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Musical Fidelity 550K Supercharger

Musical Fidelity 550K Supercharger
alaScore 80

5 reviews

Dec, 2018

We have collected and analyzed 4 expert reviews and 1 user reviews from international sources. Experts rate this product 90/100 and users rate it 100/100. The average review date is Dec 3, 2007. We have compared these reviews to 218307 reviews from other Receivers & Amplifiers. The alaScore™ for this product is 80/100 = Very good. Last update: Dec 17, 2018.

Review analysis

(Based on 5 reviews)

Expert Reviews  

User Reviews  


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Showing 1 - 3 of 3 Show Reviews: in English | in other languages (2)

Expert review by : What Hi-Fi? (

Musical Fidelity 550K Supercharger review


If you're seeking fireworks, light the blue touch paper, and retreat a safe distance – the MF 550K Supercharger won't disappoint

Huge gains in authority, controls and dynamism positively revel in high volumes

Not without a specific sonic character ; lacks a little resolution

Bend your speakers to your iron will by treating them to an abundance of power: if a £3000 amplifier upgrade appeals, hear these

Nov, 2007

Expert review by (

Musical Fidelity 550K Supercharger


Supercharger. It's a word that has an undoubtedly romantic ring, reminiscent of the Hon. Henry Birkin and his Bentley Boys, sweeping their way to four successive Le Mans victories in the 1920s

Offers good sound, and superior dynamic range and headroom across a range of material, Comes with versatile line- or speaker-level inputs

Supercharger concept works well with valve amps, but sounds best when used just as power amp, fed from pre-amp, Could be crisper and tauter

This exceptionally powerful and unusually versatile power amp delivers good sound, ultra-wide dynamic range and offers lots of headroom for peaks. The Supercharger concept is particularly well suited for use with high-quality, low-power (valve) amps.

Nov, 2007

Expert review by : Jutta Dziwnik; Test Report Steve Holding (

Musical Fidelity 550k SuperCharger


What the hell is a Supercharger? More importantly what the hell does it do? Perhaps even more importantly: ‘Do you need one?’

Product Specifications

The Supercharger 550K uses the latest in low distortion circuitry in a bridged configuration which delivers 550 watts rms. The Supercharger 550K is designed to increase the dynamic range of an existing lower powered amplifier (from 50 watts to 200 watts) to 550 watts. The dynamic range will increase by up to 10dB. This does not necessarily mean that the average listening level will be much louder; its just that musical transients will now be delivered without distortion or limiting. Overall the listening experience is greatly improved because of dramatically lower distortion and increased dynamic range. The 550K accepts both speaker level and line level inputs. When driven from an existing amplifier the sound quality is greatly improved because the 550K presents an easy load for the existing amplifier to drive and at the same time gives up to 10dB increase in dynamic range. Alternatively, the Supercharger 550K can be used as a conventional power amplifier driven by a high quality preamp. The Supercharger 550K is a perfect answer to improve dynamic range in a single beautifully engineered package. Used properly and carefully, it should give many years of outstanding musical reproduction. Dust regularly with a soft duster or soft brush, but be careful when using cleaning or polishing agents - they may harm the surface finish. If there are further questions about any Musical Fidelity component, please consult the dealer from whom it was purchased, who is there to help and give advice.