i briefly looked into dac/amp combos but decided to stick with a separate unit configuration, mainly because of the 1000+ CDs that i own.
these are the products i considered (sorted low to high in terms of price), although the esoteric and dcs were definitely outside my budget.
- Schiit Ragnarok 'Fully Loaded' ($1,799)
- SPL Phonitor XE Desktop Headphone Amplifier with DAC ($2,999)
- Naim Uniti Atom Headphone Edition ($3,290)
- Violectric V590 Headphone Amp / DAC 'Pro Model' ($4,099)
- Bricasti Design M3h DAC/Amp ($6,000)
- Esoteric N-05XD ($11,000)
- dCS Bartok wtith Headphone Amplifier ($14,500)