Step-up from Node2i for native AmazonHD streaming?

Thank you for your replies. Goal is:

Streamer/pre-amp (coax-out) > miniDSP nanoDIGI (2x coax-out) > 2x Topping E30 DACs (RCA-out) > ATI multi-ch amp > LXmini speakers
The point of this is to

1. Eliminate multiple AD/DA conversions as possible (system above has only one DA conversion
2. Keep signal in digital domain as long as possible (for digital sources)
3. Improve DAC SQ (currently, the final DAC is built-in on miniDSP4x10HD), which I have been told is inferior (muddy sound)

Other sources that need to input to streamer/pre are:

• Phono with the following output capabilities: phono-level RCA, line-level RCA, USB
• Multi-disc player: HDMI-out needs to connect to TV, coax is only remaining output

Streamer needs to provide pre-amp functions. However, it doesn't need to be only a streamer - it could be a streamer/integrated or any other configuration of integrated units... as long as it has coax out. The only streamer/integrated I can find that meets all requirements is NAD M32 w/BluOS MDC module.

However, I have to believe there are other AmazonHD-capable device that will also have coax in and out, act as pre-amp for other inputs, and control volume. I just don't know what they are.

I currently have NAD C388 with BluOS2i, and it has everything except coax output. So, I've been using its RCA out to input of miniDSP4x10HD, to ATI multi-ch amp. Although this actually sounds great, I'm looking for improvement (aren't we all), especially in the AD/DA conversions and DAC performance.

Like I already mentioned, I’m sure there’s something that meets your needs, but Amazon HD is going to be your Achilles Heal. Any particular reason you’re tied to Amazon? I’m sure the NAD M30 is a nice piece of kit, but using a $4k streamer to feed a $100 DAC doesn’t make a whole lot of sense either. While price certainly isn’t the final arbiter of sound quality, it does have some bearing. A system is only as good as its weakest link and I’ve always subscribed to the belief that everything in your audio chain should all be from the same general quality tier. YMMV.

Look on Amazon to see what companies they have partnered with. McIntosh makes a streamer with Amazon but it's not really a preamp. So far NAD and Bluesound have the best integration. Others have AV's that work like Marantz, Denon, Anthem. 

@crn3371 I like AmazonUHD better than Tidal MQA - that's why Amazon. Topping E30's offer the features needed, and perform better than most, they are a great value, and definitely better than miniDSP 4x10HD (built-in DAC), which is the purpose of this endeavour.

Have you tried Qobuz? If you do some searching you’ll find Qobuz hi res is generally preferred over Tidal. I don’t doubt that the E30’s are a great value, Topping is a brand that punches above its weight class. I was only commenting on the logic of pairing a low cost budget DAC with something along the lines of the M30.