This is my question
- Can it pair with grado HF-1
Absolutely, the SLAM drives Grados extermely well. I use the MS2i and a woodied MS1; great combinations.
- Tube Rolling ?
Many, many combinations! Depending on the gain tube socket, octal or 9 pin, you can also use the octal to 9 pin tube socket adapters for even more choices. The original SLAM had a 9 pin tube socket wired for the 6cg7 (RCA/ Raytheon/ Sylvania). There is a direct sub called the 6gu7 (RCA/ Raytheon/ Sylvania) that is even better to my ears. For the output tubes it is hard to beat a Tung Sol 5687. Sylvania and Raytheon also made a nice sounding 5687's. In addition, you can use the Amprex 7119 or the 7044. I like the GE 7044's.
- Price of the new one and second hand one.
The last I knew the SLAM was $899 . But, I bet the price has went up some with the rise in parts cost. I have bought two used SLAM's and paid between $600-650. I would buy used if you can find one.
- Upgrade ?
Not necessary .... I prefer the plain stock version.
- Interconnection that I use with this rig.
I use IC's from Enigma Audio. Their copper IC with carnare plugs is a very good match and reasonably inexpensive. I have tried their silver hybrid IC, which is a tad to analytical for me with this SP amp. Their gold alloy IC is probably my favorite. But he can no longer get the wire to make them.
EnigmaAudio.com