I own this TL Audio Ivory 5052 mk2
valve EQ/channel strip. Very happy with it and it colors the sound very warm. Use it for vocals with my neumann mics, analog synths and whole mixes. It is possible to krank a lot of frequencies and it still sounds great - the opposite of my software EQ plugs. A friend/studio geak, familar with tubes etc, replaced the tubes to something I don't know (not familiar with tubes) and it sounds even greater.
It has been very popular (especial with a couple mono model of this, 5051) here in Stockholm with many Swedish producers (the reason I bought it long time ago)
If I could afford I would buy TubeTech
(my drummer has that in his studio and it is miracle machines on everything, synths included - best sounding processors I ever heard, gives warmth, deep, closeness, crisp, claws and attitude), but too pricy for my wallet, even with his rebate as reseller.
Tips: If you decide buying a second hand tube EQ, be prepared to replace to tubes when they getting week after used for many hours and the EQ will not sound as good as with new tubes.