When the popular Van Redeker Band sets up to play a show Saturday night, not a single amplifier will be in sight. The group is going all-acoustic for an intimate concert to benefit the Vashon-Maury Island Land Trust at 6:30 p.m. Saturday at the Land Trust Building.

Why the change of tune?

“We’re known primarily as a rock and roll band, but we have a large repertory of acoustic music,” band member Sam Van Fleet said. “We’ve wanted to present this type of music to a larger audience and thought, ‘What better way than a benefit concert for the Land Trust?’”

Speaking for the band, Van Fleet said it “feels great to support a cherished island nonprofit and as musicians, we relish the opportunity to present our music in a unique way in an intimate setting.”

The concert will be limited to 60 people and will be a mixture of original songs and covers. Four new songs will trace the arc of band member Daryl Redeker’s 40-year career. The group ­— Redeker on lead guitar and vocals, Sara Van Fleet on bass, guitar and vocals, Sam Van Fleet on guitar, harmonica and vocals and Dodd Johnson on percussion — will also perform dynamic interpretations of covers by The Beatles, Annie Lennox, Joni Mitchell, Bob Dylan, Johnny Cash and Michelle Shocked.

“This will be the first time we’ll play an entire evening of acoustic,” Van Fleet said, “which seems like a cool and stimulating way to present the music. We’re keen on doing more house concerts this year, as well as hoping to open for well-known off-island bands. We think this ‘unplugged’ concept will be a perfect fit.”

The band’s other perfect fit is supporting the Land Trust, which will receive 100 percent of ticket sales.

Tickets are $25 and sold at Vashon Bookshop, vashonlandtrust.org and at the door.