It’s as easy as 1, 2, 3 to get into a Henriksen Amplifier for payments as low as $25/month. (US RESIDENTS ONLY) SHOP HENRIKSEN AMPLIFIERS During checkout, fill out your billing and shipping information. Choose “Finance with FuturePay” as your payment option. Fill in your date of birth and the last 4 digits of your social security number and hit submit. Confirm your account via an email and you are good to go! Click the image below to view entire FuturePay FAQ pdf.