Dan D’Agostino

Dan D'Agostino Progression M550 Mono Amplifier

£25,500
Finish:

There is no mistaking the D’Agostino family styling of the second generation Progression M550 Mono Amplifier. Immediately grabbing one’s attention is the new heat sink design. Drawn directly from the flagship Relentless Mono Amplifier, each heatsink is milled from a single, 48.5-pound (22-kilogram) aluminum billet slab. This highly efficient elliptical form dramatically improves the cooling ability of the design and assures that the Progression M550 Mono Amplifier runs safely and reliably even when delivering its full-rated power.  Reflected in the model name, the Progression M550 Mono Amplifier delivers 550/1,100/2,220 watts into 8/4/2 ohms.

The Progression M550 includes major revisions to the input topology. Distortion, signal/noise ratio, channel separation, and bandwidth measurements have all improved. New transistors handle six times the power of the previous components and a new DC coupling circuity has improved low frequency performance and extended the bandwidth of the amplifiers. Pairing this advanced front end to the enhanced output stage has improved the dynamic impact, detail retrieval, and spatial integrity of the amplifier’s playback.   The audio signal path throughout is discrete, balanced, and direct coupled. Advanced protection techniques shield the amplifier and associated components from any unexpected anomaly.

Exploring New Dimensions

A new power device provides the foundation for an upgraded output stage. This new transistor, first used in the Relentless Mono Amplifier, extends high frequency response, increases power handling by a factor of four and features tighter tolerance gain matching between complementary NPN/PNP pairs. A wider safe operating area and superior gain linearity provides greater thermal stability throughout the amplifiers’ power delivery. Coupling the new output device to the high efficiency heat sink design affords an increase in operating bias. The higher bias specification has increased the Class A operating range of the Progression M550 to 70 watts. The result is improved instrument timbre and tonal reproduction for a great percentage of listening.

Maintained from the original amplifier is the Super Rail topology, a simple concept but complex in execution. Every amplifier employs a voltage rail, actually two, a positive one and its companion negative partner. Voltage rails support the delivery of power to the speaker. The music signal swings between these two rails but due to natural loss, the musical signal never reaches the output rails’ full capability. A Super Rail overcomes this limitation. Borrowing the idea of a turbo in a car engine, the Super Rail employs higher voltage rails in the sections prior to the output stage. This voltage "boost" allows the musical signal to exploit the full capability of the output voltage rails. Extending the musical signal swing closer to the output rails maximizes the performance of the output circuitry design itself. Nearly ideal output stage operation results with improved dynamics, lower distortion, and a fierce grip of the speaker. The output topology employs 48 power transistors anchored by a 2,000 VA power supply transformer and nearly 100,000 microfarads of power supply storage capacitance.

Legendary Purity

The anodized Aluminum faceplate includes the iconic look of the company’s power meters. The Progression M550  Mono Amplifier 180° meter needle is driven by a high-speed ballistic circuit improving the meter’s responsiveness.  The longer needle arc covers the amplifier’s entire output range.

With innovative circuitry and virtually unlimited power output, the Progression M550 Mono Amplifiers deliver intimate musical details, three-dimensional sound staging, and startling dynamics not possible from less capable designs.

Specs

Frequency Response
 
1 Hz to 80 kHz, -1 dB / 20Hz to 20 kHz, ±0.01 dB
Signal-to-Noise Ratio
 
105 dB - unweighted / 75 dB - A weighted
Finish
 
Silver or Black with Custom Finishes Available Upon Request
Input Impedance
 
100 KΩ
Output Impedance
 
0.1Ω
Power
 
550 watts @ 8Ω 1,100 watts @ 4Ω 2,200 watts @ 2Ω
Distortion
 
550W @ 8Ω .015% @ 1 kHz
Inputs
 
1 balanced XLR
Dimensions
 
17.875 x 9.0 x 23.0 in / 45.4 x 23.0 x 58.4 cm
Weight
 
115 lb / 52.2 kg

We our in the process of updating our Doug Brady Hi Fi website, which now provides you with automatic real-time stock updates. We believe in an honest approach when displaying the availability of products. When viewing a product listing page, you'll see one of the following stock indicators. 

Stock Information : We have 1 in stock. 

In Stock - Order Now - Delivered free to you on [delivery-date] 

This item is brand new and guaranteed in stock from our shop stock.
Our shop stock will be dispatched on the date displayed on the product page, delivery will be booked for the delivery date displayed. We will send you a DPD tracking number where you will be given a 1 hour time slot on the day of delivery. 

 

In Stock - 2-3 day Dispatch - Delivered to you FREE by  [delivery-date] 

This item is brand new and in stock at our off site warehouse.
Stock being dispatched from our off site warehouse may take a day or two longer for you to receive. We may also dispatched directly from the manufacturer or distributor. This is often the case for particularly large or heavy items where specialized service is required. For anything which can take time to get to you, we'll contact you quickly.

Available to Order - ☎ - 01925 828009

Availably to order. Occasionally, due to stock demand, we can sell out. We either have this on order with stock due in or we do not usually have back up stock of this item in store. When you make a purchase, we will inform you quickly when the item is due in from the manufacturer and deliver as soon as it arrives with us. Usually this is only a short wait of 3 - 5 days, we will contact you with a estimated delivery time.

Sold Out

This item is currently sold out with the supplier or manufacturer please call us so we can give you an estimated time. 01925 828009 

Available*

Some manufacturers request we do not sell Items online so these items are only available to collect from our store.

In Stock - Free Next Day Delivery*

Platinum Jubilee 2022 Bank Holiday Delivery Schedule

DPD

Ordered (pre-3pm) Expected Delivery Extra Information
Tuesday 31st May

Wednesday 1st June

 

Wednesday 1st June Saturday 4th or Sunday 5th June (if requested) If next day delivery is selected then delivery will be made on Tuesday 7th June.

Free next working day delivery when you spend over £75. We will send you a tracking number where DPD will give a one hour delivery window. Services available Monday to Friday (excluding public holidays) to most mainland UK addresses for in stock items ordered before our cut-off time at 3pm. Terms apply.

Free Saturday delivery when you spend over £500. We will send you a tracking number where DPD will give a one hour delivery window. Services available to most mainland UK addresses for in stock items ordered before our cut-off time on Friday 3pm. Terms apply.

* Excludes CLICK & COLLECT items  Some of our manufactures request for there items not to be sold on line for these items our delivery service may not be available in curtain locations so please call to order 01925 828009

Delivery Costs

Standard next day delivery is free for all orders to most UK mainland addresses. All other delivery prices are determined by the destination, the service chosen and the value and weight of your order. Addresses in the Scottish Highlands, offshore, Northern Ireland & Ireland may incur additional delivery costs, depending on the items ordered.

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