Beyerdynamic : A 20 Beyerdynamic

Headphone amplifier Two 6.35 mm headphone outputs for shared listening with a partner Elegant and especially resonance-free full metal housing Can be connected esily to any high-level source for 600-Ohm headphones


The A 20 headphone amplifier is used to operate up to two headphones with a nominal impedance from 30 to 600 ohms. 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 A 20 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 A 20 can be operated with 110 V/60 Hz and 240 V/50 Hz, allowing for global use.

BEST SOUND AND FLEXIBILITY COMBINED
With a high-gain RCA input, the A 20 works easily with most sources. The input signal can be looped through and is entirely free from signal loss thanks to the hard-wired RCA output. The A 20 guarantees an especially open and transparent sound with any headphones, no matter if having a low or a high impedance.

Also in terms of flexibility, the A 20 leaves nothing to be desired: the knob made of solid aluminium is equipped with an original ALPS potentiometer for variable volume control. On top of that, the A 20 features dual headphone jacks on the front.

SUPERIOR SOUND
The discrete output stage provides plenty of power, even for high-impedance headphones, as well as a balanced sound for long periods of comfortable listening.

ATTRACTIVE AND ROBUST
With its housing made of brushed aluminium, the A 20 is not only especially resonance-free but also displays an attractive appearance. Without any visible screws or seams on the housing, it appears to be made of just one piece.

MUSIC FOR TWO​​​​​
With the dual headphone jacks on the front, two people can listen to the A 20 together without an adapter cable.

HI-RES AUDIO
The A 20 is Hi-Res Audio certified and can handle high-resolution audio files which, when played back, retain all their musical details and come as close as possible to the original recording.

Features

• 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 (1 x type E+F (CEE 7/7) and 1 x type B)