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Kronos AV
Kronos AV
Diapason was founded in 1987 by Alessandro Schiavi, who previously had extensive experience in recording studios. His skill in capturing live music in three dimensional space and its faithful reproduction, led to the development of the first speaker by Diapason, the Prelude.
The Prelude, and all the speakers manufactured by Diapason, are designed to offer the highest fidelity and transparency to the absolute sound. Furthermore, our speakers convey the emotional involvement of the live performance.
Each Diapason speaker is hand assembled and wired by skilled craftsmen. The beautiful cabinetry is not only an integral part of the design, but the highest example of Italian furniture- making. The cabinets, which are constructed in solid-wood staves and completely handmade by our skilled craftsmen, are assembled in a particular way which makes the whole structure highly rigid and free from resonance.

Diapason Astera Stand-mount Loudspeaker
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  • Regular price £7,890.00
  • Available Worldwide Shipping

Astera is the new reference stand-mount loudspeaker designed by Alessandro Schiavi in collaboration with Roberto Pasetti. It represents the natural evolution of Adamantes III, renowned and appreciated around the world for its exquisite musicality and beautiful cabinetry.

Astera`s cabinet is a work of great artistry, hand-made by the finest Italian craftsmen whose traditional knowledge and skill is carried on from generation to generation.

The multi-faceted diamond shape of the Astera was designed to provide a circular  pattern of soundwave emission, thus giving a close approximation to the theoretical ideal of point-source radiation. The benfits will be appreciated during listening as the loudspeakers themselves `disappear` from the musical scene, providing the listener with a sensation of great detail and realism within a solid and convincing soundstage. Astera`s ability to portray the full sonic spectrum of a recorded musical event is a revelation. Music is endowed with natural transparency, great detail and a correct and convincing feeling of space. Excellent too is the ability of the loudspeaker to reproduce the micro-contrasts of instruments and voices within a complex musical scene without ever losing focus or coherence.

The 4/U dedicated stand for Astera uses Diapason`s own successful formula for resonance control tried and tested over many years with Adamantes III -consisting of high-mass and great rigidity, the use of different materials and point-coupling of cabinet-to-stand. Each stand weighs 26kgs and is 72cm high.

Frequency Response: 38/20kHz

Sensitivity: 88dB/W/M

Nominal Impedance: 8 Ohm

Frequency Crossover: 1600Hz

Type: Rear-ported reflex

Weight: 13 kg each speaker/26Kg each stand

Finish: solid natural canaletto walnut

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. 

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