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Output / Input Voltage Question

If I have a preamp that outputs 1.5v, but the amp's input is .5v, would this be the reason I don't have much headroom when I turn the volume up?  What is an ideal voltage match for preamp/amp combo?  Sorry if this is a dumb question.  Electrical stuff is not a strong point for me.
terrapin77
russ69's avatar
russ69
3,523 posts
 
Combo is good, all you need is enough voltage to drive the amp and you have 3 times that. Not enough headroom, you need more amp.

P.S. 100wpc is not a lot of power. 
terrapin77 OP
87 posts
 
@russ69 My amp is a rebuilt and upgraded Quad 405 driving 4 ohm speakers.  Can't go past 40% volume without being way too loud.  I do have a small listening room though. 
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donvito
400 posts
 
.5 volts is an unusually low input sensitivity for an amp. You can put an attenuator between the amp and preamp to fix the problem. This Schiit SYS will work!
https://www.schiit.com/products/sys
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