Maximum DIY contents in the whole rig and never sounded this good….

[yogibear]

very nice DAC board. do you need lot of gain for this DAC? instead you use tube in the output stage.

Nope. A tube stage to see what it brings. The ensemble could pair well with an SS amp.

 

[yogibear]

I let the dac breaking for a few days and the sound evolved. Tonality is the best I ever heard in my setup regardless of the amplifier used. The dac signal output was beyond my expectations and any amplifier I tried would mate well with excellent gain and drive.

A clip with dac driving a 9 wpc, IT coupled EL84 Push Pull Amplifier: (15% volume level driving 88dB bookshelf speakers)

 

[yogibear]

8th build of the 2025. (Three R2R DAC, one phono and four tube). EL34 SE 20 watts per channel. No feedback. On board meters which help bias unmatched tubes, are mirror to tube and amp health and track that live while the amp plays. Dead silent operation. The arduous task of removing the film from chassis remains.

 

[reignofchaos]

Completed and fired the transformer output coupled DAC today. The digital section is chipless R2R, NOS, no DSP, dual resistor array dedicated to each channel. OPT are very special, Tamura.

Very distinct tonality and presentation with big low end extension. Excellent signal output too. Drives my 300B amps effortlessly.

Next is adding a tube gain stage to it.

View attachment 91095

What is the output impedance of this dac board? Seems like the output is coming straight from the ladder without any form of buffering.

 

[rwnano]

In diy anyone who is good with setting up wireless networks in the house and can give me some feedback? Thank you

 

[yogibear]

What is the output impedance of this dac board? Seems like the output is coming straight from the ladder without any form of buffering.

It uses 1:1 / 600 ohms : 600 ohms OPTs. Yes, the dac execution is very neat and straight forward.