B2 Audio Duo MKII 2 Ch Amplifier

Code: B2-Audio-Duo-2ch-Amplifier

God like power output with this Duo 2ch Class A/B amplifier


Only 2 left in stock (can be backordered)

Only 2 left in stock (can be backordered)



High End SQ vs Dynamic Dimensions now in RED Anodized finish!

Improving a benchmark proved to hard, the first Duo was at its best for several years & is still considered unique. But we are not known to dwell, therefore we started working on the successor. The MKII Duo.

Rather than improving the old version, we opted for an entirely new layout. The heatsink was widened allowing a better ratio for heat dissipation. On the input side there are now 2 x 0 GA power terminals, which comes in handy for the 25% increase in power at 1 ohm.

The entire audio section was also refined. Now it features oversized tiffany RCA inputs, upgraded 24 db/ Oct crossovers with bandpass function & even the possibility of a dual mono with individual gain per channel. We even made designated click potentiomenters for accurate corresponding crossover frequencies.

If you are truly in love with class A/B and know the strenght of the old Duo, then the MKII will exceed that impression by far. Dynamics have never been of this dimension, the new Duo ushers in a new era of full range response to any unit you will pair it with.

Product Manual

Specification 14.4V 14.4V Bridged Drop 14.4V Bridge
Power @ 4 Ω: 2 x 500 w 1 x 1800 w 1 x 2300 w
Power @ 2 Ω: 2 x 900 w 1 x 3000 w 1 x 4000 w
Power @ 1 Ω: 2 x 1500 w*
Frequency Response: 15 Hz ~ 40 KHz
Signal to Noise Ratio: 100 dB
Input Sensitivity: 6 ~ 0.2 V
Crossover: 24 dB / Oct
High Pass Filter: 20 Hz ~ 500 Hz / 200 Hz ~ 5 Khz (multiplier x 10)
Low Pass Filter: 50 Hz ~ 500 Hz / 500 Hz ~ 5 Khz (multiplier x 10)
Bass Boost: 0 ~ 18 dB
Bass Boost Frequency: 35 Hz ~ 120 Hz
Damping Factor: 800<
Power Terminal gauge: 0 GA x 2
Fuse Rating: 300 A
Operational voltage: 10 V ~ 16 V


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Additional information

Weight 15 kg
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UK Delivery

All items ordered before 14.00pm are shipped the same day unless otherwise stated at the time of ordering. Orders placed after 14.00pm on a Friday will be shipped the following Monday (excluding bank holidays, in which case it will be the next working day). If the item is out of stock for whatever reason you will be emailed within 24hrs to inform you of this. Our site manages stock inventory so if it says ‘IN STOCK’ that means goods are available for immediate dispatch.

  • Shipping will be calculated at the checkout.
  • Free shipping available for customers in the UK mainland ONLY when orders are over £50.
  • We use Interlink Express for all UK next day deliveries (aswell as for orders over £50 if the weight exceeds 2kg) and Royal Mail Recorded Post for orders under 2kg.

Make sure you supply us with a mobile number when you order, then we can give you full tracking information & updates on your order throughout the process.

Clicking on the above image, will also allow you to track your order online. If you have any questions or queries, contact our helpful office team on sales@bladeice.com

Free Delivery

Free delivery is available to UK mainland addresses  ONLY and excludes addresses in the Scottish Highlands & Islands and Northern Ireland. Free delivery is applicable to orders over £50.00 (inc vat) ONLY. This offer doesn’t necessarily mean your goods will be sent on a courier next day service. However assuming the weight exceeds 2kg your goods are usually sent via courier (Interlink Express).

Guranteed 24 Hour

  • Next Day Delivery – Over £50 Inc. VAT – Any weight – Free!
  • Next Day Delivery – 2-5KG – £8.00
  • Next Day Delivery – 5-20KG – £9.99
  • Next Day Delivery – 20-30KG – £11.99
  • Next Day Delivery – 30-40KG – £15.00
  • Next Day Delivery – 45KG+ – £50.00


  • Royal Mail 1st Class Recorded 1-3 working days – Upto 1KG – £4.45
  • Royal Mail 1st Class Recorded 1-3 working days – Upto 1-2KG – £6.90
  • Royal Mail 2nd Class Recorded 2-5 working days – 0-2KG – £3.95


  • Royal Mail Special Delivery Saturday – Upto 2KG – £14.00
  • Courier Saturday – Upto 5KG – £15.95
  • Courier Saturday – 5-20KG – £19.95
  • Courier Saturday – 20-25KG – £22.95

Orders MUST be made before 2pm Friday

Back Order

Items that are listed with ‘Back order’ usually means there is around a 5-10 working day delay for the item to be back in stock. Some items are listed in this way as they are a low volume product and are considered special order with our suppliers.

European & International Delivery

Blade ICE ships internationally to many countries in Europe. Based on the weight of your order shipping will be calculated at the checkout.

Blade ICE reserves the right to charge the full shipping fee applicable to resend if the item is returned to us as the customer was unable to take delivery of the parcel for any reason. Courier returned items will be added back into our stock and your account credited with the order total, minus the fee the courier charges us to deliver the item back to us. You will have to re-place the order to have the item reshipped. If a customer inputs any incorrect details on their order, which causes the parcel to be delivered incorrectly, we will not hold any responsibility for this parcel.

Finally we advise you to check the contents of the order with the inventory sent with the goods. In the rare instance that goods are missing, please contact us within 24 hours and we will happily send out the missing goods at no extra cost to you. If goods are damaged or faulty please inform us within 3 working days of receiving your order.

Please refer to our Terms and Conditions for more information.