Compare
Side-by-Side
Advanced filters
Type
Heating
Heater V
µ range—
gm range—mA/V
Max plate V—V
Select two tubes above to begin comparing.
Radar on 5 axes
µ, gm, rp, Vp max, Pp max — superimposed polygons show where each tube dominates.
Per-spec verdict
Who wins on gain, on impedance, on headroom. One glance, no mental math.
Sonic character
The narrative voicing of each tube, side by side in readable prose.
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