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Kronos AV
Kronos AV
Advance Acoustic
Advance acoustic was formed after the decision was made in Toulouse France, to create a new French brand with an idea which was both simple and audacious: to design audio equipment, reasonably priced but with faultless musical quality. Speakers were the first products off the production line, with 5 models becoming available.
These were an instant success and received high praise from many French magazines. In 2002, Advance Acoustic added electronics to their product catalogue, while keeping the same simple philosophy, reasonably priced without compromising on sound quality.

Advance Acoustic X-i50BT Amplifier + K3 SE Bookshelf Speakers (BUNDLE SALE)
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  • Sale
  • £515.00
  • Regular price £689.00
  • Available Worldwide Shipping

The Advance Acoustic X-i50BT Amplifier is the perfect all-round amplifier for someone looking for the ultimate flexibility. The X-i50BT incorporates a built-in phono stage (MM), built-in Bluetooth and a range of other inputs, so you have the flexibility of using a range of sources. Also, the X-i50BT comes with a disconnectable preamp, so you can add a separate power amp in the future, offering you great upgradability.  

The Advance Acoustic K3 SE speakers are the perfect match for this amplifier. Its balance and neutrality make the Kubik K3SE an ideal speaker with naturalness and refinement. The K3 SE are 89Db into 4-8 ohms so the Advance Acoustic X-i50BT amplifier with its 50w per channel on 8 ohms is more than capable of producing a simply stunning sound for the price. 


X-i50BT Amplifier

Output Power 8 Ω: 2 X 50 W RMS
Output Power 8 4 Ω: 2 X 65 W RMS 

Bandwidth (-3dB): 10 Hz - 30 kHz 
Tone Control: +/- 10 dB 
Distortion: <0.15 %
Signal / Noise Ratio> 85 dB
Channel Separation> 70 dB 
Bluetooth A2DP 

Input Impedance: 10 kΩ
Phono Impedance: 47 kΩ 

Auxiliary Input Level: <550 mV 

Amplifier Input Level <1.25 V 

Level of Input phono input: 2.5 mV 

Supply voltage: 230V
1 Toroidal transformer 
Dimensions: H.11 cm x W.43 cm x D.32 cm 
Net weight: 6 kg

Inputs/ Outputs

1 phono MM 
1 CD 
1 Tuner 
4 Auxiliary 
1 PC2 
1 USB for MP3 key 
1 Record 
Amp - Disconnectable preamp 
1 Pair of speakers

K3 SE Bookshelf Speakers

Bandwidth: 45 Hz - 22 kHz 
Filter: 12/12 dB / Octave 
Number of HP and channels: 2/2 
Yield: 89 dB 
Impedance: 4 - 8Ω Amp 
Power: For 30 to 100 Watts amp 
MDF cabinet 
Finish: Black or White 
Bass Reflex (Rear Vent) 
Boomer 13 cm 
Tweeter 2.5 cm Neodymium Magnet Single 
Terminal Block Wiring - Banana Sockets 
Dimensions: H.25.5 cm x W.17 cm x D.24.5 cm 
Net Weight (each piece) ): 3.6 kg

We decided to put this package together because it offers you the chance to add a vast range of sources, from turntables to Bluetooth, while also having options for CD, Aux etc... This package also leaves you the option for future upgrades, again by adding sources or adding a separate power amp. The X-i50BT amplifier works well with the K3 SE speakers, offering a natural sound, while remaining compact and easy to use. 

If you would like more information, please get it touch by calling us on 03435236169 or emailing us at

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