Received via email by Thomas L.
“Dear Grant Fidelity,
I’m writing to let you know that I have received the PSVANE 12AU7-T Grade A tubes. I believe by now, a lot of people know that the PSVane T-tubes are good. But I’m not sure if any one of your customer have done a direct comparison to a brand new NOS tube. I’m comparing it to a Brand new NOS Telefunken 12AU7. I’m sure you probably have heard the following details many times, this may be just a reiteration of what all you existing customers are saying.
Just out of the box, the PSVane beats the Telefunken in EVERY WAY. Most significantly is the level of details and clarity, the Telefunken is no where close. This includes comparing with broken in Telefunken 12AU7. Equipments in the soundstage are spot on. String simply has more texture and reverb is more obvious. The Tube reveals so much more details but not bright at all. Soundstage depth and layering are much improved. All of these improvement are just with $99 USD. I spent roughly $230 on the set of NOS.”
See what SixMoons.com reviewer says about Psvane EL-84T tubes: “The matched pairs of EL84-T looked high quality with their gilded pins and felt reassuringly solid but how would they sound compared to the Russians? We had to be patient because the tubes had thus far endured only a few hours of playing time. Psvane suggests 75 to 100 hours to really get them going. We followed that advice and had the Kaivalya play at a very low volume for a few days. When show time was at hand, the difference to the ‘Russian sound’ was very clear. There was the same slam, quick impulse response to musical cues and solid soundscape but all with an extra. The impulse behavior was tighter and with a slightly fuller body as though now there was more mass behind the attack and the volts delivered had a higher charge. Compared to the Russians, tone was more polished around the edges and went down with a smoother finish. It is very likely that these Chinese tubes are less microphonic in character….. 
