gain control issue


I have a unico hybrid amp. [80watts] driving celius 202 speakers in small room 11'w13'd by 9'h. I can only turn the volume up to 2.5 on the dial then it is a bit loud. Am I loosing anything by having a lack of control re volume, if so is there a solution?
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I have Celius 202, very efficient. Something sounds amiss. What is your source? A low gain phono maybe?

Thanx,
Russ
The sources are Unico cd player and rega 25 tt. The lack of gain control is the same for each source. The gain control dial goes up to a max of 10 stops. I am checking out some attenuators. Thanks for the input.
Ahh, I get it, sorry. I thought you didn't have enough gain, was thinking 2:30 o'clock on the dial. As suggested, I'd call Unico or Kevin Deal at upscale and see if they had a solution.
Thanx, Russ