Tremendous harmonic content and an overall depth in sound make these Winged “C” / SED 6L6GC tubes another excellent choice for the purist.  They can handle solid plate voltages and are very well constructed.  Consider these 6L6 tubes as an excellent choice for any type of music, delivering crystal cleans and smooth breakup with plenty of punch. Unequaled clarity and complex harmonics, plenty of sustain and depth.