Tube measurement question...

Thanks, guys, so if I understand correctly then first it's not an issue because my preamp can handle the extra current.  I imagine that if my gear couldn't handle the extra current it would probably blow the fuse.  Also, it sounds like the plate current may be one of the factors influencing sound, and the higher current may be partially responsible for greater dynamics and fuller sound.  

Thanks...yes, the numbers are handwritten.  The spec sheet that I can view from the PSVANE site says the tubes are 60 mA and the handwritten numbers on the outside of the box say they are actually 80 mA.  But perhaps measuring the tubes under different conditions?

Thanks..so I checked my manual and (copied below) are their notes on calibration...basically no bias to set.  I don't hear any volume difference between left and right channel...everything sounds great.  I'm still confused now on what these meansurements mean.  Since they are handwritten it seems reasonable to assume that they are actual tested measurements of these specific tubes.  But what is is measuring?  Is it telling me how much current the tubes pull during operation?  Or is it telling me something about the limit of the tubes?  Is it good or bad that these are measured at 80 mA vs. the tube spec sheet (from PSVANE site) that shows a spec measurement of 60 mA?

CALIBRATION: Each channel is factory-set for 12 dB of voltage gain (1V in = 3.2V out ) via a pair of trimpots located on the main printed circuit board near the headphone jacks. These pots adjust the amount of negative feedback in order to exactly match the gain be�tween both channels. Only 8.5dB of Global Negative Feedback is used which can be con�sidered minimal. Unless you hear a channel-to-channel imbalance after say, changing tubes, you probably do not have to re-trim the levels. There is no other adjustment that needs to be made. There is no bias to have to set

FWIW here are the specs from the PSVANE ACME 300b site for this tube.  I was looking at the below spec for Ia...which is 60 mA...and then looking at the handwritten measurements on the box which said Ia = 80 mA and trying to figure out what that means about my set of tubes...

Heater
Uf(DC)………………           5               V 
If(DC) ……………                1.2            A 
Maximum Rating 
Ua……………                        480           V 
Pa………                                 40             W 
Ik
with cathode bias………     100          mA 
with fixed bias……………  70            mA
Direct Interelectrode Capacitances
input……………                   9              PF 
output……………                 4.3          PF 
grid to plate……………      15            PF

Static parameter
Ua……………… 300      V 
-Ug……………    60        V 
Ia………………   60        mA 
Gm……………    5.5       mA/V 
ri………………   0.7       KΩ 
u ………………   3.85 
Pout……………  6.6       W 

Thanks for the great explanation.  Makes perfect sense...really appreciate it.