Hi,
I owned NC400 and heard Purifi at a friends place
I also owned NC502MP and Icepower 1200AS2
Tried several TPA3255, dual mono, RCA, XLR and bypassed opamps
The differences are very small
and difficult or even impossible to determine in a proper AB blind test
Hypex,Icepower and TPA3255 they all sound good
I prefer drMordor TPA3255 with PFFB
Lets see what Gan amps will bring, looking forward
😀
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This confirms that DrMordor modules are great and everyone seems to have the same opinion. The new one with integradted LLC PSU is one of my best Class D amp.
Thanks to DrMordor who made a very very good job ! 😉
Show spectrum 3-9kHz?
I have a flat spectrum in full frequency 20-20
I added an integrator to the loopgain and smoothed out the peaks in the spectrum.
I have a flat spectrum in full frequency 20-20
I added an integrator to the loopgain and smoothed out the peaks in the spectrum.
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I am attaching the 1Khz 10W , 8R taken with AP (unweighted)
THD at 0.00012, THD+N 20 to 20Khz at 0.001 ( my mistake)
This result is taken with full buffer in front of inputs.
THD at 0.00012, THD+N 20 to 20Khz at 0.001 ( my mistake)
This result is taken with full buffer in front of inputs.
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Excellent measurements)))
I will repeat mine with a finer sound card setting
But even so I'm interested in your spectrum 3-9kHz
I will repeat mine with a finer sound card setting
But even so I'm interested in your spectrum 3-9kHz
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Yes its very good, I will get you the 6.67Khz FFT as well.
Meanwhile , I do not consider the THD+N as the only factor in SQ. In my personal opinion even noise on the output factors and I always try to minimize . (thats not something that most class d designers think about )
I am attaching the SA reading of the output .
And yes the inductor...for me that's very important in SQ. Simply I have designed my own with very low magnetic core.
I do not think that most of TPA3255 are done correctly including the one from other DR.
A well designed TPA3255 will be very close (or equal) to Purifi amps and equal (or better) than any GanFet I seen on the market. with the advantage to have a lot of protection
Yours looks the best in the field.
Meanwhile , I do not consider the THD+N as the only factor in SQ. In my personal opinion even noise on the output factors and I always try to minimize . (thats not something that most class d designers think about )
I am attaching the SA reading of the output .
And yes the inductor...for me that's very important in SQ. Simply I have designed my own with very low magnetic core.
I do not think that most of TPA3255 are done correctly including the one from other DR.
A well designed TPA3255 will be very close (or equal) to Purifi amps and equal (or better) than any GanFet I seen on the market. with the advantage to have a lot of protection
Yours looks the best in the field.
Hi amigos,
new TPA3255 by BRZ with USB input :
and another one with BT QCC5125 with LDAC
new TPA3255 by BRZ with USB input :
and another one with BT QCC5125 with LDAC
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The last version 3e audio is very good with opa 1656,thanks Dany for the recommandation...sound very good and cheap for this level!!!
