Wembley Treble Booster is the most powerful and fat-sounding of the series. As the name implies, this treble booster is inspired by the device used by Brian May in the big concerts during the 80s, very often combined with other treble boosters. In fact, Wembley Treble Booster, in addition to being used as a standalone treble booster, is perfect for accompanying other Treble Boosters in chain, generating tones in a perfect Live At Wembley ’86 style. Gain: 35db.