If you like warm, lust, mellow sound from your system. You should go for old tube likes Seimens or Philips. I'm using a ARC SP-11 MKII preamp, originally its used ARC sovtek 6922. Its sound very bad, likes solid state!!! I nearly sold it! But after I changed the tube to old Seimens or Philips. Wow!!! Major inprovement and I'm keeping the SP-11 for as long as I could(lust, warm and mellow and the dynamic is unbelievable)!! Forget about the sovtek, not even from ACR. I have some of the above tube just lying around. If you need any, let me know.
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