Pros: A warm romantic signature with detail in a subtle form. Doubles as a portable battery pack/charger. Has coax and optical out as a DDC
Cons: Idiosyncratic charging procedure
In the past 2 years VentureCraft has been successfully creating amps and DAC/Amp packaged components with their GD-03, Go-DAP 4.0 for iPhone 4(s), and Go-DAP X for their multi OS (iDevice, Android 4.1+, PC USB Audio).
This is VentureCraft's first DAC-only product but with a twist. Leveraging on the existing AKM AK4353 used on the Go-DAP 4.0 and Go-DAP X, they have continued with the trend of using the same DAC in their DD. The difference between this iDevice DAC with it's competitors is the multiple choices of pre-amp OpAmps offered - OP275 (base standard), OPA627AU, Muses01, and Muses02.
As with the other Go-DAPs, the DD Socket 1 comes with a 2200mAh Lithium that can be used to charge the iDevice during play, or dedicated for the DAC use. It sports a Toslink optical and coax out and therefore can be used as a digital transport. It also sports a 9Vrms output to drive the internal OpAmps.
The different OpAmp pre-amp options are rather interesting. Each OpAmp ever so slightly influences the output from the DAC prior to feeding into the amp. In this case the loaner DD1 Socket 1 I have from VentureCraft is the OPA627AU. As such I've paired it with a matching Leckerton UHA-6 MkII with a pair of OPA627AP installed.
DD Socket 1 with OPA627AU OpAmp pre-amp
Leckerton UHA-6MkII with also a OPA627AP OpAmp.
Headphone Lounge (Chris_Himself) Silver/Gold OCC cables with Rhapsodio RDB+ v1 and FitEar tips