First I would like to thank Ari for the opportunity to listen to the "RS-60". Now, what the heck is a Grado "RS-60" you ask" Fair question, it is a hybrid concocted by our own nikongod, member of Head-Case. He had a vintage RS-1 (w/ the brown leather band) that somehow a person managed to blow the drivers off, so he transplanted a pair of SR-60 drivers into the old RS-1 frame creating the "RS-60" which I have had for about 10 days. Here is a picture with the RS-1 to the left and the "RS-60" to the right.
So, how do they sound? As you probably imagine a lot closer than expected, but there are differences such as:
1. The treble is more extended on the stock RS-1. I can see where those who do not care for the Grado top end would choose the "RS-60".
2. The "RS-60" plays louder at the same amp volume setting, this took me by surprise and others found the same.
3. The RS-1 has a wider sound-stage, while the "RS-60" although the sound stage is a bit narrower it has more impact.
4. The RS-1 has an overall clearer, more detailed presentation.
The above differences were consistent regardless of whether I used a SS or tube amp. I have been listening to the "RS-60" quite a bit and will go out on a limb by stating that if you you just want to listen to music then this may be more appealing than the RS-1. This because the RS-1 IMO demand constant attention while the "RS-60" allow you to simply immerse yourself in the music and have a good time. If on the other hand you will be comparing gear the RS-1 would be my choice since it is more revealing, has better micro-dynamics, better decay, and it is clearer. Note: These are not night and day differences.
Thanks.