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Beyerdynamic A 20

Beyerdynamic A 20

Headphone amplifier

  • 2x Stereo jack outputs 6.35 mm, in parallel mode
  • Frequency range: 10 - 100,000 Hz (-1dB)
  • Total harmonic distortion (THD): 0.01 % at 170 mW / 250 Ohm
  • Maximum output power: 170 mW / 250 Ohm
  • Signal-to-noise ratio: > 100 dB (unweighted)
  • Channel separation: > 80 dB at 1 kHz / 250 Ohm
  • Analog inputs: 1 Pair RCA
  • Analog outputs: 1 Pair RCA
  • Dimensions: 164 x 212 x 55 mm
  • Weight: 1640 g

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4 customer ratings:

Overall rating
5 out of 5 stars
handling
features
sound
quality
5 Stars
4 Customers

4 customers have given this product a 5-star rating.

Of these, 4 customers have written no texts or given their feedback in another language.

4 Stars
no one
3 Stars
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2 Stars
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1 Star
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1–2 of 2 feedback texts

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Total
handling
features
sound
quality

Powerful workhorse

iph, 06.04.2015
Super-processed headphone amplifier with sufficient output voltage for driving even headphones with high impedance. Absolutely noise-free. Sound is crystal clear and unadulterated. No artificial elevation of depths or depths. Few features; Is simply doing what he is supposed to do: to operate a maximum of two headphones at a line source. For a technically simple analog device quite expensive; I would still buy it because of the extremely high processing quality. I suspect that this is one of the rare devices that will work perfectly even after 20 years of use.
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Total
handling
features
sound
quality

Think of the jacket flow filter

Holger676, 28.04.2017
The device makes a very valuable impression when unpacking and turning the controller. Then the first disappointment: hum and siren, and even in variations when I move the mouse on the PC.

Reason:
- PC power supply is grounded (Schuko plug)
- A20 is grounded (also Schuko plug)
- Coupling of audio interface to A20 not symmetrical, are RCA jacks

Solution:
- Jacket flow filter. I have not found one at Thomann, so I bought the "Oehlbach 9052 Audio Linear 8" Cinch-Isolating filter / noise filter / jacket current filter.

Result:
- Perfect sound without noise
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395 €
Free shipping incl. VAT
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item number 345219
sales unit 1 piece
available since August 2014
Total rating
handling
features
sound
quality
sales rank
in this category Rank 17
at thomann.de Rank 4720
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Offers include 24% Greek VAT and are valid as long as stocks last. Shipping costs to Greece are 20 EUR, free shipping on orders above 298 EUR. Please click here for international Shipping rates. We do not accept liability for typographical errors or inaccurate information of any kind. *RRP = manufacturer's / distributor's recommended retail price in Germany
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