I would be really interested to hear the Soulution 7 series next to CH.
From what I gathered from JV's review, is that he likes CH for some attributes and Soulution for others. This is par for the course at this level of gear IMO and why listener tastes, objectives and system synergies support a variety of brands to choose from. As a overjoyed CH C1/L1 user (no M1 in my future unfortunately) I am as subjective as others about their gear.
In addition to awarding the CH L1/M1 product of the year, Valin has lots of positive things to say about CH in the review.
"On the other hand, the M1/L1 bests the Soulution in resolution, treble extension, and overall control—by enough of a margin to make a sonic difference. Indeed, in these three respects the CH combo is highly reminiscent of Technical Brain’s incredible amp and preamp, which were the highest resolution, highest transparency, and (once again with the right speakers and the right source material) most realistic-sounding electronics I’d had in my system prior to CH Precision. (CH’s patent-pending bias-stabilization circuit—similar in principle to what TB does with its temperature-compensation bias circuit—may be the reason for this sonic similarity.)
Indeed, the CH gear may (repeat, may—I haven’t heard Naoto Kurosawa’s latest iterations) outdo Technical Brain electronics in transparency and resolution thanks to a tonal balance that comes as close to colorlessly neutral as anything I’ve heard, tube or solid-state. Neither slightly darkish like Soulution nor slightly lightish like Technical Brain, the M1 and L1 open a window on the music (at least with vinyl sources, the Audio Consulting Silver Rock Toroidal phonostage, and the Magico M Project/JL Audio Gotham loudspeakers) that seems to take in…everything—simply incredible amounts of blur-free low-level (and high-level) detail.
On the other hand, if you want to hear Dean Martin or the Juilliard Quartet or the Chicago Symphony Orchestra or Ry Cooder and his crew sound so “there” they’ll make you blink—if you want to hear what’s actually on recordings (and how those recordings were miked, engineered, and mastered) reproduced with virtually no editorialization—then you really ought to listen to the M1 and the L1.
I don’t want to hit this point too hard. The CH Precision M1 and L1 are world-class electronics—and, alongside the Soulution Series 7 components, my new solid-state references. Each marque offers a different set of virtues, just as the Magico M Pro and the Raidho D-5 do. On certain days I prefer one to the other, and vice versa. But the bottom line is I wouldn’t want to be without either."
Agreed that Valin hasn't lost his love for Soulution, just that he also seems to love CH. Reviews are often reinforcing for readers but as we know, at this level, personal demos are the way to go. Sure would be nice to be able to try out this top-drawer gear as a reviewer!