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Authorized dealers for Atohm S250-MK2-X

  • Ambiance Concert — in-store — Angers, Pays de la Loire, France (website)
  • AMPL’HIFI — online and in-store — Nîmes, Occitanie, France (website)
  • Art Sonique — France (website)
  • Audio Absolute — in-store — Tambon Bang Khun Kong, Chang Wat Nonthaburi, Thailand (website)
  • AUDIO-CONSEIL — in-store — Saint-Étienne, Auvergne-Rhône-Alpes, France (website)
  • AUDIOPHONICS — in-store — Bordeaux, Nouvelle-Aquitaine, France (website)
  • Audioplus Hi End — in-store — San Benedetto del Tronto, Marche, Italy (website)
  • Auditorium A. Le Bourhis — online and in-store — Lanester, Bretagne, France (website)
  • CLES MUSICALES — in-store — Bordeaux, Nouvelle-Aquitaine, France (website)
  • CONCERT HOME — online and in-store — Paris, Île-de-France, France (website)

and 21 more verified dealers

Atohm S250-MK2-X #1
Atohm S250-MK2-X variant 1
Atohm S250-MK2-X variant 2
Atohm S250-MK2-X variant 3
Atohm S250-MK2-X variant 4
Atohm S250-MK2-X variant 5
Atohm S250-MK2-X variant 6
Atohm S250-MK2-X variant 7
Atohm S250-MK2-X variant 8
Atohm S250-MK2-X variant 9

Atohm S250-MK2-X

France flag

Specialized in designing and manufacturing high-end driver units and acoustic speakers, ATOHM has also been designing and offering high-performance amplifier modules for subwoofers for many years. Significant consecutive studies have been conducted on components, schematics, implementation topology, general construction, thermal behavior, and reliability. Thanks to our expertise in electro-acoustics, these studies take into account the actual behavior of speakers and their limits. Our exclusive X-GUARD™ technology ensures that the excursions of bass drivers never exceed an absolute limit at the lowest frequencies.


For over 10 years, our modules have been equipped with ICE POWER® power and supply stages. These ensure flawless power output. With exceptional current capabilities and very high damping factors, they are capable of powering any type of speaker. Combined with our exclusive U-GUARD™ technology, these stages provide smooth clipping and remain protected from any massive saturation.


ATOHM modules offer a purely analog signal processing that is designed to perfect the coupling of the woofer(s) with their load and to exploit all the dynamics without abrupt tonal changes or suspicious behavior when the system reaches its limits. Devoid of subsonic filters and latency, the adjustable dual low-pass filters allow for an ideal acoustic summation with any type of speaker. ATOHM modules offer a wide range of settings and connections to meet all audiophile Hi-Fi and home theater applications.


In these latest MK2 versions, we have prioritized French partners for the development and manufacturing of our CMS circuits and various parts. Ultimately, each unit is fully assembled, wired, and tested in our workshops, ensuring optimal quality.


High-quality technical and musical performances in a minimalist footprint.


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View at Atohm
Specifications

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Specifications

Power output stage
ICE POWER (R) D-CLASS
Amplifier module power
220W rms/4ohms/80s/LFE mode
Impedance
load 4-16 ohms (3ohms mini)
Max. peak current (stage threshold)
20A
Damping factor
above 1000
Signal / Noise ratio
96dB(A)
Harmonic distorsion
below 0.1%
Subsonic crossover
None / X-Guard technology (Active excursion control )
Latency
0ms - full analog circuits
Low pass crossover
adjustable from 36 Hz (-3dB) to 178 Hz (-3dB)
Filtering slope
adjustable Butterworth 12dB or 24dB- switchable to LFE
Phase control
0-180°
Low level input
2x RCA + 1 XLR
High level input
2x 4mm banana plugs
Output
4.8mm terminals on the rear cup
Short circuit
Protected
Overheat protect
Yes
DC protect
Yes
soft start delay
yes - 2sec.
Supply voltage
115 V / 230 V (internal jump) 50 Hz
Power consumption
320 Wmax 7W at iddle
Dimensions
220*190*55 (mm) 8.66*7.48*2.16 (inch)
Weight
0.9 kg / 2 lbs
Specification
Main power cable / 80cm speaker cable with fast on connectors / 10 * 4.0*25mm screws
Parametric EQ

Manufacturer's Description — Atohm

Specialized in designing and manufacturing high-end driver units and acoustic speakers, ATOHM has also been designing and offering high-performance amplifier modules for subwoofers for many years. Significant consecutive studies have been conducted on components, schematics, implementation topology, general construction, thermal behavior, and reliability. Thanks to our expertise in electro-acoustics, these studies take into account the actual behavior of speakers and their limits. Our exclusive X-GUARD™ technology ensures that the excursions of bass drivers never exceed an absolute limit at the lowest frequencies.


For over 10 years, our modules have been equipped with ICE POWER® power and supply stages. These ensure flawless power output. With exceptional current capabilities and very high damping factors, they are capable of powering any type of speaker. Combined with our exclusive U-GUARD™ technology, these stages provide smooth clipping and remain protected from any massive saturation.


ATOHM modules offer a purely analog signal processing that is designed to perfect the coupling of the woofer(s) with their load and to exploit all the dynamics without abrupt tonal changes or suspicious behavior when the system reaches its limits. Devoid of subsonic filters and latency, the adjustable dual low-pass filters allow for an ideal acoustic summation with any type of speaker. ATOHM modules offer a wide range of settings and connections to meet all audiophile Hi-Fi and home theater applications.


In these latest MK2 versions, we have prioritized French partners for the development and manufacturing of our CMS circuits and various parts. Ultimately, each unit is fully assembled, wired, and tested in our workshops, ensuring optimal quality.


High-quality technical and musical performances in a minimalist footprint.


Atohm logo

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Authorized dealers for Atohm S250-MK2-X

  • Ambiance Concert — in-store — Angers, Pays de la Loire, France (website)
  • AMPL’HIFI — online and in-store — Nîmes, Occitanie, France (website)
  • Art Sonique — France (website)
  • Audio Absolute — in-store — Tambon Bang Khun Kong, Chang Wat Nonthaburi, Thailand (website)
  • AUDIO-CONSEIL — in-store — Saint-Étienne, Auvergne-Rhône-Alpes, France (website)
  • AUDIOPHONICS — in-store — Bordeaux, Nouvelle-Aquitaine, France (website)
  • Audioplus Hi End — in-store — San Benedetto del Tronto, Marche, Italy (website)
  • Auditorium A. Le Bourhis — online and in-store — Lanester, Bretagne, France (website)
  • CLES MUSICALES — in-store — Bordeaux, Nouvelle-Aquitaine, France (website)
  • CONCERT HOME — online and in-store — Paris, Île-de-France, France (website)

and 21 more verified dealers

Ambiance Concert logo
AMPL’HIFI logo
Art Sonique logo
Audio Absolute logo
AUDIO-CONSEIL logo
AUDIOPHONICS logo
Audioplus Hi End logo
Auditorium A. Le Bourhis logo
CLES MUSICALES logo
CONCERT HOME logo