The Beyerdynamic A20 is a straightforward headphone amp with RCA in, and 2 1/4 inch Neutrik headphone jacks out. It has a very clean Teutonic design reminiscent of the Beyerdynamic A1, features quality components (with a very smooth Alps pot) and has RCA out that is hot (when the input is active) even when the device is turned off.
It puts out 170 mW at 250 ohms and 100 mW at 600 ohm, so not a slouch powering higher impedance headphones. It is worth noting though that the rated output impedance is a whopping 100 ohms.
Looks wise, it is very pretty, and reminds me a lot of the Burson Soloist (in terms of the quality of construction and the solidly manufactured aluminum enclosure.)
What does it sound like?
Sound wise, it is transparent and neutral. A great pairing with Beyer headphones (after all Beyer designed the amp), but it does struggle with power hungry planars. I did not have the opportunity to hear the A20 with IEMs but from what I have read the pairing is hit-or-miss.
What's the competition?
The Burson Soloist SL has a brighter, more forceful sound overall, and also has gain selection. Keep in mind that the Soloist SL puts out 2W at 16 ohms, so it is much more suited for higher end orthos. In the head-to-head between the two the Soloist SL wins, unless you are looking for a transparent amp.
The Schiit Asgard 2 isn't in the same league, and at its usual $250 price point, is clearly the more value-rich selection from a price-performance perspective.
The most favorable matchup for the A20 is the Violectric V90. Both have pre outs, dual headphone jacks, and similar sound profiles. The V90 does have a price disadvantage, though, compared to the A20 on sale.
The best way to think of the A20 is probably to consider it to be a sophisticated version of the Objective O2 amp. Is it worth the money over the O2? It depends if you have the discretionary income to throw on an amp that isn't feature rich. In sum, if you are assembling a neutral setup you need to take a look at the A20, especially if it is on sale. But from a purely price-performance perspective, you may want to take an equally close look at the O2.
It puts out 170 mW at 250 ohms and 100 mW at 600 ohm, so not a slouch powering higher impedance headphones. It is worth noting though that the rated output impedance is a whopping 100 ohms.
Looks wise, it is very pretty, and reminds me a lot of the Burson Soloist (in terms of the quality of construction and the solidly manufactured aluminum enclosure.)
What does it sound like?
Sound wise, it is transparent and neutral. A great pairing with Beyer headphones (after all Beyer designed the amp), but it does struggle with power hungry planars. I did not have the opportunity to hear the A20 with IEMs but from what I have read the pairing is hit-or-miss.
What's the competition?
The Burson Soloist SL has a brighter, more forceful sound overall, and also has gain selection. Keep in mind that the Soloist SL puts out 2W at 16 ohms, so it is much more suited for higher end orthos. In the head-to-head between the two the Soloist SL wins, unless you are looking for a transparent amp.
The Schiit Asgard 2 isn't in the same league, and at its usual $250 price point, is clearly the more value-rich selection from a price-performance perspective.
The most favorable matchup for the A20 is the Violectric V90. Both have pre outs, dual headphone jacks, and similar sound profiles. The V90 does have a price disadvantage, though, compared to the A20 on sale.
The best way to think of the A20 is probably to consider it to be a sophisticated version of the Objective O2 amp. Is it worth the money over the O2? It depends if you have the discretionary income to throw on an amp that isn't feature rich. In sum, if you are assembling a neutral setup you need to take a look at the A20, especially if it is on sale. But from a purely price-performance perspective, you may want to take an equally close look at the O2.
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