Description
Atoll Electronique MA100 Power Amplifier
The Atoll Electronique MA100 Power Amplifier adopts a careful audiophile design with balanced amplification stages using high quality discrete components.
The power supply is generous in order to offer a strong reserve of current and allow the amp to keep pace at high volume and in the bass. It also offers a fast rise time, ensuring excellent transient response. Everything takes place in a robust steel frame, housed behind a brushed aluminum front panel of great sobriety.
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Features
The Atoll MA100 power amplifier operates in pure class A on the first 10 watts of power, thus offering an extremely low distortion rate as well as a very fast response on transients, and then switches to class AB.
It delivers a power of 2 x 60 watts into 8 ohms (150 watts in mono mode) and can easily power speakers with multiple drivers or those deemed to be difficult. Under 4 ohms, the amplification power increases to 2 x 80 watts.
- The connectors of the Atoll MA100 power amplifier include an RCA line input and output, as well as two pairs of speaker terminals. Note that these take place at the upper left and right ends of the rear panel, to facilitate wiring.
- The ideal companion to the Atoll HD120 pre-amp and digital/analog converter , the Atoll MA100 power amp delivers a lively, dynamic sound that is much more robust than its size would suggest. Very musical, it thus offers an excellent opportunity to build a compact chain with separate elements with remarkable acoustic qualities.
Technical Specifications
Design
Symmetrical amplification stages
Discrete components
MOS-FET transistors (2 per amplification channel)
Power supply: 170 VA toroidal transformer
Total capacitive: 16600 µF
Operates in class A up to 10 W, in class AB beyond
Stereo or mono (switch on rear panel)
Aluminum front panel, 4 mm
thick Steel frame, 1.5 mm thick
Amplification
Effective power:
2 x 60 W under 8 ohms
2 x 80 W under 4 ohms
1 x 150 W in bridged mono mode under 8 ohms
Measurements
Input impedance: 110 kohms
Sensitivity: 1.68 V
Signal-to-noise ratio: 100 dB
Distortion at 1 KHz: 0.05%/10W
Bandwidth: 5 Hz – 200 KHz
Rise time: 2 µs
Connections
1 x RCA input
1 x RCA output
1 x 12V trigger input
Screw terminals, gold-plated contacts
General
Dimensions (WxHxD): 320 x 83 x 230 mm
Weight: 4 kg
