The Copland CSA is a well-equipped and impressively capable amplifier. Copland is one of the unsung talents of the high-end hi-fi industry. Despite being in business for almost 40 years, the company has rarely grabbed the limelight.

But that has more to do with the way the brand operates than the quality of its products. This small Danish company only makes a limited range of electronics often valve based and goes about its business in an understated manner. Its products' life cycles tend to be fairly long, and new introductions are rare and done without much fanfare. As far as features go, this integrated could be all the amplifier most music fans will ever need.

At its core is a hybrid electronic design, which uses a single double triode valve in the line stage feeding a high power MOSFET power amplifier section.

The result is a solid W per channel into an 8ohm load that rises to a healthy W as impedance halves. Those figures suggest that the CSA will be able to drive most speakers to serious levels in all but the largest of rooms. For vinyl fans, a phono stage suitable for moving magnet or high output moving coil cartridges sits alongside single-ended three and balanced XLR one line-level inputs.

Unusually for an amplifier of this type, Bluetooth in aptX HD form is on the menu. Add a 6. It makes class leaders such as the Rega Aethos and Naim Supernait 3 sound a little uneven in comparison. It has a spacious presentation and renders an expansive soundstage. The presentation remains stable, too, even when the piece becomes demanding or volume levels rise. This amplifier is all about clarity. It excels in the subtleties and displays a level of finesse and sonic sophistication that puts us in mind of far pricier alternatives.

The presentation is nice and open, even in an album as densely produced as this. If you value rhythmic coherence and dynamic punch above all else, its rivals move ahead. Our view of the amplifier stays positive whether we use the digital or analogue inputs. The phono stage is good too. Overall, the CSA offers an excellent alternative to the established class leaders and has an equally convincing, but different, blend of attributes. Read our guide to the best stereo amplifiers.

Read our Rega Aethos review. What Hi-Fi? Our comprehensive tests help you buy the very best for your money, with our advice sections giving you step-by-step information on how to get even more from your music and movies.

Everything is tested by our dedicated team of in-house reviewers in our custom-built test rooms in London and Bath. Our coveted five-star rating and Awards are recognised all over the world as the ultimate seal of approval, so you can buy with absolute confidence. Read more about how we test. Home Reviews. Cons - No display - Needs care with headphone matching.

Amazon Music HD - Network Audio - PS Audio - How can you listen to MQA?

They seem to have a track ultra HD playlist for Classical, Jazz etc. Even with the Air protocol there was some cracking on the first track, but others were fine. Tells you bitrates. No album booklets, which is bad news for classical. For a HD mobile phone option with good headphones, it looks like a very good option. I suspect it will become popular with Prime account holders.

Screenshot at Amazon Music is hosted on my Bluesound Powernode 2i and it took 30 seconds this time to be playing HD through it. I have run it through Devialet Expert Pro. This is how most people listen to music these days, not audiophiles with static systems. USB connection. Does anyone have any listening impressions yet on their system?

So we are open to integrate their service into Audirvana, but that is the only thing we can say so far. My guess is Amazon is more interested in selling mass quantities of their HD music subscription services than they are creating hardware exclusivity. We can only wait and see…. And down the road they may be but it will be on their terms. They now hold all the cards not the aftermarket companies like Roon. Great stuff out there.

For the longest time, I used Tidal and Spotify both because there were things missing from each library. So far Amazon has only opened its closed API to hardware vendors whose physical products it can sell. I found out that Amazon Music HD can have mis-labelled tags. It can labelled in the UltraHD category but in fact it is not. All this is after dealing with their incompetent tech support personnel for about 3 months!!!

And they can not tell me when the tags can be corrected. Sounds like a shady business practice. My experience with Amazon HD before I discontinued was that most of the time it would stream at the advertised rate but not always, and it was never predictable as to when it would or not.

Another thing that lead me to leaving was a lack of album integrity - lots of albums show up as a mix of HD and UltraHD tracks when the album was never been released as UltraHD - it appears they mix tracks from other releases e. Many thanks. Thank you for your work Damien.

I just pay for Amazon Umlimited. Hope this makes sense.