An excellent sounding one box solution is the Sparkler Audio S503 Spiral CD player. I’ve had mine for about 6 months and love how natural it sounds. Sparkler is a company formed by the top engineer for 47 Labs. The great Phillips TDA 1543 NOS 16 bit dac chip is used. A minimalist approach that delivers the heart of the music. Check it out...
http://www.sparkler-audio.com/portfolio/S503_en.html
http://www.sparkler-audio.com/portfolio/S503_en.html