I know what Neonknight means but I don't agree completely.
But some thoughts on this topic:
I nearly had all of these tubes mentioned in the thread; I used them in my Audio Research both LS2 and LS7 and in a German pre by the manufacturer Raphael Audio (cathode follower).
In the Raphael Tesla E88CC work pretty well as do Tesla PCC88/7DJ8 (I could not hear any difference between E88CC and 7DJ8). They sound elegant with no emphasis on the upper or lower frequency band. All in all, the tube(s) made me happy, no further reason for tube rolling.
But when I put theTesla (old production, blue and yellow label) into both my AR linestages, I was heavily disappointed. I missed the air and liquidity I was used to, and the sparkling highs as well. Telefunken 7DJ8 did a much better job, Philips (Dutch production, stainless steel getter) are at the same level, the latter a tad more intimate and a tad less dry.
But there was one tube that outperformed them all: The Tungsram 7DJ8. There is also a Tungsram 6922 on the market some guys praise highly, but I have to admit I did not buy them, way too expensive.
And another tube that delivered sheer bliss in the first two positions of my AR LS7: The Tungsram 7ES8/PCC189. These delivered more punch, greater dynamics and authority with any lack of clarity and detail.
I do not know how these work in other preamps, but they fit my needs exactly.
Don't be shy to buy these tubes, I think they are cheaper in Europe, especially here in Germany, but I am not shure.
Regards,
Jan
But some thoughts on this topic:
I nearly had all of these tubes mentioned in the thread; I used them in my Audio Research both LS2 and LS7 and in a German pre by the manufacturer Raphael Audio (cathode follower).
In the Raphael Tesla E88CC work pretty well as do Tesla PCC88/7DJ8 (I could not hear any difference between E88CC and 7DJ8). They sound elegant with no emphasis on the upper or lower frequency band. All in all, the tube(s) made me happy, no further reason for tube rolling.
But when I put theTesla (old production, blue and yellow label) into both my AR linestages, I was heavily disappointed. I missed the air and liquidity I was used to, and the sparkling highs as well. Telefunken 7DJ8 did a much better job, Philips (Dutch production, stainless steel getter) are at the same level, the latter a tad more intimate and a tad less dry.
But there was one tube that outperformed them all: The Tungsram 7DJ8. There is also a Tungsram 6922 on the market some guys praise highly, but I have to admit I did not buy them, way too expensive.
And another tube that delivered sheer bliss in the first two positions of my AR LS7: The Tungsram 7ES8/PCC189. These delivered more punch, greater dynamics and authority with any lack of clarity and detail.
I do not know how these work in other preamps, but they fit my needs exactly.
Don't be shy to buy these tubes, I think they are cheaper in Europe, especially here in Germany, but I am not shure.
Regards,
Jan