"Eeyore"
wrote
in message
Andy Evans wrote:

Just wondering what success any of you have had building
DAC kits. there are some cheap non oversampling boards
on ebay these days like the DAC-AH

You mean the loony fringe now want to reintroduce antique
converters so as to accurately recreate the 'grit' they
used to listen to ?

Hmm, the TDA1541 datasheet at hand is dated 11/1985. Antique converers,
indeed.

The TDA1541 appears to be a DAC chip in the narrowest sense, lacking most if
not all of the refinements we find in modern parts. The most notable
refinement that seems to be lacking is the reconstruction filter. The
consequences omitting a reconstruction filter from the design include
massive amounts of ultrasonic hash.

http://pc.watch.impress.co.jp/docs/2.../nishikawa.htm seems to
describe a TDA 1541A-based DAC with a very poorly-designed-to-non-existent
reconstruction filter.