STAX PHANTASMIC 32 BIT
I have the power amps volume pots set to about 10 o'clock and control the main volume from a 32 bit DAC, It does sound exceptionally good, has a sort of open speaker like sound, with a very natural tone to vocals and instruments. I have a SRD-7Mk2 which has both a Pro and older Standard outputs, I've only ever used the Pro output with my SR-L700 ear speakers, connected to a 27KG Crown Studio Reference II, power amp, it is complete overkill for driving the L700's. I took a quick look inside in the process of verifying the polarity of the input voltage: Still, I take this as even the max volume here, I found the overall loudness to be lacking. It is interesting that loudness which is a human perception requires tons more power as that 4 dB advantage was not that apparent. Drive it more and sound would just fall apart.įor comparison I then switched to SRM-313 and I could get a bit more volume before it too started to crackle. Turn up the volume past 12:00 o'clock though and peaks would get static. At lower volumes the sound was nice and I could not detect an issue. I drove the Xh using my RME ADI-2 DAC V2 as the source at 0 dB. Someone can do the math but seems consistent with me getting more output from the latter. Specs show the max output of the SRM-Xh as 280 volts and the SRM-311 at 350 volts. BTW, I could easily hear the clipping with the tone completely changing at that point so what you see, is what you get subjectively. At lower levels though as we saw in our previous test, the SRM-Xh does product less distortion.
We can clearly see that the SRM-313 pulls ahead of SRM-Xh delivering about 4 dB more acoustic power.
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