Did I buy a broken amp?


I purchased a used amp to mate with a dac / preamp in the same line which I own. The new amp is suppose to be 150 watts into 8ohm.  When I play the amp at 35/100 volume, I barely hear any sound.  I need to get volume  to at least 75/100 or 80/100 to provide adequate listening sound. 75/100 sounds how 50/100 should sound. (And so on)   It does not seem to clip or distort.   Could the amp be broken or does it just not provide enough juice for my speakers? 
Equipment:
Preamplifier / Dac Wadia 321
amplifier:wadia 315 
Apple TV source 
speakers: Kef 201/2
puffbojie

Showing 1 response by almarg

The following statement appears in the manual for the Wadia 321:

A Volume Setting of 88% on the Wadia 321 will provide optimum performance when it is connected to a Preamplifier (Integrated Amplifier or Receiver).

Also, Stereophile measured the sensitivity of your speakers as being a rather low 85.5 db/2.83 volts/1 meter.

Both of those facts seem consistent with the need to utilize the Wadia's volume control at relatively high settings.

Regards,
-- Al