Canary M-500 Monos- which 300B tube-

I use the EH 300B in my Canary Ref 2- with 8 pairs the economy had to be considered. I like them quite a bit. I have no experience with the other tubes you mention.

Good Listening

Peter

thanks guys- I contacted Canary they rec. the EH 300b-But it seems from what I read that they are not in the same league as the EML or SE= I was also told that the Sophia Electric do not Bias well with this amp for some reason and the Psvane also came highly recommended= thks

Bopper,
Keep in mind that EML makes a standard 300b, a mesh plate 300b and the XLS version 300b. I haven't heard the standard 300b but I understand that it is very good. I can personally vouch for the Mesh and XLS versions. The EML aren't inexpensive but their performance justifies the higher cost. The standard EML 300b could possibly be the best value of their choices when multiple pairs are needed as in your case.
Charles,

I have a pair of the M500's. They are my favorite amps that I've ever had. What works really well with them are the Sophia carbon plate 300Bs. I also used a full set of EML 300B XLS which are also very good tubes but the Sophias have more lively sound and I like them better. Both of these choices are already around 600 a pair and you will need 4 pairs, so consider the cost. I think the tubes should last a good amount of time however because the bias is relatively conservative on the Canarys. I also had a VAC Renaissance 30/30 where I was trying these same tubes and it liked the EML better, although the VAC is harder on your 300B tubes.

Most likely the Royal Princess and the Takatsuki are probably going to be too costly to be worth it.

Cfchew makes a good point, the preference for a given tube will vary with a particular amplifier. My Frankenstein SET sounds better with the EML compared to the non Royal Princess Sophia tubes, no comparison. This apparently is not the case with the Canary(different topology, circuit etc.).
Charles,