This is one set USED Esoteric I-05B Integrated amplifier. MADE IN JAPAN in 230V, actually this is brand new amplifier but due to age, some cosmetic of the black color change.
Esoteric MSW* Pure Class D Mono Block
Power Amplifier
*MSW= Master Sound Works
• Introducing the design know-how of
professional studio-use power amplifiers
The power amplifier is at the core of our integrated amplifier, the
I-05.Esoteric has introduced techniques collected through the
trials of designing professional studio-use power amplifiers into
the power amplifier sections of I-05. The power amplifier of the
I-05 continuously balances outstanding drive power along with
natural tones and conveys the essence of a master sound
recording regardless of the size and efficiency of the speaker
combinations being used.
• Esoteric's MSW Pure Class D power
amplifier with dual mono architecture
The I-05 is equipped with a
MSW Pure Class D power
amplifier that uses the latest
high-speed MOS-FET devices
in a 2-parallel configuration to
achieve superior speaker drive
performance. This circuit uses
separate power amplifier blocks
mounted in a dual mono
architecture. This allows each
channel to obtain a high
practical-use maximum output of 190W+190W (6Ω).
• Linear (analog) power circuit supplying strong driving
performance
The power circuit is equipped
with a high capacity custom
EI core transformer that
generates tenacious yet silky
sound quality. The smoothing
condenser achieves a great
balance between high capacity
and low impedance by
means of a parallel connection
of four circuits to each channel.
Also, strategic placement of the power amplifier on the board
shortens the signal path, which means a faster power supply.
Furthermore, the high speed Schottky barrier diode is used for its low
noise when rectifying. The linear power source, which boasts low
noise and abundant power, contributes greatly to the unit's excellent
sound quality.
* The power source of the amplifier is the heart that determines the performance and
tonal quality of the amplifier. The I-05 satisfies both pure and warm tones along with
strong driving performance by combining the traditional linear (analog) power
source and the latest amplifier stage which easily drives even low-efficient
speakers. This might even give the listener a feeling that there are no speakers at all.
Full-balance Designed Dual-mono Preamplifier
• Full-balance preamplifier circuit thoroughly suppressing noise
The preamplifier is carefully designed
carrying over the award-winning
technologies introduced into the
C-03. The application of a fullybalanced
configuration reduces
noise to the limit. The mounting
point is located at the rearmost
area of the chassis, which is
closest to the input terminal.
• Esoteric-QVCS (QVCS = Quad Volume Control System)
By turning the volume knob, the variable volume gain of all four
circuits – right and left channels, positive and negative powers – are
activated by control signals that are transmitted to the preamplifier. In
this way, the system keeps left and right audio signals independent
from each other and from positive to negative. The benefit being that
sounds are heard clearly with good channel separation and accurate
phase characteristics. Furthermore, the deletion of a cable from the
audio board to the volume device radically shortens the audio signal
path and thus stops sound deterioration. The volume device uses
the New JRC “MUSES,” tried-and-trusted for its sound quality
• Low noise operation capable of reproducing minute dynamics
The control board for the entire Esoteric-QVCS is physically
separated from the preamplifier board. A measure is being taken
here also for downright low noise operation, which is to completely
stop the control microcomputer, unless the operation launch is
accepted.