Musical Fidelity AMS100 power amplifier


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The Musical Fidelity AMS100 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 it has precisely the same circuitry and number of output transistors as our monster Titan. The 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. Pure Class A amplifiers draw enormous current. This exposes any deficiencies in power supply design. This amplifier has a unique, never done before in the history of hi-fi, power supply design. Below are some circuit illustrations which show the major differences between this amplifier and any other amplifier.

Power: 100 Watts per channel into 8 Ohms (20dBW),
200 Watts per channel into 4 Ohms
Voltage, RMS 28 Volts 20Hz to 20 kHz
Voltage, Peak-to-peak 80 Volts
Current peak-to-peak 200 Amps
Damping factor 200
Output devices 20 per channel
Thermal cut out (internal temp) 70ºC
Balanced Line input:
THD + noise, 20Hz to 20 kHz < 0.005% unwtd.
Signal to noise ratio > 110dB ‘A’-weighted
Input sensitivity for 100 Watts 650mV
Input impedance 50k Ohms
Frequency response 10Hz to 40 kHz, +0, -0.4dB
Line level inputs 1 pair line level XLR (balanced) connectors
1 pair line level RCA connectors
Speaker outputs 4 pair 4mm banana plug/binding posts
Trigger input 3.5mm/⅛” mono jack socket
Trigger level ±5V to ±12V
Power requirement:
Mains voltages: 115/230VAC 50/60Hz (factory pre-set)
100VAC 50/60Hz (alternative)
Consumption: 1200 Watts maximum
14 Watts idle (mains LEDs lit)
Weight: 100 kg 132 lbs unit only, unboxed
152 kg 334 lbs in shipping carton
Dimensions: 483 mm 19 inches wide
325 mm 12¾ inches high including feet
880 mm 34⅔ inches deep (front to back) including terminals

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Providing your item is in stock, the order is usually dispatched within 24 hours. Please remember that postage and packing is completely free for orders over £50*. Out of stock items will be dispatched as soon as they become available, out of stock items can take between 4 to 21 days for dispatch.

Deliveries usually take 1-3 working days. The majority of orders are sent via our couriers'; Interlink Express on a next-day-delivery service. Smaller, low value or light-weight items are normally posted using Royal Mail Recorded or Royal Mail Special Delivery.

Once your product has been dispatched, you will be notified via email and sent a unique consignment number, you can use this number at to check the status of your delivery. If you have provided a mobile telephone number, Interlink's Predict service will notify you by text (and email) of a one-hour delivery window. If the window they suggest is inconvenient, you can change the date of delivery to a later one via text or email.

*We ship free of charge to mainland UK addresses, excluding the Scottish Highlands or 'Out-Of-Reach' Scottish locations. Please consult the post-codes below to see if your location falls within this category. If you are still unsure, please contact us on 01432 354921. We also ship to Northern Ireland, Channel Islands, Scilly Isles, Scottish Isles and Scottish Highlands, however delivery to these locations will incur a charge and can only be sent via a 2-day service.

Shipping CostsMainland UK (Next-Day)Offshore/Out-of-reach (2-day)Northern Ireland, Channel Islands, Isle of Man, Scottish Islands, Scilly IslandsRepublic of Ireland (2-day)
Under £50 Orders £7.50 £12.50 £15.00
Over £50 Orders FREE £19.99 £29.99
Surcharge Orders £50.00 £69.99 £79.99
Saturday Delivery £12.99 N/A N/A
Sunday Delivery £12.99 N/A N/A
Saturday by 12 Delivery £35 N/A N/A


Post codes exempt from the free delivery service include:

Scottish Highlands Post Codes: AB30-38, AB41-42, AB44-56, FK17-99, G83, IV1-28, IV30-39, IV52-54, IV63, KW1-14, PA21-33, PA34-40, PH15-26, PH31-41, PH49-50
Islands Post Codes: HS1-9, IV40-51, IV55-56, KA27-28, KW15-17, PA20, PA41-49, PA60-78, PH42-44, ZE1-3
Northern Ireland: All BT postcodes
Channel Islands Post Codes: JE, GY
Scilly Isles Post Codes: TR21, TR22, TR23, TR24, TR25