I-03 Stereo Integrated Class "D" Power Amplifier
Perceiving musical impression in its original form
Sensuous French Impressionism and spirit of German Classicism. Cool West Coast jazz and hot East Coast jazz. Dynamism of black contemporary and sophistication of Eurobeat.
The unique characteristics of sound and ﬂavor of music that were cut in the original master recordings are passed on to the listeners without any trimming of parts. Esoteric is committed to new developments in order to fully apply the Esoteric-original Master Sound Works concept to the integrated ampliﬁer.
Ingenuity that breaks from conventional concepts and use of materials without cost constraints. Esoteric has consolidated audio technologies it has fostered over years of developing separate types of ampliﬁers and has without compromise, applied them into creating an integral type ampliﬁer. The result has been the birth of Esoteric's ﬂagship integrated ampliﬁer I-03.
When you look at the simple body form that eliminates all excessive features, you can discover the passions of our engineers in their devotion to developing new high-end models and the ﬂavor of reproducing music in its original form.
Esoteric MSW* Pure Class D mono block power ampliﬁer
The power ampliﬁer is the core of our integrated ampliﬁer I-03. Esoteric has introduced know-how collected through designing professional studio-use power ampliﬁers to the power ampliﬁer sections of I-03. The power ampliﬁer of the I-03 continuously balances outstanding drive power and natural tones, and conveys the essence of a master sound recording regardless of the size and efﬁciency of speaker combinations.
Using Esoteric MSW Pure Class D power ampliﬁer with dual mono architecture
The I-03 is equipped with a MSW Pure Class D power ampliﬁer that is mounted with high-efﬁciency and uses the latest high-speed MOS-FET devices in a 3-parallel push-pull conﬁgu-ration to achieve superior speaker drive performance. This power ampliﬁer uses power ampliﬁer blocks mounted in a dual mono architecture separately for each channel to obtain a high practical-use maximum output of 320W+320W (6Ω).
Analog power circuit support for robust drive performance
A solid power supply unit makes the music pulse. The I-03 adopts powerful analog power circuits conﬁgured using large-size capacitors and high-capacity custom transformers (each transformer weighing approximately 10 kg (22 lbs.)). The MSW Pure Class D power ampliﬁer produces an optimal and distinc-tive tone that is both robust and smooth.
Bi-ampliﬁer and multi-ampliﬁer drive support
The I-03 responds ﬂexibly to system upgrades of the future. The I-03 is equipped with a RCA output terminal that can be switched between PRE OUT and REC OUT. Any level offset can be set for signals sent to the power ampliﬁer during the PRE-OUT output stage. The I-03 also offers a bi-ampliﬁer architecture that allows connecting various types of external power ampliﬁers with different input gains.
High-grade dual mono preampliﬁer with C-03 technologies.
The I-03 preampliﬁer inherits stereo preampliﬁer C-03 technolo-gies that are highly reputed worldwide and have received a number of awards. This type of preampliﬁer uses a dual mono architecture with a completely independent board for each channel. The chassis compartment dedicated for the preampli-ﬁer is partitioned using a 2mm thick steel plate to install two preampliﬁer boards for the left and right channels.
Volume controls based on dual-mono concept Esoteric DVC System*
Esoteric's DVC System uses a rotating control to transmit signals to two preampliﬁers located on both sides of the I-03 and simultaneously drives both volume control ampliﬁers, (which are installed separately on left and right preampliﬁer boards). Volume controls are provided independently for left and right channels to maintain the left and right audio signals separately, and to achieve a clear sound quality with exceptional channel separation. Furthermore, there is no audio signal wiring from the audio board to the volume control, which signiﬁcantly reduces the signal path to prevent deterioration of sound quality.*DVC=Dual-mono Volume Control
Delicate and dynamic sound with low-noise operation
The Esoteric DVC System control board, used for central control of the left and right channels, is installed in a compartment separate from preampliﬁer boards and has a separate power supply. This design assures low noise operation with a complete shutdown of the control microcomputer except at the time of receiving an operation request.