Q impedance?
- Thread starter charger
- Start date
Which impedance?
Input is about 100K, output impedance is 2K stock, and 4K with the PJCCS.
Input is about 100K, output impedance is 2K stock, and 4K with the PJCCS.
Grainger49
New member
Outputs of sources and preamplifiers need to be low. Some solid state products have an impedance like an Ohm or less.
Tubed devices are higher, like the Quickie. They are at their best driving a higher load, say 10 times higher. This is why Bottlehead amps have a 100k Ohm or higher input impedance.
Tubed devices are higher, like the Quickie. They are at their best driving a higher load, say 10 times higher. This is why Bottlehead amps have a 100k Ohm or higher input impedance.
charger said:
How would you define a low impedance preamp?
fullheadofnothing
Moderator
12,000 / 10 = 1,200
1,200 < 2000 < 4000
Numbers matter less than sound. These are rules of thumb, not laws carved in stone. If you are satisfied with the sound, then that is far more significant than any formula.
1,200 < 2000 < 4000
Numbers matter less than sound. These are rules of thumb, not laws carved in stone. If you are satisfied with the sound, then that is far more significant than any formula.
Paul Joppa
Moderator
Totally agree!fullheadofnothing said:
In fact, specific to the Quickie, if you put in the PJCCS the source impedance will double, as mentioned above - but the tube will see a much higher total load resistance and will perform better with lower distortion.
Grainger49
New member
I agree with the adage, "Always trust your ears."
