Tubed Monos for Focal Aria 948s

@decooney I have a Prima Luna Dialogue HP pre amp that is connected to a pair of Odyssey Khartago mono blocks. They sound fine as is but the Focals are so clear that it sounds a little lean in the bass. As erik_squires pointed out, there is a dip in the upper bass range so my thinking is that the warmth of the tubes may help the tonal balance. Is this is incorrect?

...my thinking is that the warmth of the tubes may help the tonal balance. Is this is incorrect?

No, not incorrect but I will say there may be other areas to mess with before jumping to tube mono amps to remedy the leanness. Sure a pair of tube mono amps with smooth sounding EL34 tubes can "round off" the highs a tad to accentuate the bass some but you may have other options to try before you try other amps... tape a paper towel over your tweeter on your speakers as a cheater simulation test...: heheh.

I took a look at your amps, torroid transformer, notable power quad caps and while don’t know much about your amps sonically - but know a few locals with them that did go to tube amps later but for sonic reasons OTHER than adding the weight and fullness you seem to be looking for (below 200hz) with your Focals. With that said, I think you might look at some other areas if you want to keep your Odyssey amps. They are kinda nice. Perhaps restarting with 1) your preamp/upgrades, preamp tubes, preamp caps and 2) maybe even some softer and more rolled off interconnect cables next to cheat some...a tradeoff some times (chat via private message), gotta few ideas there too from my own hybrid tube preamp / ss combos. And, if you have not already done so. 3) maybe look at adding a little REL subwoofer is a nice cheater fix to fill in that dip. They can sound nice. I build my main speakers and custom subs and a good sub can help fill that void particularly for low volume level listening and permit your mains (to work less hard) to resolve better too in a large room. Look at what some of the more expensive Wilson Audio speakers are doing the past decade, see the lower half of he speaker :) Just a few other thoughts, feel free to send a private message. Gotta a few other questions for ya. Your preamp has the triple 12AU7s per side, correct - or older version. The new PL labeled input tubes in those preamps look like rebranded PSVANE tubes, sort of. Also noting the Mundorf caps in the newer version pre - I run those same caps in a tube DAC, but there are other caps that are warmer, less tinny, the EVO supremes are fuller, IMO. You may have other areas to work on IF you keep those amps you have now.

To the extent this is helpful - 

I used 60 watt per channel Allnic 300B XLS amps to power Focal Sopra 1s, and it worked like a dream, more bass than I ever would have imagined. I could play it loud. However, I never cranked it alllll the way.

I currently use a pair of Conrad Johnson's that put about 180 watts into 8 ohms, and they power my Sopra 2s perfectly. Extension in both directions, more than enough power to play very loudly.

@gmercer I'll bet that sounds great. If the Sopras sound half as good as they look you must be pretty stoked. I heard a pair of Kantas at a dealer's home and that's what got me hooked on Focals. The clarity and detail was like nothing I've ever heard so when an opportunity to score some 1.5 year old 948s came up at the price they did, I jumped. I figured they would be lean in the bass like the Kantas but they are not at all. They just need that something extra to push them across the finish line.