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LosNir 22nd September 2011 02:00 PM

Analog I/V Stage for TDA1541
Hi all,
I'm currently in the process of building a TDA1541A DAC using the famous designs from raindrop_hui.

However I haven't yet decided which SRPP Analog I/V Stage to go with, my 2 options are:

A. AnalogMetric SRPP Analog Stage (6SN7)
6SN7 SRPP Tube Pre Amplifier DIY Kit (Stereo) No Tube | eBay

B. Raindrop_hui SRPP Analog Stage (6N11 / 6922)
DAC I/V conversion module SRPP tube module | eBay

Both looks promising, AnalogMetric is using 6SN7 and looks simple enough, and raindrop_hui is using 6N11/6922 and looks pretty complex (but with high quality parts).

Any input on which one to choose? Based on the tubes used, simplicity, personal experience, schematics and overall impressions.


esangenisd 22nd September 2011 04:07 PM

I use this one as a I/V in a lampuzera 2010 dac with very good results
/120782294950?pt=Vintage_Electronics_R2&hash=item1c 1f2f8fa6

i use a 80 ohms resistor to convert I to V and then to the 6n3 stage. If u want more information including THD, conections, etc, just ask

LosNir 22nd September 2011 04:19 PM

Thanks for your reply.
Why are you using an 80 ohm resistor? As far as I know the Analog Stage should do the I/V conversion.

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