AUDIOPHONICS MOS-120 Amplifier Class A/B 2x120W / 4 Ohm Black

Average votes for this product
4.8 / 5

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Reference : 13085
New product

199,00 €tax incl.

165,83 € tax excl.
Including 0,05 € for green tax

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Shipping date: 04-12-2024.

Orders placed before 12h (GMT+1) will generally be shipped the same day (working day).

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Facturation France
SAV France

2 Years warranty

Accessories for this product

Find here a selection of useful and/or essential accessories for this product. These are specially selected by the Audiophonics team according to the characteristics of the product.

 
More info

MOS-120 discrete integrated amplifier

Amplifier 2x120W @ 4 Ohm / Volume Control / MOSFET IRFP240 & IRFP9240

Amplifier power mosfet

This integrated amplifier is inspired by PASS circuits and operates two high power MOSFET IRFP240 / IRFP9240. Its power stage offers massive power and detailed sound reproduction. Low frequencies are deep and emphasize the soundstage. Ideal for bringing thick and precise sound to a large room.

Ab class amplifier transistor

Discrete input stage transistors

The design of the input stage involves only discrete components. The signal goes symmetrically through a structure based on pairs of complementary transistors.

It is designed from paired transistors and arranged in a symmetrical structure. The models used are A42 and A92 transistors, capable of withstanding high voltages before distorting the sound.

This configuration limits any bias current before the power stage Class AB, which significantly limit the distortion.

Three integrated levels of protection

The device is equipped with an OMRON relay (switch delay) which ensures effective protection against unwanted noise (crunches and thumps) during power on and power off.

There is also a UPC1237 protection (protection amplifying stage & loudspeakers on each channel with overload detection) / a DC protection and a rectifier bridge at very low resistance.

OMRON amplifier protection
Class AB linear amplifier alim

Linear power supply

To match the specifications of the input stages and amplifier, this amplifier has a linear regulated power supply with a very effective design. This will directly affect the overall sound precision of the amplifier.

This power supply is operating with a diode bridge 50A (Japan Sanken) selected for its very low internal resistance.

50V capacitors 10000uF complement the power stage.

Toroidal transformer

The power stage operates through a 300VA toroidal transformer with impressive size.

The latter is maintained on the casing by an anti-vibration stabilizer seal.

In order to prevent electromagnetic interference and noise that may affect the signal quality, the transformer is insulated from the rest of the circuit by the internal radiator.

Slightly noticeable noise from the toroidal transformer.

Cheap power amplifier toroidal transformer
Amp MOSFET, transistors, power

Power amplifier stage

The AB class power amplifying stage uses complementary transistors C5171 and A1930.

All elements of the power stage arevented and  mounted on a large radiator to dissipate heat efficiently and to gain power without degrading the sound / prematurely wear the equipment.

Parts supplied
Amplifier 2x120Wx1
Characteristics
TypeIntegrated amplifier
Volume ControlYes
Source selectorNot
THD<0.02%
Power2x 120W 4ohm
Frequency response10Hz - 40kHz
SNR95dB
InputsRCA
OutputsSpeaker cable socket
Power supply220V AC 50Hz
Dimensions190 x 70 x 311 mm
Weight5.3 kg
Power cableNot inclued
 
Data sheet
InputRCA
OutputSpeaker terminal
ColorSilver
ColorBlack
Channel2 (Stereo)
ClassClass A / AB
Amplifier chipC5171
Amplifier chipA1930
Power (W)120.0
Remote ControlNo
 
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Average votes
4.8 / 5
34 reviews
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Note :
 5/5
Date :
Awesome!
Search for character and be surprised. It has plenty of power, detail and is tuned to be funn. So glad i found this unit :)
 (1)
 (0)
This review has been posted for AUDIOPHONICS MOS-120 Amplifier Class A/B 2x120W / 4 Ohm Black
Note :
 5/5
Date :
Simple, good sounding amp
The MOS-120 is a very nice amp, I like it a lot. Sounds quite warm, without substantial coloration - all as per my taste. The build quality is also great. I would recommend it to anyone, who searches for a very simple, compact, single input amplifier.
 (1)
 (0)
This review has been posted for AUDIOPHONICS MOS-120 Amplifier Class A/B 2x120W / 4 Ohm Black
Note :
 4/5
Date :
EXCELLENT RAPPORT MUSICALITE / PRIX
Mon avis sur ce petit MOS 120 se réfère à une expérience personnelle de quarante ans où j’ai possédé pas moins d’une dizaine d’amplificateurs de classes A, AB et plus récemment de classe D. Le MOS 120 a une sonorité typique des bons amplis de classe AB à base de Mosfet, les timbres sont pleins, avec un grain enviable, la définition est bonne sur tout le spectre, l’image stéréo est exceptionnelle pour un produit proposé à ce prix, panoramique, vaste dans les trois dimensions de l’espace. Toutefois par rapport aux amplis de classe D, ce MOS 120 ne possède pas la même franchise, sa dynamique est plus sage et cela est assez regrettable pour l’expressivité. Le MOS 120 ne possède pas non plus une transparence aussi poussée que la plupart des classes D, en particulier si on la compare à l’étonnant Aiyima A07 max, il subsiste en effet un très léger voile, ‘scorie’ typique des classes AB quels qu’en soient leurs prix. La restitution est assez satinée voire mate ce qui ne plaira pas à tout le monde mais confère une douceur souvent appréciée. Bref, un très bon ampli de classe AB avec des limitations typiques de cette classe. Pour ma part je trouve que les bons amplis de classe D surpassent les classes AB en matière de transparence et de dynamique et font jeu égal en image stéréo.
 (0)
 (0)
This review has been posted for AUDIOPHONICS MOS-120 Amplifier Class A/B 2x120W / 4 Ohm Black
Note :
 5/5
Date :
Très bon produit
Acheté pour un second système, c’est un très bon ampli, bien fabriqué et aux qualités musicales réelles.
 (1)
 (0)
This review has been posted for AUDIOPHONICS MOS-120 Amplifier Class A/B 2x120W / 4 Ohm Black
Note :
 5/5
Date :
Très surpris en bien
Je mis attendais pas a une présentation du son pareille. Plein de détail mais pas fatigant. Bravo!
 (1)
 (0)
This review has been posted for AUDIOPHONICS MOS-120 Amplifier Class A/B 2x120W / 4 Ohm Black
 

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