"Reference" TDA1541A DAC with I2S-BUS architecture

[noizas]

Hi Oliver,

how is going on development of DAC module V3.0 ?

I'm very interested in, because V2.3 is little bit too big for my project of balanced DAC (here are many of Salas shunts mounted already ).

Best regards
Saulius

[dvb-projekt]

Hi Saulius

the 1st V3.0 DAC is in the testing phase. I hope i am ready with all tests till end of September.

Best regards,
Oliver

[studiostevus]

I just built a lampizator output (similar to tubizator) as I had the parts lying around but never got around to building it. Comparing to the Pedja Rogic stage, my first impressions are:

- Tubes are more 'sweet' than the DDNF stage.. a bit more highs
- Indeed the DDNF stage is more punchy
- The bass of the tubes is quite boomy to my taste, there is not much detail in the bass
- The DDNF stage has more definition (must admit that my DDNF stage is powered with Salas shunts, and the tube stage with a linear psu)

I quite understand why you would like to switch between them, as both have their hightlights. Some music just sounds better with one stage than the other.

[antonioo]

EC design's 1 output (2x sk170) in to a tube preamp is what i am using, i hope
that DAC V3.0 will bring out a good solution.

[wlowes]

Originally Posted by studiostevus

I just built a lampizator output (similar to tubizator) Some music just sounds better with one stage than the other.

What tubes are you using? I find sub stantial difference between 6n2p and 6n1p for example.

[studiostevus]

I'm on 6n2p now

[wlowes]

Originally Posted by studiostevus

I'm on 6n2p now

Nice choice. Of course the coupling caps are a key part. I am running Obligato PIO 2u. Work well. Russian KBG are a step up. I bypassed them with .1u Russian Tefon, and the HF opened up a new window. Very cost effective.

I suspect the quality of R1 and R2 are equally important, but I have yet to test. I did add a cathod bypass cap to R1, and like the effect. just put a 150u 16v Oscon SEP on the resistor. It added more grunt and texture to the lower end.

B+ power quality counts but not as much as cap choice. adding good transformer and a choke cleared away a little haze.

[studiostevus]

I am using

B+ = 190v
Rk= 200ohm kiwame
Riv= 50 ohm shinkoh
Output caps = obbligato gold 2.2uf

Should be fine, and it sounds fine. I just like the discrete stage a bit better overall (but on some music the tubes).

[wlowes]

Originally Posted by studiostevus

I am using

B+ = 190v
Rk= 200ohm kiwame
Riv= 50 ohm shinkoh
Output caps = obbligato gold 2.2uf

Should be fine, and it sounds fine.

Almost identical to my setup. I have Riv at 90 ohms. Lampizator claims its a bit more laid back at 50. I have not experimented so no idea.

[neda]

Hi Oliver,

I fired up my DAC for the first time last night, and everything seemed to work fairly well. I'm using a CD player with digital out as a transport. I'm using the Twisted Pear SPDIF converter through your high speed buffer.
Today I turned it on, and I'm getting music out of the the left channel only.
When I turned up the regulator supplying them to 5.5v I got sound out of both channels but it was very distorted.

Any ideas?

Ned