Yes. The ECC88 is more noisy and warmer than the E88CC.
Noticed why I never mentioned E88CC or 6922?
The ECC88 Siemens only comes in nickel plated pin and not gold pin.
I use 3 Siemens in line stage.
If interested, I still have some NOS ECC88 siemens.
Before I knew any better, I bought close to 50 of these tubes from this guy out in CA for 3 of the SP11 MKIIs we have. I then realized that SP11 MKII is very good design that tubes last very long time in the circuit ( unlike Melos or Audible Illusion.)
You can email me offline if you like.
Noticed why I never mentioned E88CC or 6922?
The ECC88 Siemens only comes in nickel plated pin and not gold pin.
I use 3 Siemens in line stage.
If interested, I still have some NOS ECC88 siemens.
Before I knew any better, I bought close to 50 of these tubes from this guy out in CA for 3 of the SP11 MKIIs we have. I then realized that SP11 MKII is very good design that tubes last very long time in the circuit ( unlike Melos or Audible Illusion.)
You can email me offline if you like.