Micromega IA-400 MM IA 400 SILVE Leaflet
Product codes
MM IA 400 SILVE
13-15 rue du 8 Mai 1945, 94470 Boissy Saint Leger, France
Tel : +33(0)1 4382 8860 Fax : +33(0)1 4382 6129
AUDIS sarl
06/09/2010
R&D Department
IA-400 HIGHLIGHTS
The world is changing rapidly and for many audiophiles simplicity and ease of use is
now a must. Today, the trend of multiple boxes system seems far away, and the
arrival of new types of audio sources, mostly computer based, is increasing the
demand for integrated systems.
Micromega, with over 20 years of experience in amplifier development, is proud to
announce IA-400, a very powerful integrated amplifier capable of driving almost all
types of speakers, even the most demanding ones.
Despite the fact that the unit is integrated, we can consider it as two different units in
the same box: the preamplifier section and the power amplifier.
The preamplifier is a very low noise state of the art gain section with extremely low
noise power supplies and sophisticated layout to avoid any ground loop. A specific r-
core transformer is dedicated to all low levels signals, avoiding cross coupling
between the two sections and preventing any disturbance from the mains line to
enter the product. Ultra low noise regulators are feeding the preamplifier section to
allow very accurate low level resolution. Input switching is done by relays and the
input impedance of 100kΩ guarantees that the preamplifier section will not load the
different sources connected to it. Volume control is achieved by a digitally controlled
resistor ladder with extremely low distortion. The output of the preamplifier section is
buffered by jfet amplifiers and then balanced to avoid ground coupling between the
preamplifier section and the power amplifier modules.
The power amplifier section has its own 1kVA toroïdal “quiet design” power
transformer, followed by ultra fast soft recovery rectifiers and 4x 10000µF smoothing
capacitors in a dual mono configuration. These modules are classD modules with no
less that 400W/4Ω output power capacity. The choice of classD has been dictated by
our quest for reliability, size and sonic quality, together with high efficiency and low
temperature operation. The modules are protected for under voltage, overvoltage
and short circuit. A DC detection circuit prevents any damage to the loudspeakers in
case of a dramatic failure occurring to the power modules.
In addition, IA-400 provides a great number of features, some being unique to this
kind of amplifiers. A blue VFD display, with 7mm high characters, readable for up to
10m, gives at all time, a clear status of the unit, indicating channel selection and
playing level. A balance setup is available and has an indication on the front display.
A very high quality MM phono section will please all vinyl record lovers. A sub out,
associated with a pass through sub in, allows for different setup when using the IA-
400 in a 2.1 system or when using the IA-400 as front amplifier in a multi channel
setup. All inputs can be named from a library list stored in the memory of the unit.
Unused inputs can be switched off to optimize access time. A headphone amplifier is
available with a front output and its separate volume control setup is stored in the
product. A true monitor loop is accessible for users willing to insert an external unit in
the signal path.
The case work with its sandblasting finish, available in two colors silver or black, is
superb and the build quality is to the highest standards.
now a must. Today, the trend of multiple boxes system seems far away, and the
arrival of new types of audio sources, mostly computer based, is increasing the
demand for integrated systems.
Micromega, with over 20 years of experience in amplifier development, is proud to
announce IA-400, a very powerful integrated amplifier capable of driving almost all
types of speakers, even the most demanding ones.
Despite the fact that the unit is integrated, we can consider it as two different units in
the same box: the preamplifier section and the power amplifier.
The preamplifier is a very low noise state of the art gain section with extremely low
noise power supplies and sophisticated layout to avoid any ground loop. A specific r-
core transformer is dedicated to all low levels signals, avoiding cross coupling
between the two sections and preventing any disturbance from the mains line to
enter the product. Ultra low noise regulators are feeding the preamplifier section to
allow very accurate low level resolution. Input switching is done by relays and the
input impedance of 100kΩ guarantees that the preamplifier section will not load the
different sources connected to it. Volume control is achieved by a digitally controlled
resistor ladder with extremely low distortion. The output of the preamplifier section is
buffered by jfet amplifiers and then balanced to avoid ground coupling between the
preamplifier section and the power amplifier modules.
The power amplifier section has its own 1kVA toroïdal “quiet design” power
transformer, followed by ultra fast soft recovery rectifiers and 4x 10000µF smoothing
capacitors in a dual mono configuration. These modules are classD modules with no
less that 400W/4Ω output power capacity. The choice of classD has been dictated by
our quest for reliability, size and sonic quality, together with high efficiency and low
temperature operation. The modules are protected for under voltage, overvoltage
and short circuit. A DC detection circuit prevents any damage to the loudspeakers in
case of a dramatic failure occurring to the power modules.
In addition, IA-400 provides a great number of features, some being unique to this
kind of amplifiers. A blue VFD display, with 7mm high characters, readable for up to
10m, gives at all time, a clear status of the unit, indicating channel selection and
playing level. A balance setup is available and has an indication on the front display.
A very high quality MM phono section will please all vinyl record lovers. A sub out,
associated with a pass through sub in, allows for different setup when using the IA-
400 in a 2.1 system or when using the IA-400 as front amplifier in a multi channel
setup. All inputs can be named from a library list stored in the memory of the unit.
Unused inputs can be switched off to optimize access time. A headphone amplifier is
available with a front output and its separate volume control setup is stored in the
product. A true monitor loop is accessible for users willing to insert an external unit in
the signal path.
The case work with its sandblasting finish, available in two colors silver or black, is
superb and the build quality is to the highest standards.