I have owned a Brooklyn DAC for around 5 months now, and agree that it sounds excellent on all resolution sources. I am using the variable pre-amp output to drive my amp directly, and it does a great job. I urge anyone who owns one to try powering it with a good external DC power supply. It made a BIG improvement in clarity, detail and energy over the internal switching power supply.
Correction; The article's author is another JA: Jim Austin.
My sincere apologies to Jim Austin, I’ve no idea what his speaker reviews are like. I read John Atkinson on the measurements and somehow believed he was the article’s author, or I messed up which JA I meant, in either event, my bad.
@bigshutterbug What power supply did you end up using?
I tried 3 different power supplies on the Brooklyn....An HDPlex 100, a Keces ,and one "non-audiophile" one, which is built like a tank and quite affordable... An Astron RS-12A. I found the HDPlex and the Keces were quite "soft" sounding, and did not improve detail or imaging. I read a post on Computer Audiophile about the Brooklyn, and someone mentioned the Astron, which is American made. I picked up a used one for well under $100. It puts out 13.8 volts, but can be turned down to 12 volts by adjusting it inside. To my surprise, the Astron sounded fantastic, with a lot more clarity, energy, and detail. I had also tried various AC cords going to the Brooklyns own power supply, which just resulted in modest tonal changes to the sound.
Thank you! I found a version with V and A meters I will have to try.
One last thing, what was the DC plug you used? Do you remember? I imagine I'll have to make my own.
Yes, the Astron VS-12M is the variable voltage and amperage version of the RS 12A that I am using on my Brooklyn. I am also using a VS-12M on my Microrendu with similar results. I have a local audiophile friend who I just visited with yesterday, who tried a VS-12M on his Tortuga based LDR pre-amp, and we were both quite amazed at how good it sounded in his rig. I am using some simple, affordable ends I found on E-Bay, which, tighten down on the wires with small screws. The make it easy to experiment with different types of wire for the DC leads.....The type of wire used can also make a noticeable tonal difference. I have tried dozens of different types of wire, from ultra-pure stranded and solid core copper, to stranded and solid core silver and silver plated copper of all sorts.
@bigshutterbug Sorry I should have been more specific.
What was the external diameter of the DC jack? :)
5.5mm x 2.5mm CCTV camera DC Power Male Jack Connectors
If you search for the above description on E-Bay, you will find them. I would suggest not using a heavy gauge wire for your leads, and keep them as short as you can. After spending over $100 on various "audiophile grade" exotic wire, I found that my favorite was the cheap black wire that I pulled off a wall wart power supply....go figure!.
do the filters and the associated changes work
noticeable or kinda?
To be honest I haven't tried them out. I've moved, then I got pretty sick, so my listening location isn't ideal. I am using the default filter that ships with MQA enabled, so slow roll off I believe.
I have discovered that the MPH filter and the FR filter both sound very similar, but the SR filter does roll of the very upper highs a bit. This was confirmed by the Stereophile tests, which found the SR filter reduces the highs by 3db.
I'm trying the FR right now. It is very similar, but I think I'm getting more imaging past the speakers. Have to listen more with known tracks. :)
So it took me a bit to really get used to the FR. It seems to have an accentuated transient edge, and more imaging, but there was definitely some time in my ears adjusting to it. I would say it’s worth trying, but I don’t think the difference between minimum-phase and fast-rolloff filters is going to move the Mytek Brooklyn up or down in anyone’s list of DAC’s except in imaging. If you feel that's lacking in MPH, definitely try FR.