I have the blue pointed head Tele CCa (without the <> )
I think it is a special order from Siemens.
They are unbelievably better (organic, weight, tonality) than the Semens CCa (definition, clarity, no bass & weight)that comes 2nd (but not close) & miles away of the Tele ECC88 (thick, homogenise bass, no detail & definition).
Now bear in mind that these 3 tubes are by far better than :
ITT (polite & laidback), Siemens ECC88 (complete but low-fi), EAT ECC88 Diamond (-a Tesla in tuxedo- dirty HF, etched).
Unfortunatelly I didn't have the original Tele CCa to comment.
I test them in my active battery pre-pre.
Regards
George
I think it is a special order from Siemens.
They are unbelievably better (organic, weight, tonality) than the Semens CCa (definition, clarity, no bass & weight)that comes 2nd (but not close) & miles away of the Tele ECC88 (thick, homogenise bass, no detail & definition).
Now bear in mind that these 3 tubes are by far better than :
ITT (polite & laidback), Siemens ECC88 (complete but low-fi), EAT ECC88 Diamond (-a Tesla in tuxedo- dirty HF, etched).
Unfortunatelly I didn't have the original Tele CCa to comment.
I test them in my active battery pre-pre.
Regards
George