Kronos AV
HECO is a brand name that represents a rich and long tradition in German speaker production. Since the day the company was founded more than six decades ago, it has been committed to developing an uncompromising, high quality reproduction of music in a home environment.
Legendary speaker series have shaped the image of the brand to date. The fact that HECO has reinvented itself time and again over more than sixty years of its history - spanning a period that has witnessed some of the most important developments in hi-fi technology - is a testament to the strength and innovative power of the brand. 
Countless accolades and test victories are proof of this passion for perfection. We combine our expertise to produce outstanding products.
German HIFI since 1949 – and still ahead of the times.

Heco Concerto Grosso Loudspeakers
Free Gift

  • Sale
  • Regular price £6,799.99

Floor-standing speaker, 4-way base reflex configuration with additional passive radiator

The greatest concert master ever – only the best components are good enough for the top-of-the-range model in the Heco speaker portfolio, now available to mark Heco´s anniversary. High-gloss paintwork and an MDG housing with multiple bracing to ensure a highly stable design ensure even the highest demands for sound quality will be satisfied.
This can also be seen in the chassis features of the impressive box over 1.30 meters in size: A 300 mm woofer, installed as side driver, and a 300 mm bass radiator are supplemented by a 200 mm woofer/midrange driver, a 170 mm midrange driver and a 30 mm dome tweeter. With a frequency response beginning at a sensational 16 Hz and only ending at 52 kHz, the Concerto Grosso guarantees perfect reproduction of any signal source – including high-resolution audio files, like those highly sought after by discerning music lovers. 


  • Woofer, woofer-midrange and midrange with solid aluminium
  • die-cast basket and Klippel®-linearized magnet system for
  • very low distortion
We have several deomonstation areas in both of our branches. Please give us a call on 03435236169 or email to enquire about hearing products at your local branch. 

Please always contact us before to make sure the product(s) are available

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