Unfortunately I don't think i've got any pre's that would go with that Rotel right now, the Luxman Z502 is nice but wouldn't match it visually if you're bothered by that. The Russ Andrews HP1 would go perfectly but it's a shoebox size pre and only has 2 inputs.
The 70's Rotel RA611 is probably the best integrated i've got right now.
Unfortunately I don't think i've got any pre's that would go with that Rotel right now, the Luxman Z502 is nice but wouldn't match it visually if you're bothered by that. The Russ Andrews HP1 would go perfectly but it's a shoebox size pre and only has 2 inputs.
The 70's Rotel RA611 is probably the best integrated i've got right now.