My Cart Continue shopping “Electro-Harmonix Q-Tron Plus Envelope Filter with Effects Loop [Used]” has been added to your basket. Remove item Thumbnail image Product Price Quantity Subtotal × Electro-Harmonix Q-Tron Plus Envelope Filter with Effects Loop [Used] $159.00 Electro-Harmonix Q-Tron Plus Envelope Filter with Effects Loop [Used] quantity $159.00 Update basket Basket totals Subtotal $159.00 Shipping Flat rate: $5.00 Shipping to HONG KONG ISLAND. Change address Country / region: Select a country / region… AustraliaAustriaCambodiaCanadaChinaCzech RepublicDenmarkFranceGermanyGuamHong KongIndonesiaItalyJapanMalaysiaNetherlandsNew ZealandNorwayPhilippinesPolandPortugalSingaporeSouth AfricaSouth KoreaSpainSwedenSwitzerlandTaiwanThailandUnited Kingdom (UK)United States (US)Vietnam State / County: Select an option… Hong Kong IslandKowloonNew Territories City: Postcode / ZIP: Update Total $164.00 Proceed to checkout