This is my first impression thoughts on my new ST-120.
I got this amp as a "gift" to my self with my income tax refund and all of my hard work last year.
I had Bob build this for me with all of the upgrades including the chassis.
Well, after a good warm up and a bias adjustment, this amp is IMHO pure ear sex for lack of a better term. I know it will get even better with some tube run in time.
As of now, I have the amp running a set of Infinity Kappa 6.1's that are 89db 1w/1m. While the 6.1's are not as power hungry as the older Kappa's, they still like power and a lot of it. So far, this amp delivers very, very well and seems to have mucho balls to spare.
To me and my ears, this amp is by far more powerful than the upgraded Adcom GFA 545II that it has replaced and is giving my upgraded GFA 555II one hell of a run for its $$$.
Imaging, depth and sound stage are amazing and this amp is DEAD quiet.
With the exception of the GFA 555II, I have always used a sub with my amps in rotation. With this amp, I no longer require a sub for my needs.(and I like to rattle things from time to time )
The low end is SOLID, strong and reaches very deep. The mid range is quite warm(will improve 10X with tube break in) and the upper end is very smooth.
Sitting in my recliner(with a cold one)its almost as if Iam wearing headphones. Sounds now come from everywhere.
I have herd a lot of the "high end" amps that cost upwards of 5X what this amp cost. "Out of the box", this amp will give all of them a solid run for the $$$ that I payed.
This amp has it and a lot of it.
After a month or 2, I will give a review on how its doing.
with some good break in time.
Thanks Bob!!!, you are a great person to do business with and your customer service is about as good as it can get.
A very, very happy me!!!!!!!!