Whats a good tube preamp?

tube pre-amp plus solid-state amp? i was also hoping that would be the ticket. years ago, i auditioned an ar sp9-mkll - it was so dull & slow, i passed. i really *wanted* to like it - it was so cool-looking! ;~) this was w/an adcom 555 amp & thiel 3.5's, both known for their tendencies to be bright, so ya'd think the ar would have balanced it - no such luck. i can't comment about any other ar stuff, or any other tube preamps - *except* the brand-gnu rogue audio 99, deluxe *magnum* version, that i just got this past thursday nite. well, it's a *lot* better than that sp9 was - great soundstage depth, airy highs, * very* detailed - from the midrange on up. the bass, however, is totally awol, and what little there is, it's very inarticulate. perhaps this will improve when it's broken-in? i don't think so - i've never heard of this aspect of a pre-amp changing much during break-in. and, i'm not talking about head-banger-electronic-type bass, either. listen to the bass on patricia barbour's *inchworm* & *ode to billie joe* on her "cafe blue" album - the bass was *fantastic* w/my linn kairn preamp. in all fairness, tho, my system's lo-end is a pair of bridged adcom gfa555's driving a pair of vmps larger subs, x'd over at 60hz. monitors are meret re's, bi-amped w/a pair of electtrocompaniet amps. maybe other less full-range systems wouldn't even be aware of this preamp's bass deficiencies, but for me, it's a sho-stopper. regretably, this is going up for sale, less than a week old... see audiogon classifieds for specifics. anyone know of a reasonably-priced tube preamp w/an *accurate* low-end response?

re: rogue 99: i may have early-called it - after ~100 hours of burn-in, the bass response *has* markedly improved. still not as tight as the linn kairn, but good enough that i have decided against selling it, considering its exemplary mid-range ease. (and my wife sez i can't, if re-hooking up the kairn is the alternative!) and, who knows - perhaps the bass will improve even *more*...