Audeze USA LCDX-AA-B-LF + Beyerdynamic A 20 - A20

Power & Sound

This is a very nice little amp. It has has plenty of power to drive my HD800, LCDX, and others. It sounds great: improves bass quality (tighter and little stronger), slightly attenuates upper range highs. There's not much too it so its easy to use. It's a well built and has a nice industrial look. For the price its worth the money.

Godfather of headphones

I am not a big fan of high priced headphones, however in this case..I'd be willing to pay the price for this amazing/phenomenal/magnficient/extraordinary product. As the headphones started playing..I fell in love. Rich and clear quality, with some bass to add some diversity in music. Absolutely loved it. Highly suggest it. I have high standards..so considering the grading on this product, A+ is what I give it.I rarely give A's..

Like a Ferarri Truck

If Ferarri made a truck and then transformed it into a headphone the LDC-X would be it. They sound amazingly detailed, high energy, use really nice ear cushions, are well built and are expensive all like a Ferarri. And just like a truck they are heavy and can be uncomfortable on long trips (extended listening). They sound sick on every genre you throw at them giving music lots of energy while still maintaining all the details for analytical listening. They are my favorite of all the Audeze so far (haven't compared to EL-8) and my number 3 favorite headphones so far. Surprisingly, they sound good running off my phone but are a on an entirely new level with a good amp and uncompressed hi-fidelity music. If you can afford it, get it! If you can't afford it, get a poster of it an put it on the wall next all your exotic car posters.

Beyerdynamic A20

This desktop headphone amp is very solidly built, it weighs nearly 4 pounds and feels just like a solid chunk of metal. It is of course not portable and needs to be connected to your AC plug. It is just plain terrific in driving medium-impedance headphones such as my 250 Ohm Beyerdynamic DT1770 for which it makes a natural partner. I am using it with a Chord Mojo DAC set to fixed line level out at 3 volts and this configuration offers a highly immersive listening experience with a very dynamic and clearly delineated soundstage as it seems to tighten up the sound while preserving micro- and macro-dynamics. The improvement over driving the headphones directly by the DAC is real and obvious but not strictly necessary, think of it as icing on the cake – for perfectionists only. A power rating of only 170mW (when some other brands desktop amps offer a full watt or two) may seem week on paper but it absolutely plays loud enough and with sufficient authority -- certainly more than the typical USB or battery-driven dac/amp can provide. Highly recommended.

Rock Solid

This amp is rock solid. The sound it delivers is really clean and doesn't change the characteristics of the source much. It slightly takes the edge of highs and adds just a touch more bass. It isn't the most powerful amp for use with headphones like Audeze LCD-3 it is enough. It's a great combo with nice DAC.

Beyerdynamic A20

This desktop headphone amp is very solidly built, it weighs nearly 4 pounds and feels just like a solid chunk of metal. It is of course not portable and needs to be connected to your AC plug. It is just plain terrific in driving medium-impedance headphones such as my 250 Ohm Beyerdynamic DT1770 for which it makes a natural partner. I am using it with a Chord Mojo DAC set to fixed line level out at 3 volts and this configuration offers a highly immersive listening experience with a very dynamic and clearly delineated soundstage as it seems to tighten up the sound while preserving micro- and macro-dynamics. The improvement over driving the headphones directly by the DAC is real and obvious but not strictly necessary, think of it as icing on the cake – for perfectionists only. A power rating of only 170mW (when some other brands desktop amps offer a full watt or two) may seem week on paper but it absolutely plays loud enough and with sufficient authority -- certainly more than the typical USB or battery-driven dac/amp can provide. Highly recommended.