I have a Unison hybrid integrated which uses 2 12au7s in preamp end. I have used two different Mullard 12au7s, RCA Cleartops, and Radiotechnique, but the Siemens 12au7 NOS (got mine from Upscale) beat them all. Beautiful full bottom end, great midrange, and an open and fantastic top end, no brightness but crystal clear. Wonderfully dynamic.
Question for tube aficionados
I have a vintage Conrad-Johnson PV 11 preamp.
I’ve always re-tubed it with the cheapest tubes from Tube Depot (e.g. Electro-Harmonix 12AU7 and 12AX7, Sovtek 5751 and the like.). I’ve been very happy with the sound.
My question is:
Would it be worthwhile to spend more money on more exotic tubes?
Would there be any appreciable difference in the sound?
I’m powering the system with NuForce Reference 9 V3 monoblocks.
I’ve always re-tubed it with the cheapest tubes from Tube Depot (e.g. Electro-Harmonix 12AU7 and 12AX7, Sovtek 5751 and the like.). I’ve been very happy with the sound.
My question is:
Would it be worthwhile to spend more money on more exotic tubes?
Would there be any appreciable difference in the sound?
I’m powering the system with NuForce Reference 9 V3 monoblocks.