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Topping PA5 II Stereo Amplifier Review
- Thread starter amirm
- Start date
600 000 V/s = 0.6 V/μs. But that is assuming 20 kHz, the topping goes higher.
It does faster anyway it goes max positive to max negative AND BACK AGAIN at 20kHz. So first double that slew rate. Plus a significant part of that time it is going much slower. You need to be looking at the speed at the zero crossing point When the slope of the sinewave is steepest.
And at that point the slope (derivative of the sine function) is A*ω , so actually you need to multiply by 2π.
So the Pa5 can put out 29V peak (A is 29, 53W unclipped into 8Ohm)
so slope is 29x2xpix40,000 = 7.3V/us (Pa 5 is more or less flat to 40kHz - and actually goes up to 60 or 70kHz, so the real figure will be still higher.)
Someone please correct me if I've messed up there at all.
Yorkshire Mouth
Major Contributor
Please excuse me, I’ve never used a 12v trigger before.
What size/type cable do I need for this amp?
Many thanks.
What size/type cable do I need for this amp?
Many thanks.
3.5 aux cable will do (either mono or stereo) but you may want to check the other end too. For example, wiim uses 2.5.
Yorkshire Mouth
Major Contributor
That’s exactly what I’m looking at.
Will any 3.5mm to 2.5mm cables? I’m seeing lot for sale on Amazon UK described as audio leads for headphones, etc.
Will they be okay?
That should do it (mine is also a stereo audio cable)
Pretty much any cable with the right size plugs will do - it is DC at very low current, so even
a few strands of copper will do...
Yorkshire Mouth
Major Contributor
A quick heads up.
The vanilla version has fallen in price at Amazon UK from £250 to £220, whilst the Plus version has fallen from £330 to £290.
The vanilla version has fallen in price at Amazon UK from £250 to £220, whilst the Plus version has fallen from £330 to £290.
It seemed to me, but I was disassembling my own and looked, the manufacturer did a good job. he did work on the errors, he separated some buffers from the main preamp circuit!
Guddu
Major Contributor
- Joined
- Feb 10, 2020
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There haven’t been many reports.
TheLastGerman
Member
My two cents: I have two PA5 IIs in daily use for a year and a year and a half respectively, and they work flawlessly ever since.
I've had mine for nearly a year and have had it on without turning it off now for 7 months with no issues.
Yorkshire Mouth
Major Contributor
Wow! Given you asked that question here before ordering, what are the chances of that!
Actually hope that it's just a very weird coincidence
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