Roksan K3 Power Amplifier


The K3 Power Amplifier is the natural partner for the K3 Integrated Amplifier and is the perfect way to upgrade your K3 system it's 140W per channel amplifier will offer more headroom, grip and control. It can be used as a straight pre/power combination with the K3 Integrated or to form a bi-amplification (or tri-amplification) system for the ultimate drive and power to your loudspeakers. Whichever way it is used, the smooth and powerful sound of the K3 Power Amplifier will be a superb, synergic improvement to your system.


- Improved amplifier PCB
- Symmetrical amplifier layout
- Optimised power supply layout, distribution and decoupling
- Better decoupling and power regulation to all stages
- Directly powered power amp section
- Improved grounding  
- Optimised routing and short speaker output cables
- New improved protection circuit
- Improved wideband noise rejection
- Reduced residual hum and noise
- 0.5W standby operation with auto detect and a 30 minute timer



Stereo RCA Stereo
XLR balanced

Stereo loop RCA
Stereo loop
XLR balanced

Input Impedance
23 kΩ

Input Sensitivity
(115W) - 900 mV

Speaker Output
L & R (x1)

Output Power
> 140W (8Ω) > 220W (4Ω)

Power Supply
500 VA Ultra Low Noise Toroidal Transformer

Damping Factor
>110 (8Ω)

Frequency Response
(-3dB), <3Hz - >100kHz

31.6 dB

Harmonic Distortion
<0.003% 1kHz - 8Ω

130dBr (ref. 33.5V)

Power Source
220V - 240V 50Hz / 60Hz

Power Consumption
Warm up mode <25W
Full Power <800W

432 x 380 x 105mm (incl. feet)


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.

Stock Information : We have (this number of your chosen variant) 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 


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*

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 3:30pm. Terms apply.

Free Saturday delivery when you spend over £375. 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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