I have a board and a cs8414 thats it, is this dac worth building ? it looks interesting. or am I better off building something else? any close up pics would also be appreciated, and any details of any mods would be good, somebody must have done a tube output stage? also are there any screen printing mistakes on the board ? as it differs slightly from the schematic, and have read somewhere ?? that this may be wrong. many thanks in advance.:)