamics and even subtle nuances of the music.

Dual Monaural Pattern

Builds the dual monaural layout of the same pattern of the left and right, and actualizes a uniformity of the left and right channels at a high level.