Pass Labs XP-20 or Audio Research Ref 3?


Who's compared the two in your system?
Please let me know. Thanks
128x128alan2
Bo1972,
The Pass Amplifier is a 250XP. It was the (Prototype Version) for the X250.5 that I have just traded in last week. I am waiting for a one year old X350.5
I owned the XP-20 for over 2 years of time. It was a good pre amp, not a stunning pre amp.
I am addicted to music since I was 6. I spend all my money on music and audio till I was 19 years old. I work since 1998 in the world of sound and vision. I have done thousends of tests. This is not my work or hobby. This is a part of who I am as a person. It is a second nature. I can see 3-4 steps further than other people in this business. Music is my biggest hobby. I am a perfectionist and things need to be the best. Always looking for better. Testing in audio is a thing I love. I know a lot more information about every single thing you use in audio. I can give every single tool ( source, cable, speaker, amp etc) the properties/qualities they own. So I use the properties to create what I call Total Sound. This is the blueprint for the absolute sound. Since the beginning of 2013 I know I have a photographic memory in sound. In 10 seconds I know ( with my music) what a system has and what is missing. I can write on a paper where all the instruments and volices are standing of a recoding. Also how deep a stage is. After changing a part ( cable, source, amp) I know exactely the difference between the 2 demos. This way I can create much faster a higher level.

I developed my own way of measurment with Audyssey Pro. I measure at different places and hights. I also use the parameters in a different way Audysssey says. At the end the difference in endresults are huge. So much more dynamics, resolution, speed and sharpness in individual focus.

A few people in this business has been to my house. A person who is a surround specialist for a long time said: you have gold in your hands. You can put the whole highend world upside down.

I have proven that I can beat pre amps till about 15000 dollar with ease with my Onkyo PR-SC5509 and my way of Audyssey Pro.

Without my way of measurment the Onkyo is not that special.

How does the XP-20 compare to the Onkyo PR-SC5509 and my measurement of Audyssey Pro? I talk about differences only with Pass Labs poweramps ( I owned: XA30.5, XA60.5, XA100.5 and X250.5)

More drive; The needle starts to move later when I would use the same dynamics with the XP-20.

Sharpness of individual focus is superior to the XP-20.
Voices and instruments are more loose from eachother. And clearer to hear. There is more space and blacks around them.

Articulation of voices is superior with my measurment. You can hear people breath, word endings and lips movement.

The other thing that I have created with this measurement is what I call Stealth integration ( with a subwoofer). I never heard (people in this business say the same)this level of integration. Even the energy and drive of the low freq is where it is recorded. Even if the sub stands 3 metres on the other side. People went crazy whenn they heard it. This is why I want to give demos so many people can hear it.

BECAUSE HEARING IS BELIEVING. This is how I work. I Always create a higher level in endresult compared to any person who works in this business. I love competition and I always want to win. When you want to beat me show me you can create a higher level in endresults.

Thee stage is wider and deeper compared to the XP-20. Instruments and voices are more free in front of you.

There is much more authorithy compared to the XP-20. I can play as loud as I want to. I can play from 16 hz as deep and loud as I want. Without roomcorrection it becomes a mess. With the XP-20 you never can play this loud or deep without acoustic problems. When you do not have this acoustic problems anymore you hear a lot more information of every recording. This is also a new way of freedom in music I never experienced. I see many people with addapted rooms. I have visited many of these companies as well. I still have to laugh, because I am already so much further in a higher endresult. Time goes one, and you Always need to want to improve the overwhole sound.