Step-up from Node2i for native AmazonHD streaming?

Starting a new thread, because I've realized Node2i doesn't have necessary coax input (for connection of CD player) - not enough inputs.

Apparently either Amazon is being selective with the UltraHD API (who gets the right to use it), or mfg's won't pay the licencing fee, or some other API-related issue. I have a suspicion it will become more widely universal as time goes by. Sound United companies (Marantz/Denon/others), Bluesound/NAD, and many others were able to implement spontaneously on (some very old) pre-existing hardware with firmware updates, so the hold-up seems to be Amazon API rights availability.

@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.

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.

I haven't tried Qobuz. I was using Tidal HQ for about 6mos when A-UHD launched, and switched. I don't notice an SQ difference between the two. A-UHD plays nice with all our Echo devices, NAD (w/BluOS2i) and Denon AVR (also Echo-controlled). With the family plan, we frequently have different music playing in different parts of the house - all works without any problems. Actually, the only problem occurs when Alexa (for unknown reasons) occasionally tries to access discontinued Tidal subscription, "Can't play... on Tidal at this time, login to authorize...". I think this is a remnant from the expired subscription. Asking again usually solves the problem, and it plays from Amazon.

@djones yes, I’ve seen the Amazon list before, and figured my best bet was Sound United group. Denon doesn’t seem to have anything (didn’t look through the AVRs), Marantz has so many models - I looked through a few categories and didn’t find anything, all the others would take forever ruling each brand out one-by-one.

I was hoping the community would know gear capabilities better than I - that might not be true. I may have to buckle-down and create a spreadsheet for this search.

Questioning the choice of Topping E30 DACs opens other options.

A matched pair of stereo DACs is required. They need DAC-only function, but could also have pre-amp features and headphone amp; however, those extra features will not be used. I haven't purchased the DACs yet.

Topping nay-sayers: A pair of E30's cost $260 (new and not on sale). I'm not opposed to buying used. What other pair of DACs would you recommend for $300/pair and where do I buy them?

All other DAC/system budget pro's... I'm not opposed to spending more, for better performance if value is still there. What is the next least expensive (even used) pair of consumer-grade (plug it in and it works) DACs that are UNDENIABLY better sounding OR measure better than E30, make/model/version, and where can they be purchased?

@djones51 yes that is likely, and the STR.
the STR doesn't have coax out - maybe the AVR does.

If there is no AmazonHD-capable streamer/preamp with coax in and coax out, then I'll have to get seperate components. Node2i (streamer) and seperate digital+analog preamp. What preamps have coax in (and other typical inputs including decent MM phono stage) and control the volume of coax out?