Electro-Harmonix Factory Platinum Matched QUAD (FOUR) 6550 Power Tubes
Matched QUAD Electro-Harmonix 6550
New, factory Platinum matched set of FOUR Electro-Harmonix EH 6550 tubes.
These are burned in for 24 hours, factory matched at real world voltages and then the test results are labelled on each tube box.
The Electro Harmonix 6550-EH tubes have excellent linearity, power handling capacity and heat dissipation. Four-pillar construction and mica spacers help maintain a rugged mechanical reliability. This ensures classic tone is sustained at a prolonged, high output. A new leaded glass compound is utilized to maintain vacuum integrity, balanced performance and ensure long life.
They are all recent date codes.