which is the best coupling transformer for a balanced 1 bit dac chip?
i want to remove all op amps from this player and the da converter chip is a mash 1 bit da converter mn6471m
with an impressive sound. but i am looking to install a transformer
and adapt a tubed section tha i designed.
transformer should do balanced in /unbalanced out to drive
a 12 au7 mullard tube.
RaleighAudio uses the Lundahl LL1674
I've also seen the LL1527 being used on the internet.
thank you very much for your reply!
have you tried that design?
have you tried sowter & lundhal?
do i have to use some kind of low pass filter?
i am trying this design inside of a teac esoteric vrds10
the transport that wadia uses on their top priced transports.
i am having good results but i am looking for the optimal biaset
for the mullard 12au7.
I have the RAKK dac by RaleighAudio. The passive version. Works and sounds great. I don't think you have to use any filter because the transformer is in itself a filter. Lows and highs are filtered out by the tranformer...
I have not tried any other because the RAKK comes with the LL1674..I might try the LL1527XL just for fun one day...(but I can't right now because someone is evealuating my RAKK dac)
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