Input sensitivity, Gain and Preamp matching

Pani hi, before doing anything suggested, what are your source/s, maybe they have the output volts that's needed >2.5v as many do these days, even phono stages

Your amp is high at 2.5v, the input impedance at 47kohm is fine, if your source/s have this >2.5v then yes a 10kohm passive will work great.

But I would be wary of passive TVC's that have a gain switch, as they can "ring" if the gain part is used, in unity gain they seem ok.

Cheers George

Milpai: My amp is 1V for full power,and I use a TVC. Or else, like Al mentioned, you will not hear the "full potential" of your system.

So long as you can get to the volume level you like to listen to IS ALL THAT MATTERS, even if a passive is full up there will be absolutely NO missing out on the dynamic peaks, so long as the listening volume is as loud as you want to go, even if full up. There is NO brick wall regarding transients.

In fact passives are usually better if they are full up, as there is less shunt resistance to ground, so the source (if a weak tube output) sees an even easier load, which equals better dynamics for them.

It's doesn't matter if you can't send you amp into overload (in fact it's a safety device) so long as the volume is right for YOU!.

Cheers George

Hey Al good to hear from you, as you stated, yes a few of the quietest early cd's have low recorded volume and your -6db seems about right for these.

So even if Pani has source outputs 2.5v this will be ample for 90% of the rest of recordings to play at full amp clipping, and if he has 4v from his source/s that will also take care of those quite -6db as well to drive the amp to clipping.
But, and a big BUT, when do we do our listening just below full output (clipping) of the poweramp anyway??? Unless we like blowing amps up to speakers.

All is moot anyway till we find out what source/s Pani has.

Cheers George