Or am I wrong in the sense that "a DAC works fine or it completely doesn't"? maybe a slow cooking on top of a power amp.) maybe the machine has drifted a bit. In 20 or 25 years of use (and you don't know how the previous owner used the dac. Maybe after the change the machine should then be individually tuned? I was thinking about changing capacitors by myself, not a very difficult job, but now I don't be so sure anymore.Īnyway, I think before really comparing old dacs to new ones, on must be sure that the old one is 100% properly in spec. In the case of the DC-81L, in the bill, they say they changed the capacitors (electrolytics?) and "regulated distorsion" (translated from Japanese). But to be sure it sound like when it was new, I should send to Accuphase for a checkup and overhaul. Yes the signature of the DP-75 sound is like the one you describe. I wonder what is your take on the "resistor" approach compared to the "chip" one, in general. Here some more information about the unit This one was recently restored by Accuphase, so I am sure it is on spec and I eager so listen to the sound.
so maybe a recap is in order to be sure the unit is on spec.Īnyway, do you have some advice regarding material who stresses the typical differences between R2R and DS approach? I like them both, but I am curiousĪnd speaking of vintage R2R DAC, I now am also waiting for an even older unit, a 1988 Accuphase DC-81L, that they say is a 20bit discrete DAC. I also see on the Accuphase brochure that around each 1702 chip there are some capacitors, and they are 1994 capacitors. I also don't know witch is more true to "reality" or to the master. That was the more evident difference between the two, and honestly I cannot say that one is better than the other. With the DP-75 it is a little less focused, and it gradually cutoff.
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In this case, both with headphones (original LCD-2) and with speakers (B&W 801 and A-46 power amplifier), I've noticed that the DG-58 provided a bit more focused image, I don't know exactly how to explain the sensation, but for example an instrument is more focused on the DG-58 dac, with a "sharp" cutoff around it. The comparison was between the R2R dac on my old Accuphase DP-75 (16x PCM 1702) and the DAC section of my Accuphase DG-58 (2x ESS 9018), both connected to a C-2420 preamplifier for easy switching. I currently have and listen to some different dacs, but only once I did a comparison between vintage R2R and modern DS.
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