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Kronos AV
Kronos AV

Beyerdynamic A20 Premium Headphone Amplifier
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  • Regular price £369.00
  • Available Worldwide Shipping

A20 from Beyerdynamic is a headphone amplifier used to operate up to two headphones with a nominal impedance from 30 to 600 ohms.

A headphone amplifier for demanding music lovers! A20 is a true champion in a compact format. The dynamic, open and precise sound sets it apart from what can be found in the normal output stages of regular amplifiers or receivers. It is the perfect choice for all music lovers who want to get the best out of their headphones in the living area or at the computer.

The power amplifier, of a discrete design, and the combination of selected high-grade components inside the device allows even high-impedance hi-fi headphones to be driven flawlessly over the entire frequency range. The A20 supplies an impressively natural and transparent sound with excellent resolution and spatiality.

The volume control adjusts the volume for both headphone outputs, which are connected in parallel. Its handy button is made of solid aluminium and hides a high-grade ALPS potentiometer with smooth volume values.

Gold-plated RCA phono sockets on the rear are used to connect the audio source and allow a signal transmission without loss. The input is looped-through, which means audio signals that are present at the INPUT sockets are routed to the OUTPUT sockets, even when the device is switched off. Due to the hard-wired design there is no loss.

The high-quality metal housing is made of brushed aluminium and protects against signal scattering and vibration.

Due to the internal wide-range power supply the A20 can be operated with 110 V/60 Hz and 240 V/50 Hz, allowing for global use.

  • Power amplifier of a discrete design in an all-metal housing
  • Two headphone outputs connected in parallel
  • Volume control for both headphone outputs
  • Looped-through input (hard-wired) to connect signal sources (CD player, DVD player) and amplifiers
  • Internal wide-range switching power supply for worldwide use
  • Supplied with two different power cables (1xtype-E+F(CEE7/7) and 1xtype-B)

  • Input Impedance: 25kΩ
  • Maximum Amplification: 18dB
  • Frequency Response: 10Hz - 100kHz (-1 dB)
  • THD: 0.001% at 170mW / 250Ω
  • Channel Separation: >80dB at 1kHz / 250 Ω
  • Output Power: 100mW / 600Ω, 170mW / 250Ω, 150mW / 32Ω
  • Signal-To-Noise: >101 dB (unweighted)
  • Output Impedance: Headphone output 100Ω
  • Input Voltage: 100 - 240 V AC / 50/60 Hz
  • Audio Connections: 2 headphone sockets, 1/4" stereo jack (6.35 mm), 1 line output, 1 audio input via RCA phono sockets
  • Dimensions including housing, feet, sockets: 164 x 212 x 55 mm
  • Weight: 1640g

Supplied Accessories

  • Power cables

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