It is very difficult to match the midbass weight and the large stage the IO creates, and if you roll 24 tubes carefully, you can create any magic
This is where the Io excels- hard to beat at any price
Yes, i am coming to the same conclusion after rolling tubes for a couple of months and also realizing finding good sounding tubes that lasts is a whole hobby in itself.

Ukrainien tube vendors must have me on their preferred suckers list by now !
I had a second Io here for an acquaintance, he was considering purchase, however, there was a complaint of "noise" on one channel.
In the end it was a poorly seated tube from some aggressive tube rolling & I discovered he wore an apple watch around the unit- not cool you will get "chuff" - "chuff" sounds from the cell frequencies - keep cell phones and apple watches away at least 6 feet !
The real story is that the unit was full of Chinese and Russian tubes from the seller and sounded absolutely awful. Flat no life it sounded broken.
In the process of diagnosing the problem I put in noise tested Telefunkens ECC83 and ECC88 along with an RCA red base 5692 - in a word transformational. The sound stage was expansive , detail without grain, depth to die for, tonality and appropriate bass weight ( Try Crash by Charly Antolini on Jeton- Wow!- not something to relax to- but great to judge capacity of the system) . You just can not compromise on tubes with the Io it will not pay you back with the potential. You are dealing F1 here not your local track.
I am no engineer, so can’t be sure what is going on, but the finding has been confirmed by my close group of audiophile friends. The first phono that we found benefited by this dual mono setup was the Pass Xono. From then on, we found pretty much all models without dual mono power supplies from the factory benefited from this setup, including the EAR834, Pass XVR 1 electronic Xover. Actually, I just have an engineer friends custom built a dual mono power supply for my Pass X0.2 linestage.
I think the benefit is due to the beefed up power supply (whole power supply just for one channel), as well as decreased interference between the two channels! Actually, you can also find similar upgrade in factory made units, such as the Aesthetix Io, which can be upgraded from one to two power supplies. As far as I understand, the CH Precision’s flagship P10 phono also offers similar upgrades from stereo to dual mono version.
Other observations: this unit was one power supply - there is a clear advantage to two power supplies way more solidity and separation. With the new transformers a further level of quietness and low end atriculation. If I was unsure about how to describe a 2nd power supply and the new transformers- I am certain now as I had this unit and my unit in the same system - same cartridge playing the same software.
"Embarrassed"? Likely not, but I do think "bettered". But I owned the Klyne 7 back in the '90's, sold it off, but then tried it again with the 3.5 version in the latter '00's. When I then tried an EAR 324, I felt it bettered the Klyne, and so sold the Klyne (again) - - the EAR was more resolving and informative, with also a bit better microdynamic "jump" and resulting performance nuance, IMO. I'm pretty confident a CH Precision P1/X1 would be an upward move, too (I run the P10 presently).
It's difficult to beat the Klyne for SS - I sold one and bought it back - Its the only SS unit I can live with for the price. I had a CH P1 here on numerous occasions for extensive listening and a few people in our group own them - one with absolutely dual mono setup The CH is precise clean with a user interface that is about second to none. Is it" better"than the Klyne- sure- but I could argue why the Klyne makes a lot of sense on many fronts including its presentation.
The SS vs tube debate stands here strongly as there is no question as to the provenance of each unit. If you are partisan to any one philosophy - you probably can't live with the alternative.
Yes, the Io’s mid bass weight and soundstage is still hard to beat

To my ears, while the dual mono EAR834P sounds quite nice, it still lacks the Io’s resolution and authority. But then, I have never auditioned the 834P with Telefunken tubes, so that could make a difference, especially in terms of resolution.
I must admit that I have never tried dual mono EAR834P - but its stock version here was good- I will call it good for the money- but it's no Io no how- even loaded with NOS tubes out of my stock-- YMMV