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. 

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  • Regular price £10,950.00
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Octave MRE 130 Power Amplifier (price for pair)

Ruler of the Sound

The MRE 130 mono amplifiers are push-pull power amps in pentode configuration, producing approximately 140W per channel at 2% THD. The MRE 130 monos are designed to reproduce the vast scale of a large orchestra in its entirety. From the deepest bass, to the highest note- all the musical information is conveyed without loss of dynamic details. Raw emotion, stunning detail and rich voices - the MRE delivers fireworks. There are power amps on the market which can’t run because of the power they have, whereas the MRE 130 can sprint. The sum of all its sonic characteristics makes the MRE 130 a suitable partner even for the exalted Jubilee preamp.

OCTAVE power amplifiers have always set new standards. With the introduction of the original RE 280 stereo power amplifier, Andreas Hofmann left traditional power amp technologies far behind. With the MRE 130, Hofmann has gone one step further. While it has the same power management and optimized input stage as its stereo brother, the MRE 130 benefits from an innovative and enhanced output stage configuration. What is revolutionary about this new generation of amplifiers is that OCTAVE has employed the classic, yet almost forgotten, pentode configuration.

The classic pentode configuration was quite commonly used in earlier power amplifiers. It offered the benefits of reliability and a relatively high power output. From a modern perspective, its disadvantage was reduced dynamic stability and a high level of distortion. These effects are not a direct result of the pentode itself, but rather of the circuitry employed at the time. Andreas Hofmann has now developed a new circuit design that eliminates the drawbacks of the classic pentode configuration. This novel design involves the use of a second, separate power supply circuit for the auxiliary current required for the pentode mode of operation. The characteristics of this enhanced pentode circuit employed in the MRE 130 are virtually ideal from both a sound quality and an engineering point of view.

Technical Data

Power Output 130 Watt into 4 Ohm
Frequency Response 10 Hz - 80 kHz / ± 0,5 dB
Total Harmonic Distortion < 0,1% at 10 Watt into 4 Ohm
Signal-to-Noise Ratio > 100 dB
Minimum Speaker Impedance 2 Ohm
Gain / Input Sensitivity + 30 dB / 1 V
Connections 1 x RCA
1 x XLR Input
Features Bias Adjustment, Power Management
Power Consumption 160 Watt idle, 320 Watt at full power
Standard Accessory: Power cord, 3 mm Screwdriverr for BIAS Adjustment, 1 sparetube KT88/6550
Weight 22,7 kg each Amplifier

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.

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. 

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