Vibration free, co-vibration free and interference free structure

Construction
The first input stage, MC stepup transformer, is independent electrically and mechanically, due to avoid any electric affection and unwanted vibraion from the amplifier section.

Dual mono amplifier structure with independent seven(7) blocks of right and left side
The amplifier minimizes mutual interferences by deviding blocks in seven(7) depending on each function. By perfect symmetry, the separation between channels sets 100dB or more through each audio bandwidth.
      

Mechanical earth
Independent right and left power transformers keep out a chassis from annoying vibration, respectively supported by high-carbon cast-iron feet, which have great damping ability.

Vibration free, co-vibration free chassis
Made up with 12mm (about 0.5") thick grinded aluminium front panel, 5mm (about 0.2") thick base, and top plate, the robust chassis with the natural oak side panels damps co-vibration effectively.
      

Low noise design
Luxurious rectifying circuit with rectifying tubes which in principle do not generate switching noise and choke transformer.


Simple signal transfer

The amplfier minimizes the functions only needed for the phono amplifier, and it keeps the pureness of signals by not passing through any unnessessary points. The signal route has wired in hand completely, not in print. This is a time-consuming process but very effective to achieve the ideal 3D component layout.
      

To secure against a faulty use, MM and MC is switchable only by replacing input/output wiring of the transformer embeded. This unique structure makes both the MC stepup transformer inside and the phono amplifier possible for independent use.

CR Equalizer with vacuum tube unit amplifier

The non-feedback SRPP amplification circuitis is used inside for the unit amplifier as it has better performance in transition characteristics and in sound quality. You will enjoy its glamorous energetic sound in wide-dynamic-range as the characteristics of vacuum tube amplifier.
      

CR type equalizer IC is used.
The equalizer unit making up with the minimum damping time constant ICs obtains straight reaction without any RIAA deviation in principle through wide bandwidth.

T-1, high-performance stepup transformer of in-house development and in-house production, is embedded( Not included in the EA-1�Us)

The transformer embeded is T-1 equivalent, which has the lowest range linearity and the highest efficiency stepup with low in loss in the industry. Uniquely devided layer coil structure makes it realize wide bandwidth characteristics, so the transformer is highly evaluated by many audio magazines. It carries energetic sound throughout all ranges.

Secured texture

For the best texture, input/output terminals are of WBT's, known as high quality and high sound performance products; the front panel is 12mm-thick grinded aluminium; the structural components are 5 mm thick materials; and the side panels are 15mm thick natural oak. The combination of all of the eternially sophisticated finish provides you a hapiness of possessing EA-1�U.