Who listen to both PSVANE UK-EL34 and PSVANE EL34PH? What is sound signature difference: bass, mid, highs balance? Are they both reliable?
Both are ok, but way overpriced. Honestly for the same price you can get a NOS set of quad matched mullard el34s, so why would you pay that much for a replica when you can buy the original?
Plus, they are not all that much better than your standard EL34s from shuguan or however you spell that name.
My favorite EL34 replacement is probably the valve art el34. These sound closer to the mullard tubes in my dynakit mark iv than the psvane tubes.
The other tubes to try are the 6ca7s. Its an electrically equivalent tube, but it uses a beam former vs a suppressor grid. Might be an interesting experiment.
Plus, they are not all that much better than your standard EL34s from shuguan or however you spell that name.
My favorite EL34 replacement is probably the valve art el34. These sound closer to the mullard tubes in my dynakit mark iv than the psvane tubes.
The other tubes to try are the 6ca7s. Its an electrically equivalent tube, but it uses a beam former vs a suppressor grid. Might be an interesting experiment.
NOS is much more than 100 USD for one tube and its impossible to get a lot.
Have you ever try mentioned tubes? How do they compare with Valveart ? I was trying JJ 6CA7 didnt like tham - harmonics empy, glassy sound.
I presume you did not reset the bias voltage to attain the correct quiescent current. Very important to set the correct current.
For class A, I prefer 65% dissipation and for class Ab1, 20%
If your replacement valves draw too little, the effect is glassy, too much and they run very hot.
For class A, I prefer 65% dissipation and for class Ab1, 20%
If your replacement valves draw too little, the effect is glassy, too much and they run very hot.
You can find nos mullards for ~100 or less. You just gotta be patient.
And yes, I have tried the mentioned tubes. The valve arts IMO were more natural sounding. PSvane tubes always seem to sound a bit up tight. If anything their tubes sounded more like telefunken el34s than mullards.
Valve arts are just plain good tubes. They are much easier to listen to and enjoy IMO.
And I know I am going to get crap for this, but I have never been a fan of JJ tubes. They never seem to sound quite right no matter what you do. The chinese tubes I can pop right in, bias them up and have them sounding pretty decent right out of the box.
Interesting. For an EL34 rated at 25 Watt, that 20% figure would mean 5 Watt dissipation. Assume 400V on the anodes, that would be mean 12.5mA and that sounds very low. In your opinion, and I am not being critical, you would be OK with that and it still sounds good?
I do in fact run EL34s near around 65% as well, pretty much always.