Esoteric A-02 Bruksanvisning

Esoteric mottagare A-02

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Stereo Power Am plif ier A - 0 2

Abundant use of high-grade components

pursued for both their properties and audibility

Securing signal clarity and minimizing transmission loss

maximizes pure ampliﬁer performance. Rigorously selected

components are used to satisfy to the greatest extent possible

such requirements for power ampliﬁers. Highly reliable XLR input

terminals that boast contact performance and Esoteric’s original

RCA input terminals are just some of those implementations.

WBT nextgen WBT-0710Cu speaker terminals are also

employed. These conductor cores utilize pure copper with gold

plating to achieve high conductivity and low resistance.

Moreover, the A-02 employs high-grade components such as

electrolytic capacitors and transistors with excellent high

frequency characteristics achieved through property examina-

tion and repeated trial listening.

Ingenious chassis structure

that intricately fuses precision and

vibration suppression

Internal circuit components are separated into dedicated inner

compartments for each circuit, partitioned by 2 mm steel walls.

The bottom chassis utilizes 5 mm thick steel for additional

isolation that prevents interference between circuits and

minimizes the adverse effects of resonance caused by internal

and external vibration. The extremely robust inner chassis is

composed of a 20 mm thick aluminum front panel and 5 mm

thick top. It is also supported at four points on Esoteric-original

pinpoint feet. These and other measures help to keep the

housing highly rigid and resonance-free. What’s more, an

approx. 41.5 kg weight (91.5 lbs.) speaks volumes for the rigidity

of the A-02.

Tranquil yet strong expression in a design

that evokes rich musical qualities

A design idea that shows off high-end aspirations through and

through comes into being in a simple body form. That form

incorporates structural beauty, featuring bold design with

delicate shadowing as well as black alumite-processed large

heat sinks symmetrically located on the left and right sides of the

housing. A sense of unity with Esoteric’s high-end lineup is also

projected, bringing about unrivaled presence when putting

together an audio system.



Speciﬁcations

Speaker Outputs

Rated output power STEREO 200 W + 200 W (1 kHz, 8 Ω)

400 W + 400 W (1 kHz, 4 Ω)

BTL 800 W (1 kHz, 8 Ω)

Maximum output power STEREO 250 W + 250 W (1 kHz, 8 Ω) (JEITA)

500 W + 500 W (1 kHz, 4 Ω) (JEITA)

BTL 1,000 W (1 kHz, 8 Ω) (JEITA)

Frequency response 5 Hz - 100 kHz (1 W, 8 Ω, ±1 dB)

Signal-to-noise ratio (S/N) 117 dB or more (JEITA)

Total harmonic distortion 0.009 % (1 kHz, 8 Ω, Rated output power)

Minimum required impedance STEREO 4 Ω / BTL 4 Ω

Gain 28 dB

Analog audio inputs

Jacks RCA jacks 1 stereo / XLR jacks 1 stereo

Input impedance RCA 150 kΩ / XLR 320 kΩ

General

Power supply AC 230V 50Hz / AC 120V 60Hz / AC 220V 60Hz

Power consumption 550 W

External dimensions (W x H x D)

445 x 220 x 430 mm (17 1/2” x 8 5/8” x 16 15/16” ) (including protrusions)

Weight 41.2 kg (91.5 lb)

- This product is available in three different power supply variations shown in the chart above.

Make sure that the voltage shown on the rear panel matches the AC line voltage in your area.

- The shape of the AC inlet and plug of the supplied power cord depends on the voltage rating

and destination country.

ESOTERIC COMPANY

1-47 Ochiai, Tama-shi, Tokyo 206-8530, Japan

Fax: (042)356-9240

www.esoteric.jp

www.esoteric.teac.com/

Please note that Esoteric products are available at limited distributors in respective countries．

" ESOTERIC " is a trademark of TEAC Corporation．All other brand or product names are trademarks or registered trademarks of their respective holders

property rights of TEAC Corporation．These materials shall not directly or indirectly be published, reproduced, modified or distributed in any medium．

Design and specifications are subject to change without notice．

PRINTED IN JAPAN 0511O00•TECD-0132 English version

Stand-out drivability

for clearly reproducing even the most subtle

nuances of music

A power ampliﬁer that emits high-quality output is the

source for reproducing a musical experience featuring

beautiful resonance swelling within the reverberation of

crashing waves and vitality. Esoteric’s A-02 stereo

power ampliﬁer continuously balances maximum drive

power and natural timbre regardless of the size and

efﬁciency of loudspeaker selection. This way, the A-02

can portray in full the dynamism and delicacy inscribed

in the original master recordings.

