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Kronos AV
Kronos AV
The idea behind OCTAVE is a passion for music combined with ingenious electronic attitude and an absolute commitment to perfection. The technically innovative, perfectly manufactured, completely safe and user-friendly amplifiers that offer elegant aesthetics while allowing the beauty of the music and its authentic sound to come alive in living rooms.
What distinguishes OCTAVE? The conviction that true musicality in high fidelity can only be realized with tubes? Surely. But that‘s not the sole factor. The secret of our success lies in the OCTAVE hybrid technology. By that, we mean the optimal synthesis of traditional tube technology and innovative semiconductor circuitry. Tubes ensure the remarkable sound performance of our amplifiers, while our innovative transistor circuits play an important part in enabling the tubes to completely maximize their audiophile potential. 

Octave Jubilee Mono Power Amplifier (Pair)
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  • Regular price £49,500.00
  • Available Worldwide Shipping

The Jubilee power amplifiers
After more than 20 years, we felt the time was right to explore the limits of power amplifier technology. And so the Jubilee monoblocs were born. Achieving the dream of producing a matching power amplifier for our highly regarded reference preamplifier demanded a completely new power amplifier design, an uncompromising approach to amplifier size, and a rigid insistence on the highest standards. The target of our ambition was to develop a tube amplifier with substantial power reserves and an exceptional performance. The result is an extraordinary product in both appearance and sound quality. The OCTAVE team has no reservations in claiming that the Jubilee series power amplifiers are indeed very, very close to the original objective of perfection.
Monoamplifier   Jubilee Monoamplifier
Tube Complement   8 x 6550 C ( SED ) / 4 x ECC 82 each Amplifier
Design   Aluminium silver or Aluminium black
Center Front: 20 mm black Granit or grey Slate.

  Power Output   250 W into 4 Ohm  
  Frequency Response   10 Hz - 80 kHz / ± 0,5 dB  
  Total Harmonic Distortion   < 0,1% @ 10 Watt into 4 Ohm  
  Signal to Noise Ratio   > 103 dB  
  minimum Speaker Impedance   2 Ohm  
  Gain/Input Sensitivity   + 30 dB / 1,5 V  

1 x RCA

1 x XLR Input


ECO Mode, Bias Adjustment

  icon Download: Owners Manual  
  General Facts      
  Power Consumption   320 Watt Leerlauf, 600 Watt at full power  
  Weight   65 kg each Amplifier  
  Standard Accessory   Power cord, 3 mm Screwdriver for BIAS Adjustment  
  Dimensions   H x W x D = 707 mm x 280 mm x 484 mm  
  Dimensions (in mm)

... are the guarantors of a perfect sound.
The Jubilee monoblocs do not „make“ music; they retain the music – faithful to the highest standards of high fidelity according to the principle that nothing is more beautiful than the original.

... revolutionize tube amplifier technology.
A newly developed driver stage perfects the push-pull principle and results in unequalled load stability.

In combination with the high-capacity power supply, which is backed by a double transformer with full-wave rectification, the Jubilee monobloc amplifiers provide a pulse-power of 300 watts per channel at the output in the bandwidth of 20 Hz to 80kHz.

These unusual reserve capacities explain the brute dynamics as well as the superior performance of this singular tube power amplifier.

... represent a maximum of reliability. 
The power management, soft-start of all tube functions and precise stabilization circuitry lead to perfect conditions that enable incredible reliability and longevity.

... play safe.
The power amplifiers are protected extensively from operator error or tube faults by the comprehensive safety electronic systems. In the rare case of a tube short circuit, the worst-case scenario results in a fuse de-energizing the power supply virtually instantaneously. 

The Jubilee line
Sound at its best

We are still delivering orders as normal. When your order ships you will still receive tracking details. For UK shipments, Our couriers have procedures in place to ensure deliveries are arriving as quickly & safely as possible. Drivers can now sign for your parcels, however will notify you that they have arrived, in order to ensure you receive your parcel. Signing for the parcel has now been stopped temporally for hygiene reasons. Drivers are also working with customer instructions, so you can ask them to leave the parcel in a safe place (doorstep etc...) if you prefer not to come into direct contact with the driver.

There has been no changes to deliveries with Brexit. All deliveries to the UK mainland, Northern Ireland and the Republic of Ireland are operating as normal. No VAT or charges are applicable. 

Express Deliveries

Express Delivery is FREE on all orders over £50. Express Delivery offers delivery in 24-72 hours from time of purchase. We use premium couriers for this service, mainly DPD & Royal Mail. DPD will offer you a one hour window for delivery to make sure someone is at home, or you can reschedule the delivery if no one is around. 

Standard Deliveries

Here at Kronos AV, we have vast experience with e-commerce sales. Making sure that your parcel arrives undamaged is a huge priority for us. That’s why at Kronos AV, we only use premium couriers for all our orders. All our parcels are shipped with DPD or Royal Mail and are always sent Signed For to make sure it gets to the right person. 

If for any reason your parcel does arrived damaged, please get in touch, and we will be happy to get everything resolved for you. We are always on hand to help!


Delivery is FREE on all orders over £50. In order to offer FREE delivery to UK customers, we use several premium couriers to ensure your delivery arrives safe.

Most large orders (over 2kg) ship using DPD or DHL courier and smaller orders (under 2kg) by Royal Mail signed for services.

The most appropriate courier will be chosen for the items ordered to ensure the quickest possible delivery.

We can offer very generous trade in offers across the majority of our product range. 

Why not ask and see how much you HiFi is worth!

To find out how much your HiFi is worth... Click Here

If you have any question, please feel free to call us on 03435236169 or email