On Andrea Ciuffoli's PF site, they said that
The input impedance is 47KOhm/1450pF and its resistive value can be adjusted by a pretty wide range, just using a different input resistance.
The input capacitance, 1450pF, seems to be very high. Please note that a gain stage with a 1000 Ohm output resistance gives a > 100 KHz cutoff frequency.
Do they have any problem when use PF 99 with 2A3 pre-tube?
Do we have any way to reduce input impedance and capacitance?
|All times are GMT. The time now is 11:51 AM.|
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright ©1999-2014 diyAudio