Need some thoughts or opinions.  I currently own a UFO2.1 fully decked out and zrock2 fully decked out as welll.  I’m using DM947’s and notice that they’re clipping out.  I changed the speakers even thinking they may be have been blown, but they sound the same if not worse now.  I’m about 600-700 on the list for a decked out CSP3 and ZP3.  I’m now contemplating changing my order and selling my ufo2.1 and going with a 300b to get little more headroom.  Thinking the price difference will be about the same after selling the ufo2.1 and I’ve read the 300b doesn’t gain much benefit from a preamp.  Just wondering if anyone else has thoughts on best plan of action.  Go with 300b or stay with the csp3… or any other thoughts of how stop the speakers from clipping with little higher volumes?

I’ve considered selling the speakers, but then realize I’m going to be spending lot more $.  My thought is how to get the best sound with what I currently have for the least amount of $.  Later down the road  may switch out the speakers.  Like you said the 300b doesn’t need a preamp, so it may be better go with the 300b and sell the ufo2.1.  It’s basically an even switch for what I’m going to pay for level 3 csp3.

My room is pretty small 14x12 with vaulted ceiling.  I don’t feel like I listen to the amp that loud, but can hear the clipping.  My thought was that 300b would give me a little more headroom, but also think other amps may be a better option.  Just unsure which one.

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You say you hear clipping, do you see it in the meters? i.e. do they dance with the music when you hear clipping?

If the meters aren't moving you're probably hearing something besides the amp clipping. How old are your power tubes? Perhaps the issue is your tubes are tired.

My room is about your size, and my speakers are about as sensitive as your DM947s. I have 2 UFO25s, which would give me about a 3 dB advantage compared to you and I can blow the roof off and haven't heard (or seen) any signs of clipping. It just seems a little strange to me you'd get clipping in your situation if you aren't listening that loud.

But if your issue is clipping, swapping a UFO2 for Sarah will only get your a few more dB, similar to adding a second UFO amp. Beyond that I pretty much agree with Lon. My first thought would be to find more efficient speakers. Or, if you think a new amp is the answer I'd look past the 300B to something like the Torii Jr.

I had some fun mentally putting my self in your position..... if I had the chance to score a Sarah 300B in a short amount of time ? Id jump all over that and sort the other stuff out later ( speakers, pre amp etc ) .

Sarah 300B is going to be the most difficult Decware piece to find on the second hand market compared to others if you want to play around with other combinations. Just my thought process.

Meters are not moving, I posted a video on the Facebook Decware Fans.  So you could hear the clipping/rattling.

I'm not on the facebook so I haven't seen your video and I don't stream or know anything about your Wiim DAC beyond a quick google, but I'll give you my 2 cents.

"Gain issue" can mean a lot of things to me, but my first guess is your aren't getting enough output from your Wiim DAC, but you are when you use the cheap CD player. It sounds like you control the volume with your amp, not the DAC/streamer so your Wiim probably has fixed output and no volume control, but I would consult your documentation. If the above guesses are correct then what you need is in fact a CSP3 to give you more gain before your UFO2. But, again, just guesses to hopefully get your looking in the right direction.

I'm glad you have figured out the real issue so you can now find a true fix.

I have an SE84UFO with CSP2+ and DM945s in a room a little smaller than yours. My source for this setup is either record player with ZP1 or Geshelli J2S Dac. I typically listen in mid 70s db with peaks in low 80s, but can turn it up to "too loud" without clipping.

As I am sure you are doing, I'd say you've got to figure out your source or your troubles will follow any amp you use. Having said that, I love the CSP/ UFO combo but have never heard a 300B amp. I could have changed my SE84UFO to a Sarah but didn't due to cost difference, to include long term costs for replacement tubes. That's just me though. I'm a spendthrift.

Not sure that helps you decide on whether to go with the 300B, but it should confirm that a CSP3/ UFO/ DM947 can deliver more than adequate volume in your room without clipping.