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In Reply to: RE: No need to argue posted by Tre' on May 08, 2017 at 07:42:32
The Tascam uses 70s vintage NE 5532 op amps in its output stage. Not bad sounding as the Delta sound card in my PC also uses them, but completely transparent?
I too, find it difficult to imagine they have no effect on the audible results. :)
Follow Ups:
And there has been for many years. A reliable workhorse, sure, but one can do better.
I have an Oppo 103 which also uses the venerable 5532 while the 105 uses the LM4562 for single ended output and LME49724 for balanced.
I'm sure the DA-3000 provides great value, but when you look inside you see other areas that exhibit cost control such as the power supply and coupling caps.
Most notably my now deceased, and sadly missed JVC-XL-Z1050TN CD player. It's been a long time, and I can't recall what op-amps I used in place of the 5532s, but I do remember the improvement.
Just about anything (unless it's already an all-out assault on "The state of the art") can be improved on, sometimes for surprisingly little cost.
Your point regarding the power supply is well taken. Improvements there have always gained me my most significant improvements, most notably, replacing a 7818 regulator inside my Graham Slee Reflex with a Belleson regulator.
I'm unsure if I have the nads to attempt removal of the tiny SOIC op amps in the Tascam. But the unit has a bipolar PS of 7812/7912 three pin regulators. I'll try Belleson regs in those positions.
My opinion is that the ADC in the Tascam unit is special, but that its DAC is just average. You need a better DSD DAC to "hear" these recordings.
The only potentially superior alternatives that I can find for recording to DSD are the Merging Technologies Hapi($5.5K) and the Playback Designs Pinot($10K+). The Tascam is a bargain. Anyone with a DSD DAC who is contemplating recording their vinyl should feel free to mail me an SD card that I will populate with sample tracks and return.
I don't blame you. I wouldn't mess with those either. Even many expert solderers don't like to fool with surface mount devices.
As for the Belleson regulators, I don't think you'll be sorry. As I recently posted on Tweakers, it made a greater improvement than any wire (interconnect, speaker, power cord etc.) change I've ever tried.
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Have Fun and Enjoy the Music
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