Tight Tolerances In these tubes the tolerance of electrical ratings are reduced in comparision with standard tubes. Vibration and Shock Proof The tube withstands accelerations of 2,5 g at 50Hz for lengthy periods and momentary shocks of 500g for short periods. Cathode Free From Interface The cathode establishes no interface even in cases where the heated tube is operated without plate current over lenghty periods. EAT ECC-88 Cool Valve Data:

Life : 10,000 hours

Mechanical Quality : Shock and vibration resistant

Base : Noval. Gold plate pins

Heating : Indirect AC or DC; parallel supply

Heater Voltage : 6.3 V

Heater Current : 300 mA

Anode Current : 15 mA

Mutual Conductance : 12.5 mA/V

Equivalent Noise Resistance : 300Ω Noise Factor (f = 200 MHz) : 4.6 dB

Substitutes: E88CC, 6DJ8, 6922

TNT Audio Review of EAT ECC88