These are two different amps. The GS-X is going to give you the utmost in transparency. While the βeta-22 will add just a little of it's own color. Now going off my old GS-1. I had it and the βeta-22 at the same time. For me. The βeta-22 beat the GS-1 in the bass department.
Mind you my βeta-22 is a 4 channel fully balanced design. The GS-1 beat the βeta-22 in just about everything El's "technically" The βeta-22 beat the GS-1 "IMHO" in enjoyment or should I say it was more fun to listen to. This is with the HUD800s.
With the LCD-2.2s I enjoyed these with the GS-1 the most. That's because that headphone is already colored and the GS-1 just brought it to life. It sounded good on the βeta-22 as well, but just a little to bassy for me. The two amps compliment each other to the fullest. I will have both.
Thank you for sharing your impressions.
If I understand you correctly, the GS-X is more neutral, transparent and detailed than the Beta 22.
I have always wondered when evaluating amps of this caliber, how one tells when one is "colored" or something is truly "neutral"? I think of "colored" when I hear it mentioned as being different from my perception of "true life" or a non-flat response. I am sure that both amps ruler flat by measurement so it is unlikely a peak or trough in their response. Perhaps the GS-X sounds "cooler" than the Beta 22 which you (and others) associate with "neutral" or "true to life"? Sometimes when bass response is less attenuated, I believe that something can come off as "warmer" given human sensitivity to low frequencies?
Are there differences in output power, voltage, power bandwidth or some other electrical attribute between these two amps at the impedance that we are talking about that might explain "warmth"? Others have described it as "warm", "fun" and "euphonic" so your experience is in the majority. I am just trying to understand the perception of "warmth" in a ruler flat, balanced SS amp?
It is also interesting why you found one more enjoyable than the other as well. I have had an audition with the LCD-2 and my impression was not that they were colored (just my take, could be wrong). I would descibe them as quite neutral, but I found their sound stage to be quite small (but precise), some details in the music not as revealed as with the HD800s and they were very uncomfortable to wear on my head. The HD800s I found to be more detailed, tremendous sound stage, were very comfortable. But I would say that they were colored in that there was bass attenuation compared to the LCD-2 and some sibilance in the high frequencies on some songs.