What is it about the 12AU7 that you don't like with the LYR 3? . . . not enough muscle?
[I like the delicacy and detail of a 6DJ8/6922 with the LYR+. Not slammy dynamic (at all), but great for vocals and acoustic venues.]
Hmmmm I can't explain, felt like Lyr 3 doesn't have enough power to push it? Like vocal sound distant and everything sounded a bit too relaxed? Not enough ommph? Or clarity?
I wonder if it's because it's 12v tube or maybe I didn't have the correct adapter.
What is it about the 12AU7 that you don't like with the LYR 3? . . . not enough muscle?
[I like the delicacy and detail of a 6DJ8/6922 with the LYR+. Not slammy dynamic (at all), but great for vocals and acoustic venues.]
I have a Vali 2+ that is built for the smaller 9-pin tubes and a Lyr 3. The Vali 2+ sounds better with an adapter and a 6SN7. So I never tried the opposite - a smaller tube in the Lyr 3. Just my probably inexpert opinion. I listen to a lot of Frank Sinatra - he recorded on an actual stage with a band as much as possible. The 6SN7 and the smaller tubes both place him "in the middle" with my Vali. But the 6SN7 makes him sound "taller", seriously, also less "ghostly." I like the Vali, but the Lyr is better in every respect.
• To @Hyde00 and @pataburd: a 6SN7 tube, a 12AU7 tube have the same amplification factor (gain) - 20x. Their filament (heater) currents differ: 600 mA for 6SN7, 300 mA for 12AU7 (in series). An amp, such as Lyr 3, designed for 6SN7 can accomodate 12AU7 - but not vice versa.
• For @Hyde00, which 12AU7 did you use? Did you try a variety of 12AU7 as well as a variety of 6SN7? If not, saying that 12AU7 < 6SN7, or 6SN7 > 12AU7, de facto seems premature.
• For @Hyde00, which 12AU7 did you use? Did you try a variety of 12AU7 as well as a variety of 6SN7? If not, saying that 12AU7 < 6SN7, or 6SN7 > 12AU7, de facto seems premature.
I would like to thank the contributors to this thread for helping me developed an unhealthy obsession with finding tubes to roll on my new Schiit Lyr 3.
I have so far been able to collect:
1. RCA NOS 1940s
2. Philco Sylvania
3. VT231 Sylvania NOS
While it may not be 100% true, these tubes bring the promise of elevating music beyond what the stock Tung Sol can bring to the table.
What was interesting was that the VT231 Sylvania NOS for the 1st hour was making a hell lot of crackling sounds / humming. After a while, it goes away and now it works perfectly.
I thought about it, but then I also realize I generally like to try new things if possible.
So chances are I'll find upgrade tubes before my old ones die. Theoretically I'll never use a tube long enough to kill it before I get new tubes (because we always want to buy new things).
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