Beyerdynamic A20 2-Channel Headphone Preamp

£439.00 (including VAT @ 20%)

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30 day money back guarantee included

30 day money back guarantee included

Once the product is delivered, you have 30 days to decide that you definitely want to keep it. If you decide it is not suitable for any reason, you can return it back to us for replacement or full refund, including standard delivery charges.

All Products are new unless stated, and include a minimum of one year warranty.

Some items are only eligible for money back guarantee if they are returned to us unused and sealed in the original packaging, and in the case of software, unregistered. These items include:

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  • Mouthpieces, Reeds etc… for Woodwind and Brass instruments
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We are unable to accept returns of any custom made items designed to work together as a unique package, such as computer system built to a customer’s personal specifications. Exceptions may only be possible with prior agreement of the vendor, and may be subject to a cancellation fee.

Optional: 5 year warranty: £21.95
(Includes 90 day money back guarantee)


The product price includes a one year warranty and 30 day money back guarantee.

However, the Gear4music extended warranty scheme provides an enhanced service, and is designed to offer a higher level of protection than many 'free' warranties offered by some retailers and manufacturers.

The highlights of this enhanced warranty service are:

  • Warranty is extended to 5 years from the date of delivery.
  • Our Money Back guarantee is extended from 30 days to 90 days (terms apply after 30 days)
  • Collection and delivery costs are included for the first two years
  • Claim 50% cash back on the cost of the policy after 5 years if it has not been used!
  • Warranty is transferable if the item is re-sold
  • Loan or replacement equipment will be provided if the product isn't repaired within 30 days
  • If an item can not be repaired, a similar alternative product or cash discount (as defined in this policy) will be offered
  • The policy can be cancelled within 30 days, and at any time after that for a pro-rata discount

Please note that this extended warranty is currently only available on products sold within the EU or EEA, and is subject to the terms and conditions as detailed on the extended warranty certificate provided.

For customers in outlying areas of the country, the price of the Extended Warranty may be marginally higher, due to the potential for higher collection and redelivery transport costs.

This enhanced warranty is in addition to the standard Gear4music and manufacturer warranty policies, and the Gear4music terms and conditions of trade. No statement or condition of sale contained within these terms affects or restricts your statutory rights as defined under the Consumer Contracts Regulation 2014.

Product Ref: 51872

  • 2 x 1/4'' Headphone Jack Outputs
  • 18 dB Maximum Amplification
  • Brushed Aluminium Housing
  • 1 x RCA Input
  • 1 x RCA Output

Beyerdynamic A20 2-Channel Headphone Preamp

The Beyerdynamic A20 Headphone Preamp is a powerful, stylish and extremely useful 2 channel headphone preamp which offers fantastic high fidelity audio reproduction in a compact and durable package. Featuring dual 1/4" Jack outputs at the front of the unit for connecting headphones, RCA inputs/outputs, transparent operation sound for an untainted tone and compatible with even 600 ohms headphones the Beyerdynamic A20 Headphone Preamp provides a professional 2 channel headphone pre-amp in a stylish and robust housing.

Product Ref: 51872

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  • 15.9%
  • £15.35
  • £552.60
Pay by Finance

To make it as easy as possible for you to get the gear you want, we offer a range of instant finance options. If you spend £250 or more online, you can choose to pay over 48, 36 or 24 months. The majority of decisions are given instantly, so you could get your new gear sooner than you thought!

Representative Example

To help you understand how our finance options work, the examples below are based on a total order value of £250:

Finance APR Deposit to Pay Payments Total Payable
Classic Credit 48 Months 14.9% 14.9% No Deposit 48 months: £6.83
Final payment: £6.83
No settlement fee
Classic Credit 36 Months 15.9% 15.9% No Deposit 36 months: £8.65
Final payment: £8.65
No settlement fee
Classic Credit 24 Months 18.9% 18.9% No Deposit 24 months: £12.41
Final payment: £12.41
No settlement fee

How to Apply

Applying for finance couldn't be easier - if your order totals £250 or more, simply proceed through the checkout as normal, then select Pay by Finance on the payment page, then click the orange APPLY FOR INSTANT FINANCE button. This will start your application with V12 Retail Finance, our finance partner, and completing this form should take approximately 10 minutes.

You should get an instant answer on whether your application has been successful, though in some rare cases V12 may need to look at the application in more detail.

Please note: This is only available on orders placed via the website and is not available in store or via phone currently.

Full Description

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Incredible Sound

Based on the iconic A 1 reference headphone amp the Beyerdynamic A20 provides accurate and high fidelity audio reproduction and extremely discrete output stage to provide large power even for high-impedance headphones whilst the dynamic, open and precise tonality sets the A20 apart from other standard headphone amplifiers.

Durable and Sleek

The A20 also incorporates a brushed aluminium shell to provide a rugged, durable and sleek housing. With no visible screws and an original ALPS rotating potentiometer for volume control the A20 can withstand scrapes and bumps when taken on the road for a remote recording session or even just be used in the studio.


  • 2 x Headphone Outputs
  • Volume Control for Both Headphone Outputs
  • Looped-Through Input to Connect Signal Sources (CD Player, DVD Player)
  • Internal Wide-Range Switching Power Supply for Worldwide Use
  • Elegant and Solid All-Metal Housing
  • Particularly Open, Transparent Sound
  • Also Suitable for 600 Ohms Headphones


  • Input Impedance: 25 Ohms
  • Maximum Amplification: 18dB
  • Frequency Response: 10 Hz - 100 kHz (-1dB)
  • THD: 0.01% at 170 mW
  • Channel Separation (1kHz): >80 dB
  • Output Power (600 Ohms): 100 mW
  • Output Power (250 Ohms): 170 mW
  • Output Power (30 Ohms): 150 mW
  • Signal-to-Noise Ratio: >100 dB
  • Output Impedance: Headphone Output - 100 Ohms
  • Input Voltage: 100 - 240 V AC / 50/60 Hz
  • Power Consumption: < 10 W via Integrated Switching Power Supply
  • Inputs: 2 x Headphone (1/4" Stereo Jack), 1 x RCA
  • Outputs: 1 x RCA
  • Dimensions: 164 x 194 x 48mm
  • Weight: 1.64 Kg