I heard PS Audio was offering full 100% retail trade-in of the 300’s for the new 600’s, return shipping thrown in for good measure. If we are going to start rumors, why not?
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That is why they can be switched on and off with remote. Like in a P20. One can cater to both of our preference crowds as a manufacturer. Best of both worlds
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In today’s Paul’s Post he mentions having 600’s in Music Room Two:
Have you ever noticed how our stereo systems seem to match our personalities?
I am without question an over-the-top personality who leans to extremes and promotes an inclusive liberal bias to life. I want to share what’s important to me.
With that in mind, consider how Music Room Two reflects those values. I doubt anyone would argue that 1.2 tons of Infinity IRSV isn’t over the top. Nor would I be shy in pointing out the listening room’s multiple P20 Power Plants, BHK 600s, and more dollars tied up in Audioquest cables than what many consider an expensive automobile.
Over the years I have come to be able to often correctly guess a personality based on their system. Conservatives, liberals, artists, whacky, reserved…you name it.
That our beloved passion is able to support the myriad of personal choices is a blessing.
We can each shape our systems to perfectly match who we are.
That’s HiFi magic.
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All i can tell is if someone is whacky by looking at ones system. So far can´t really tell if person is a taxi driver or industrial cleaner 
Need some more time to learn… 
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@Paul said the 600’s would be at RMAF before it was cancelled so it makes sense he would be running them in the reference system now.
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@DarrenMyers talks a little BHK 600 on the latest episode of the hifi podcast. It begins around 23 minutes and 30 seconds if you want the listen to it.
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Every amp ever does that. It’s how they work.
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Ha good point I must of been out of it.
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actually stumbled upon the pod this morning, before seeing this post.
So tired of people who “try too hard” during podcasts, and think they’re the next Howard Stern or whatever. And they fill the space with verbal noise. Sooooo irritating,
But Darren and Duncan are super laid back and natural. Really good listen.
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The podcast list on the website are a couple episodes behind.
The BHK 600’s can be seen in Paul’s latest videos behind the IRS V.
Not sure why anybody would need them or what speaker they think they would be needed for. Even my power hog Vandersteen Treo CT’s were fine with the 250. They were a real example of spec fudging.
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BHK 300 offers more headroom than the BHK 250 amp, and it shows with the improved sound…
No reason to doubt the new BHK 600 won’t do the same to the BHK 300.
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Don’t need it with 93db speakers but if you think you do then jump onboard. Wouldn’t do it with the first couple of batches though. I have done monoblocs before of the same amp and didn’t hear the improvements that warranted double the price.
Most speakers aren’t 93dB efficient. Also, with my Duntech Senator speakers (90dB efficient), absolutely worth having thd BHK 300. Any resolving system would benefit from the BHK 300 mono over the BHK 250 amp. Was talking to PS Audio dealer rep, biggest buyers of BHK 300 monos are existing BHK 250 owners.
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You keep believing those generalizations if you want to and I will believe 50 years of experience. Also no sealed box first order crossover speaker will ever test anywhere near 90 db efficient. This is an example of the same specification fudging that JA caught Vandersteen at multiple times. The fact that Halcro uses them as test speakers should be a clue. Same as Magico here.
I know my apogee’s could use even more power than 600 watts, at 80 db sensitivity. I heard a pair of properly powered apogee diva’s, with audio research 610T monoblock amplifiers for the mid-range/tweeters and krell 750 mcx monoblock amplifiers for the bass panel actively bi- amped, it was one of the best setups I’ve heard.
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Do you use subs with them and if so, does this blend well?
Such absolute statements are dangerous. 
Stereophile, when testing the Dunlavy SV-IV/A, a first-order design, stated “The Dunlavy SV-IV/A is a sensitive speaker, my B-weighted measurement of 91dB/2.83V/m being within measurement error of the specified 92dB figure.” See:
I am certain you know the connection between Duntech and Dunlavy.
See, also:
“The Thiel CS3.7’s voltage sensitivity is specified as 90dB/2.83V/m. My B-weighted estimate on its tweeter axis, assessed with DRA Labs’ MLSSA system, was slightly above that figure, at 90.7dB(B)/2.83V/m.” (The Thiels employ first-order crossover slopes.)
I bet there are other first-order crossover speakers which are similarly efficient in addition to the Duntechs, Dunlavys, and Thiels.
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