Think premier high-end Brit steamer/DAC performer in a small footprint  : CYRUS AUDIO 

3,46” X 8.66” X 15.16” ( H X W X D )

$USD 4000

https://cyrusaudio.com/products/40-st/

https://cyrusaudio.com/wp-content/uploads/2024/08/40-ST-PIG-V1.0-2Oct24.pdf
 

reviews

https://www.whathifi.com/reviews/cyrus-40-st

https://www.avforums.com/reviews/cyrus-40-st-network-streamer-review.22552/

https://bestofhighend.com/cyrus-40-st-streaming-dac/

High-end small footprint Option #2

https://pro-jectusa.com/product/pre-box-rs2-digital/

PRO-JECT Pre Box RS2 Digital Preamp w/ DAC & Headphone Amp

$2,999.00

2.83” X 8.74” X 8.11” 

Features

• Dual mono DACs: 2x ESS9038Q2M
• High Quality optionally selectable upsampling of PCM and/or MQA content with proprietary filtering
• Advanced re-clocking powered by new XMOS chip with Mulit-Core RISC architecture
• 9 digital inputs: i²S HDMI, AES/EBU, Toslink, S/PDIF coax, Bluetooth v4.0
• Analog: pre-out XLR/RCA/headphone, RCA input
• Fully balanced dual mono design
• Output stage switchable between 6922 tube & solid state
• Ultra-linear and ultra low noise
• New high-quality display with responsive and fast UI design
• High quality full aluminium remote control included
• Available in silver and black
• Handmade in Europe ( Austria) 

REVIEW

https://www.hifi.blog/pro-ject-pre-box-rs2-digital-high-end-preamplifier-with-dac-and-headphone-amplifier/

WOW, so glad I posted this! Love the responses so far - EXACTLY what I'm looking for! GREAT looking stuff!

Thanks, guys for taking the time to post. I'll be looking at these pieces more in depth later on today.

Every time this question gets asked. 
https://innuos.com/stream1/
 

This Bel Canto Stream 2 might fit the bill and is only $1995 new.  Here’s an excerpt from a Twittering Machines review…

Just for fun, I substituted the more costly review Prima Luna EVO 300 Hybrid Tube Integrated Amplifier (more info) for the C6i to see how well the e.One Stream2 plays with others. Cuing up the digital version of Careful answered that question—swimmingly! The Prima Luna is lush, rich, and powerful and this system—Bel Canto e.One Stream/Prima Luna EVO 300 /DeVore O/96—delivered even more impactful yet delicate and detailed sound. Sometimes more is more. As a streaming DAC, the Bel Canto e.One Stream2 tells a very convincing story, and in this system it offered a smooth, punchy and rich sound. For its asking price of $1995, I think it represents great value and great performance through its analog outputs. If you’re on the hunt for a streaming DAC, I recommend adding the e.One Stream2 to your short list.

https://twitteringmachines.com/review-bel-canto-e-one-c6i-dac-integrated-amplifier-e-one-stream2-network-bridge/