Klipsch Forte ii too bright, or is it my room ?

Try any tube amp. Low wattage is fine. Inexpensive is fine.

I have loved Klipsch speakers....or been fatigued by them using the wrong amp. For me the wrong amp was a solid state HK receiver. Yikes!

I disagree Corelli. It's about the synergy between equipment and balancing your system to your room acoustics. 

holmz +2

+1 @russ69 
+3 @ holmz

Even when new I never cared for Pioneer in the 70's. At 50 yrs old its wore out with dried up capacitors, etc.

room full of glass and tile

 Guaranteed to brighten any sound

 would a mid-priced tube amp work, +/- $500

We no longer live in the 1970's. $500 was a good budget in the 70's but not at all today. However for $1500 you can get a VTA Bob Latino ST-70 which will put you way ahead in sound. But you will need a preamp also. They also have them. And you need to tone down the glass & tile. Curtains and rugs are needed.

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I agree, try vacuum tube amplification, even low power vacuum tube amplification, before you give up on the Klipsch. How about a little 15w/Ch amp based on EL84’s.  There are some decent integrated amps of this types from China or power amps made in USA by tubes4hifi.  Years ago, Dynaco made wonderful sounding EL84 amps, the SCA35 and ST35.  Tho not as powerful, many listeners prefer these to the ST70.