Pass Labs Int-25 review in Stereophile

The input selection is just plain old relays and the volume control is the Maxim DS-1882. This part was also used in the previous generation of integrated amps and has been revealed before in the press.
A nice part for $2.50 those IC designers do a fine job and can do things that would be difficult to do outside a chunk of silicon.
 
The input selection is just plain old relays and the volume control is the Maxim DS-1882. This part was also used in the previous generation of integrated amps and has been revealed before in the press.
A nice part for $2.50 those IC designers do a fine job and can do things that would be difficult to do outside a chunk of silicon.

Awesome.
Thanks Wayne.
 
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:clown:

Awesome series. Wish they released new season more quickly.
 
Pass Labs INT-25 integrated amplifier Measurements | Stereophile.com

120PL25fig6.jpg


Fig.6 Pass Labs INT-25, THD+N (%) vs frequency at 8.95V into: 8 ohms (left channel blue, right channel red), 4 ohms (left cyan, right magenta), and 2 ohms (gray).


There is much to admire in the Pass Labs INT-25's measured performance. However, its intolerance in the treble for loads of 4 ohms and below means it will work best with loudspeakers whose impedance doesn't drop below 8 ohms at high frequencies.—John Atkinson
 
Let's step back for a minute - it goes from 'none that can be detected by living creatures' to 'bats beware'?

He could have just said it goes to 0.8% instead of saying it 'rises dramatically' ... like Godzilla rising out of the ocean ....

Yes, I am biased as well. :cheers:

Happily so :cheers:
 
Pass Laboratories INT-60 integrated amplifier Measurements | Stereophile.com

John Atkinson's own words on the INT-60

Note that with the limited amount of negative feedback used, the distortion rises in the upper octaves—although, as high-level content above 10kHz is very rare in music, this decreasing linearity shouldn't affect sound quality.


Also consider the fact that a 5th order harmonic of 10kHz is 50kHz.
I know with my ears I am not going to hear it.
In addition to that most tweeters aren’t even capable of 50kHz.
 
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How can this be, Stereophile distortion measurements

left XA25 right INT-25

Incredible difference, what went where wrong?

😕
 

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