No problem!
I’ll leave it to those better informed than me, but one thing to remember is that efficiency can, and does, vary fairly significantly between class-A designs.
Okay, then I'm wrong but, sorry.
But I don't get it why they
a.) called Int 60 (the Int 30 has 30 watts class A too, the Int 25 has 25 watts class A as far as I know)
b.) How could the idle be doubled if the class A part is the same?
The Int 30 was measured by Stereo in Germany: 90 watts dynamic headroom, idle 134 watt, the Int 60 was measured by Stereoplay Germany: 88 watts dynamic headroom, idle 240 watt.
Please can you or someone else explain me how that could be.
For comparison:
Accuphase E 560: 30 watt class A, idle 157 watt
Thank you, that is very helpful but still I don't understand why the Int 30 and the Int 60 have such a big difference in idle (134 watt vs. 240 watt).
Both have 30 watt class A part both have around 90 watt dynamic power @ 8 ohm. Even the E560 which has 30 watt class A too @ 8 Ohm and has 60 watt dynamic power @ 8 ohm differs not that much from the Int 30 (157 watt vs. 134 watt).
Is there such a thing as a class A single ended solid state amplifier ?
would this be something like what you describe jez?
https://pinkfishmedia.net/forum/threads/class-a-power-amplifier-by-the-wonf-ewa.251576/
Sorry I don't know the right term. Is it peak? impulse? or burst? power? I don't know to translate it from German into English. The term dynamic power isn't from Pass or any manufacturer. The specs aren't from a the manufacturer they were measured by Stereoplay (Int 60) and Stereo magazine (Int 30).The maths doesn't lie but marketing people.... "dynamic power"? What the hell is that supposed to mean?
Sorry I don't know the right term. Is it peak? impulse? or burst? power? I don't know to translate it from German into English. The term dynamic power isn't from Pass or any manufacturer. The specs aren't from a the manufacturer they were measured by Stereoplay and Stereo magazine.
@Arkless Electronics But even if we ignore burst, peak, whatever.
Int 60: Sinus 74 watt @ 8 ohm @ 1kHz with k=1%, idle 240 watt
Int 30: Sinus 90 watt @ 8 ohm @ 1kHz with k=1%, idle 134 watt
How could that be if both amps work with 30 watt class A? Sorry if I'm too stupid.
Jez, the INT-30 was the INT-60’s predecessor (I believe).
no both separate models. The int 25 is the int 30 replacementJez, the INT-30 was the INT-60’s predecessor (I believe).