Dan D’Agostino

Dan D'Agostino Progression S350 Stereo Amplifier

£33,998

The Dan D'Agostino Progression S350 Stereo Power Amplifier adds a potent stereo option to the Progression family.  Leveraging our innovative Super Rail circuitry, the Progression S350 Stereo Amplifier exploits this unique technology delivering remarkable control and fidelity to any connected loudspeaker.

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. Our 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. The result is improved dynamics, lower distortion, and a fierce grip of the speaker.

Abundant power is required for realistic sound quality and is a cornerstone of Dan D’Agostino Master Audio Systems’ amplifier design. The Progression Stereo continues this practice. A graceful anodized Aluminum chassis houses a 2,000 VA power supply transformer coupled to nearly 100,000 microfarads of power supply storage capacitance. Paired to this foundation is a fully complementary driver stage, and output circuitry outfitted with 48 power transistors - 24 each for the left and right channels generating an imposing output. Initially used in the Relentless Mono, the output power device provides the foundation for an upgraded output stage. This transistor extends high frequency response, increases power handling 50%, 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. Higher operating bias lowers crossover distortion improving instrument timbre and tonal reproduction. The Progression Stereo delivers 350 Watts into 8 Ohms and delivers 700 Watts into 4 Ohms, and properly doubles its output again into 2 Ohms, with a 1,400 Watt power output. The essence of live music, dynamic contrasts, are faithfully reproduced with leading edge transients spectacularly depicted.

Inspired by the elegant faces of classic Swiss watches, the Progression S350 Stereo is fronted by an exposed movement power meter. Featuring two 90° needle swing arms, a high-speed ballistic circuit enhances the meter’s responsiveness. Longer swing arms improve readability across the amplifier’s entire output range.

Drawn directly from the 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 S350 Stereo Amplifier runs safely and reliably even when delivering its full-rated power. Standard finishes include silver and black with custom painted finishes available on request.

Combining innovative circuitry and significant power, the Progression S350 Stereo amplifier provides loudspeakers the control element they need to achieve their full design expression.

Specifications

Signal-to-Noise Ratio
 
105 dB, unweighted / 75 dB A weighted
Finish
 
Silver or Black with Custom Finishes Available Upon Request
Total Harmonic Distortion
 
350W @ 8Ω .015% @ 1 kHz
Input Impedance
 
100 KΩ
Output Impedance
 
0.1Ω
Power
 
350 watts @ 8Ω 700 watts @ 4Ω 1,400 watts @ 2Ω
Distortion
Inputs
 
2 balanced XLR
Dimensions
 
17.875 x 9.0 x 23.0 in / 45.4 x 22.9 x 58.4 cm
Weight
 
115lb / 52.2 kg

We are in the process of updating our Doug Brady Hi Fi website, which now provides you with automatic real-time stock updates. .

When viewing a product listing page, click on the option/colour of the product you require then you'll see one of the following stock indicators.

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

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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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