Beyerdynamic A20 Headphone Amplifiersearch

Beyerdynamic A20 Headphone Amplifier

Beyerdynamic A20 Headphone Amplifier

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Beyer’s Best Friend

When you have a pair of high powered headphones operating off high impedance, you won’t hear anywhere near their potential unless you route them through an amplifier. Giving you a powerful headphone amp optimized for ideal audio, the Beyedynamic A20 Headphone Amplifier lets you drive your cans clear across the entire sound range.

Beyerdynamic A20 Headphone Amplifier

Sack the DAC

While a lot of amps add an integrated DAC, Beyerdynamic wanted to concentrate solely on the amplifier for maximum performance. Limited to only an analog circuit, the A 20 will stay relevant for years to come, even as your digital components become outdated. Additionally, you can easily pair the A20 with any DAC, giving you more freedom of choice in your quest for perfect sound.

Beyerdynamic A20 Headphone Amplifier

Build Me an Amp

Every aspect of the A20 bespeaks quality, from the brushed aluminum housing with seamless construction to the ALPS potentiometer that allows variable volume control. The internal circuitry is modeled after Beyerdynamic’s top of the line A1, so you can count on the quality of its output. Speaking of which, you have your pick of two headphone jacks in front, as well as an analog RCA output in the back, letting you listen with a friend or keep multiple pairs plugged in, just in case.

Beyerdynamic A20 Headphone Amplifier

Fight the Power

As the A20 features a built-in power supply, you don’t have to worry about an external source adding distortion to the signal. Furthering signal strength, the input line is entirely free from signal loss, courtesy of the hard-wired RCA output. Able to cater to two headphones with nominal impedance from 30 to 600 Ohms, the Beyerdynamic A20 Headphone Amplifier is a truly powerful sound booster that brings new scope to every song.

Beyerdynamic A20 Headphone Amplifier


  • Brushed aluminum housing
  • Volume control for both headphone output
  • Looped-through input to connect signal sources and amplifiers
  • Internal wide-range switching power supply
  • Frequency range- 10 Hz - 100 kHz (-1 dB)
  • THD- 0.01% at 170 mW / 250 Ohms
  • Maximum output power- 170 mW / 250 Ohms
  • Unweighted signal-to-noise ratio- > 100 dB
  • Channel separation- > 80 dB at 1 kHz / 250 Ohms
  • Input impedance- 25 kOhms
  • Input voltage- 100 - 240 V AC / 50/60 Hz
  • Power consumption- < 10 W via integrated switching power supply
  • Output impedance- 100 Ohms through headphone output
  • Maximum amplification- 18 dB
  • 2 1/4 in (6.3 mm) stereo jack outputs
  • 1 pair RCA analog inputs
  • 1 pair RCA analog outputs
  • Weight- 57.85 oz (1640 g)
  • Dimensions- 6.46 x 8.35 x 2.17 in (164 x 212 x 55 mm)


  • 1 type E+F power cable
  • 1 type B power cable


All orders will be shipped by Massdrop.

Estimated ship date is Sep 8, 2014 PT.

After the drop ends, payment will be collected and the group’s order will be submitted to the vendor up front, making all sales final. Check the discussion page for updates on your order.