JP
Major Contributor
Fair progress on the printer. Held up for a week waiting on replacement parts due to numerous quality issues.
This is my SE to balanced converter, with 1 x OPA627 and 2 x ADA4898
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And it measures like this
In fact the result is better than the direct DAC-ADC loop, because those ADA4898 can drive low impedance loads (like E1DA input) better than the LME49720 of the DAC output.
That looks nice @pma. Is that your design and build?
Broskie's board?Some fun with audio
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(Tube preamp in the middle)
I have very positive experiences with John Broskie's GlassWare PCBs. Very DIY-friendly tube designs: nice documentation, clever circuits and there is plenty of space on these extra thick, high-quality PCBs.Some fun with audio
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(Tube preamp in the middle)
Yes, Broskie’s board!Broskie's board?
edit: never mid, just saw the link.
Well, having done the distortion detection tests online, im not too surprised. Lower level harmonics?More fun - tubepreamp +poweramp from this post and the distortion measurements of that combo:
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Someone might think that distortion like this would be audible, but it is not in the blind, level matched test against the direct DAC-amp path.
Well, having done the distortion detection tests online, im not too surprised. Lower level harmonics?