WASHINGTON — Nix the flags and the podium. Cue the opulent 18-foot tower of gold-bottled French champagne.

When President Obama addresses an elite roster of hipsters and multimillionaires, including hosts Beyoncé and Jay-Z, in New York tonight, he will do so next to a custom-designed tower of $800-per-bottle champagne that dominates the main room at Jay-Z’s 40/40 nightclub.

The 350-bottle champagne tower — designed by Jeffrey Beers — is a monument to Jay-Z’s favorite bubbly, Armand de Brignac, which is known colloquially by rappers, clubgoers and connoisseurs as Ace of Spades because of its gold-spade label.

“It’s floor-to-ceiling gold bottles in the entire space. It’s beautiful — breathtaking,” a rep for the Flatiron District hot spot told The Post. “It’s the first thing you see when you walk in.”

But the White House, which meticulously controls Obama’s image, is not expected to release any photos of the president’s appearance at the lavish club.

Details of the party are “under lock and key,” according to the rep, and the White House was guarding the guest list as if it were the latest intelligence profile of Iran’s nuclear program.

Instead, only a White House pool reporter, allowed brief admittance, will file a report tonight during Obama’s ninth fund-raising trip to the Big Apple this year.

All the campaign would say yesterday was that the president would speak to about 100 people at the $40,000-per-person event, after addressing 200 donors at a $12,500-per-family reception at the Waldorf.

That puts Obama’s campaign haul for the day at more than $6 million.

Before hitting the party, Obama will tape an appearance on David Letterman.