I have 2 sets of Infinity Reference Standard 1b's, IMHO they still hold their own against all other speakers at any price point, plus they can play at life like levels (rock concert) if needed. They only issue with these speakers is that they want a nice flat wall to reflect the rear wave off off (similar to Magneplanars and other dipole radiator loudspeakers). I used to get flown around to set these up.
I probably am going to sell off one pair of mine in the next few weeks when I get around to posting them on Ebay. The last set of RS1's (RS1-a) ended up getting crated and sent to British Columbia.
When dialed in,,, nothing else gets the highs lows, mids correct and blended seamlessly without giving oversized images and still ahve a true unified wave launch out sound. Listening to Asassin's Tango (Mr & Mrs. Smith soundtrack) you hear and feel the impact of the opening Piano notes as if they just came off the the open piano and hit you in the chest. No other speaker is capable of doing what these do.
Listen to Pink Floyd Dark Side of the Moon, and Brain damage has the voice floating about 3 feet above the speakers as it was mastered, not a lot of drivers that have the magnetic strength of the EMIM in combination with a nearly massless diaphram that can reproduce these sort of subtleties. Magneplanars have a heavier diaphram and much weaker magnetic field per sq inch. Yet Maggies still sound very good (I also own Magneplanar Tympani's in my ski house)- so imagine a much faster, forceful, delicate, and resolving maggie...but with bass...real authoritative delineated bass.
Unfortunately (big WAF negatives) few speakers are as huge as these, and parade into your room about 38" either, so that's why I am selling a pair. But they really are everything they were cracked up to be. Many record reviewers still use them, and speakers that were once "flavor of the month" have come and gone and lost value compared to these speakers.
Mine are in Corona Del Mar, Newport Beach California, perfect weather for these. sad to sell them but I need a deposit for a Tesla Model X. These and the IRS were what Infinity was all about, but few people had a room large enough for the IRS.