Jon, I'm kinda surprised that NOS EL84's don't sing in the Almarro. That is an amp I am interested in.
It's not that NOS EL84's don't "sing." I just prefer a vivid, immediate, super-clear yet dense type of sound, which is how I'm tuning my Almarro, using VCap Teflons, vivid tubes, cord, IC's.
If I feel a bit more laid back, expansive, smoldering, yet still clear in more a silky way, I hook up my 2A3 SET, which has been tuned toward that goal, using Jupiter coupling caps with Mundorf silver/oil caps, etc.