Check out Grace Design Headphone Amp

[Northern Oak 0]

Check out this Grace Design Headphone Amp Model 901 that includes some variations of upsampling, range selection and digital/analogue source (my guess).

 

Link to Grace Design Headphone Amp

 

[Northern Oak 0]

Corrected: Not upsampler but able to accept different digital sampling freq.

[Blues 0]

hey.. what a good looking amp!! I love the look.

[Sipher 0]

nice