Esoteric MSW* Class AB power ampliﬁer and

blocks with dual mono architecture

The MSW class AB power ampliﬁer blocks are the

culmination of Esoteric ampliﬁer design technology

that pursues master recording sound playback. The

A-02 employs such blocks in a dual mono architec-

ture where they are mounted independently by

channel. Sound quality approaching that of monau-

ral power ampliﬁers is thus achieved in a stereo

ampliﬁer size.

* MSW=Master Sound Works

Five bipolar devices in parallel

push-pull conﬁguration to attain

200W+200W (8Ω) rated output

Carefully selected bipolar transistor devices boasting a

withstanding voltage of up to 230V are employed, with each

device able to supply 17 amps for continuous operation and 34

amps for instantaneous operation. LAPT* devices featuring

excellent high-frequency characteristics and that create power-

ful yet ﬁne timbre are mounted in a 5-parallel push-pull conﬁgu-

ration for each channel to support rated output of 200

Ｗ+200W

at 8Ω or 400W+400W at 4Ω in class AB operation. These

devices help to achieve both high power to drive all kinds of

speakers to their fullest with excellent power linearity.

* LAPT=Linear Ampliﬁed Power Transistor

Simple two-stage ampliﬁcation drive stage

for dynamic natural sound quality

The drive stage of the A-02 is a simple two-stage ampliﬁcation

drive. By keeping the signal path as short as possible, stability is

increased for natural and highly dynamic sound quality with

miniscule amount of any negative feedback.

High-capacity toroidal transformers

for robust music playback

supported by powerful power supplies

Broad dynamic range and playback with an overwhelming feel

of power spice up separate ampliﬁers. The A-02 has highly

efﬁcient high-capacity toroidal transformers for excellent sound

quality mounted on power supplies that make up the core of a

power ampliﬁer. Through this design, the ampliﬁer can power-

fully evoke music in its entirety.

Independent power source voltage ampliﬁcation stage

that dramatically improves sound resolution

Power from the drive stage supplies to speakers often

ﬂuctuates sharply. To prevent that from adversely affecting

operation, a voltage ampliﬁcation stage receiving weak signals

from the preampliﬁer (stage before drive stage), is mounted with

special toroidal power source transformers and power circuits

independent from the drive stage. With this implementation, a

very stable power supply to the previous stage is secured,

increasing the ﬁne expressive power and resolution of each

instrument even in the climax of a full orchestral performance.

Low frequency range playback with feel of

power and speed: another area

where pro studio know-how is exhibited

A powerful damping factor of 1,000 is achieved with miniscule

negative feedback by combining high-performance bipolar

transistors with a short signal path two-stage ampliﬁcation

design. Precise and powerful driving force in the drive stage

gives easy damping even with large diameter woofers to

provide low frequency playback with excellent transient proper-

ties and an abundant feel of speed. The beautifully taut low

frequency range makes music even more open and dynamic.

Ability to use as a colossal 800W

monaural power ampliﬁer with BLT connections

Output of 800W can be gained with an 8Ω load if using the A-02

as a monaural power ampliﬁer in BLT mode. This option enables

an even more magniﬁcent sound system to be built.

Stereo Power Amplier A-02

The passion of the moment music is created is passed from the recording site to the listening

room. In that, you the listener share a musical experience with the creators. It is a bridge to just

such a euphoria that Esoteric entrusted this new model of power ampliﬁer to provide.

The A-02 stereo power ampliﬁer is infused with know-how gained from professional studio

devices based on the unique Master Sound Works concept. We pursued sound quality beﬁtting

original master recording playback through collaboration with studio engineers as an extension

of design ideas of the highly esteemed A-03. Moreover, we adopted technologies and

innovative measures to improve speaker driving power expected in professional applications.

Lavish application of high-level craftsmanship was made with a focus on the sound desired by

artists and engineers. That way, music enthusiasts can be treated to the creators’ commitment

to music without any loss of scale and quality.

A true stereo power ampliﬁer infused with technology and

know-how perfected in professional studios: The A-02

Dua l mono a rchitecture

Esoteric MSW Cla ss AB p owe r ampliﬁer b lo cks

High-ca pacity t oroidal t ransf ormer

power supplies

Tw o indep en dent powe r supp lies

for dri ve and inp ut st ages

La rge outp ut tr an sistors f or drive sta ge (to p)

Sch ot tk y bar rier diodes f or current

ampliﬁcation stage (bottom)

Your invitation

to where the artistry

of music is created

Produktspecifikationer

Varumärke:	Esoteric
Kategori:	mottagare
Modell:	A-02
Färg på produkten:	Oranje
Certifiering:	ANSI/TIA-568-C, UL 1863
Kontaktledarmaterial:	Goud
Drifttemperatur (TT):	-40 - 68 °C