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Power @ 1Ω: 1 x 850 watts
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THD @ Rated Power < 0.2%
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Power @ 2Ω: 1 x 600 watts
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Power @ 4Ω: 1 x 400 watts
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Signal to Noise Ratio > 85dB
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THD + Noise < 0.2%
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Efficiency > 85%
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Frequency Response 10Hz to 200Hz ±1dB
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Input Sensitivity .25v to 5v
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Dimensions in mm: 160(W) x 52(H) x 301(L) Overall: 160(W) x 52(H) x 326(L)
Zapco ST-850XM
Mono Class D Bass Amplifier
All the ST-XM Class D bass amps are 1Ω stable as necessary in today’s market.
Description
Related products
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Match M 2FX
Tiny amplifier with big ambitions – the M 2FX combines smallest dimensions with huge power and highest versatility.
Equipped with an active crossover with high- or lowpass, stereo line input and highlevel inputs with ADEP circuit as well as further top-notch features this ultra compact two channel amplifier perfectly acts as a stand-alone amplifier for demanding speaker systems or as power source for subwoofer applications. Due to its load stability the M 2FX is almost predestined for driving subwoofers with 2 x 2 Ohms impedance.
The proprietary Class GD technology combines excellent sound quality with extraordinary high efficiency. Thanks to its minimal dimensions and low heat dissipation unprecedented space saving and hidden installation concepts can be realized that were previously impossible.
In combination with the five channel amplifier M 5DSP from the MATCH portfolio the M 2FX is literally a “perfect MATCH”.
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Helix M FOUR
If you like to rev up your front and rear speakers, the M FOUR will be exactly the right “tool” to do so. With generously 100 Watts RMS per channel into both 4 Ohms and 2 Ohms load this amp will heat up your voice coils in no time despite its super-compact dimensions. On the other hand the M FOUR stays totally cool thanks to the highly efficient Class D design topology. 3-channel or 2-channel configurations are possible as well, delivering up to 2 x 200 Watts RMS of clean and undistorted output power.
Needless to say that the M FOUR is equipped with a bunch of intelligent attributes like “start-stop capability” and our proprietary “ADEP” highlevel input so that it easily deals with all installation challenges of modern cars. Finally the extensive audio features will offer a sound quality at its best.
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Match M 5DSP MK2
Huge power in a tiny format
Hardly bigger than a smartphone but a giant in performance with an incredible output power of 400/ 800 Watts RMS/ max. and five amplifier channels.
These amazing figures in such a tiny space result from Audiotec Fischers proprietary Class HD-technology, which guarantees an unrivaled efficiency and therefore minimum heat dissipation. Even better – this offers unimagined possibilites when choosing the mounting location.ACO – Advanced 32 Bit platform
The M 5DSP MK2 is the first MATCH amplifier equipped with our new, extraordinary powerful 32 Bit ACO platform. This provides higher speed during the communication with our DSP PC-Tool software, but also when switching between the 10 internal memory locations for sound setups. In addition, the ACO offers an integrated, channel-separated Input EQ and Input Signal Analyzer (ISA), e.g. for compensating any kind of equalizing in the factory radio.Latest DSP technology
The extremely powerful 64 Bit audio DSP with its seven channels offers in combination with the CoProcessor ACO amazing DSP sound features, like the “Augmented Bass Processing”, the “StageXpander” and the “RealCenter” function and thus completely new possibilities in sound tuning.Power on demand
That’s unique – the M 5DSP MK2 features two power modes, allowing it to run either in “HighPower” mode for maximum performance or in “MidPower” mode with reduced output power and lower power consumption for Plug & Play applications without a separate power supply.Intuitive DSP PC-Tool
Such a bunch of technology must remain operable – our professional and user-friendly DSP- PC Tool software V4 impressively demonstrates that a huge feature set and an easy configuration can be perfectly harmonized. -
Helix G ONE
The new G amplifiers are more than just impressive power packs. They unite innovative technology, extensive functionality and best sound with a very attractive price to performance ratio.
If we do not talk about their more obvious features, such as fully active crossovers with highpass, lowpass, bandpass, bass boost and input mode switch for flexible input signal routing and smart high level input with ADEP circuits, we can still talk about how the G series also provides Start-Stop capability which is an exceptional feature in this price range. Wait, that’s not all… a remote control for adjusting the subwoofer level is included as part of the deal.
With such an extensive list of features in this piece of equipment, it is really not hard to realize a sound system in your car that has a great sound and lots of power for when you need it most.
Furthermore, the G amplifiers have the compact and straight HELIX design that has become synonymous with HELIX. In addition, for those who love a good light show, the logo has been illuminated for your viewing pleasure.












