I have a HCT HMS-100 hybrid amp (OEM of Fatman iTube or Dared MP-5) with Chinese 6n1 tubes as input. It's time to replace these 6n1 tubes. When I search for them on the net, I come across three tubes:
- 6n1j (or 6n1 j-grade, it's said)
- 6n1p (or 6n1p-ev)
- 6h1n (I have no idea about this one. It's said it is the Russian equivalent
Although HMS-100's manual comments under the exact title as follows...The Use Vacuum Tube: 6N1 (ECC85) x2
...as far as I know there are NO direct, 1-to-1 western replacements for 6n1 tube.
BTW, Fatman iTube's manual, also, suggests the same.
I want to ask, what do "j" or "p" (or 6h1n itself) stand for in those 6n1 tubes' designations?
Are they direct, 1-to-1 replacements for 6n1 tubes in my HCT amp?A different route which I won't be fond of:
Shall I look for ECC or 12xxx tubes?
BTW, I noticed that the input tubes on Dared MP-5 are 12AX7. But I have no idea whether MP-5's and HMS-100's circuits are equivalent or not!