0 item(s) in basket
Total:£0.00
Currency Convertor:
Pound Sterling Euros US Dollars Japanese Yen Australian Dollars Hong Kong Dollars Swedish Krona

New Rega RP3 £100 OFF!
Payments
Payments
Like Analogue Seduction? Show it on Facebook!
More offers and great deals in our eBay shop!

Musical Fidelity AMS100 Power Amplifier

more products by Musical Fidelity
Available Options:

Available
Ref. Code: mufiams100

£12,998.99 inc. VAT

No customer reviews yet.*
Average: No customer reviews yet.
(Click here to review this product)

Musical Fidelity AMS100 Power Amplifier


AMS100 background information

The AMS100 is the most advanced pure Class A amplifier ever made. I know that this is a sweeping and powerful statement, but it is true.

Circuit topology

As far as I know the AMS50 is the first ever 50 watt pure Class A bridged amplifier. There are many advantages to a bridged amplifier; lower distortion and huge power supply noise rejection. These advantages are even more significant in a pure Class A configuration.

The AMS100 has the same basic circuit as the AMS50 but even more of it. In fact the AMS100 has precisely the same circuitry and number of output transistors as our monster Titan.

The AMS100 circuit configuration is unique and delivers excellent technical performance (more about technical matters below) and a beautiful sound.

Power supply configuration

Power supply configuration is usually the “poor relation” in amplifier design. Normally huge effort is put into the circuit and layout but the PSU configuration is taken for granted. Not so for the AMS100!

Pure Class A amplifiers draw enormous current. This exposes any deficiencies in power supply design. The AMS100 has a unique, never done before in the history of hi-fi, power supply design. Please click on the related files above to see some circuit illustrations which show the major differences between the AMS100 and any other amplifier.

Looking closely at the AMS100 you can see that it has the following differences to the AMS50:

  1. Separate power supply for each half of the bridge. This allows each half to operate perfectly. It is highly significant for dynamic stability.

  2. Each power supply (for each half of the bridge) has its own separate, dedicated dual bifilar choke regulator. Musical Fidelity’s unique dual bifilar choke regulation system has a power supply noise rejection ratio of 88 to 1. This is the equivalent of multiplying capacitance by more than 88x. It is a huge effect on the technical and sonic performance of the amplifier. Additionally it provides excellent mains noise filtration.

  3. The AMS100 uses a large number of high performance capacitors. This allows it to deliver remarkable dynamic consistency under all load conditions.

N.B. Each half of the bridge has its own separate power supply and dual bifilar choke regulator system. There are a total of 4 dual bifilar chokes in each AMS100.

To the right is a picture of the before and after effect of our dual bifilar choke regulation system.

You can easily see the "saw tooth" pattern which is composed of a lot of high harmonics and other unpleasant artefacts. After the choke you can see that it is reduced by 88x. All the HF elements are gone. Quite remarkable!

 

Technical and sonic overview

The AMS100 has extraordinary technical performance. Ultra low distortion from 20Hz to 20kHz. At normal listening levels the ultra-low distortion is consistent right up to 50kHz. The AMS100 is the technological tour de force. More important is its sound. The AMS100 has a clean sweet open sound. Huge dynamics are delivered with ease. Bottom end extension seems limitless. And yet the whole sound is tight and cohesive.

The AMS100 realises the full true potential of pure Class A sound. It is expensive, it’s huge, it’s heavy and it sounds like heaven.

The AMS100 has been designed for an elite band of audiophile purists who want the ultimate Class A amplifier ever made. We don’t expect to sell many. Those lucky few who get their hands on one will be fulfilled.
 

 
This product has no reviews added yet.

Listed above are the reviews for this product as written by other customers. If you would like to add your own review, please complete the form below and click 'Submit'. Please note all fields that have a star ( * ) are required.

If you would like to tell a friend about this product, please complete the form below and click 'Send'. Please note all fields that have a star ( * ) are required.






SSL