Very nice and harmonic top end and mids, liquid tone with airy heights. Bass is tight but not oversized. Great warm analog tone even when driven to saturation.
The TAD-EL84-STR does combine best of both worlds. TAD chose the thickest glass option (Mounting Diameter 22mm) and most heavy construction like the russian EL84M and sonically most promising cathode and plate option to meet and exceed the tonal quality of the EL84-Cz. Finally we added the gold grid wire to limit stray characteristics and to improve overall reliability. The result is one of the best EL84 valves currently produced.