Check the listing for details. 4-Pin Amplifier / Processor / Speaker / Power Plug AUDISON Bit One SRx VOCE SR. Condition: New. Listed at 9.98 USD. 4-Pin Power / Speaker / Remote / Processor Plug Connector THIS IS A 4 PIN PLUG THAT CAN BE USED WITH THE FOLLOWING MODELS OF PROCESSORS / AMPLIFIERS.Audison Bit One SRx 1D.1 SRx 2.1 SRx 2s.1 SRx 3.1 SRx 4.1 SRx 5.1 SRx 2 SRx 2S SRx 3 SRx 4 SRx 5 SRx 1 VOCE AV due VOCE AV quattro VOCE AV uno VOCE AV 5.1k SR 1D SR 1Dk SR 2 SR 4 SR 5 The plug will be sent by regular parcel with no tracking number. This allows me to keep your shipping cost as low as possible. If you would like a tracking number, you can select a different shipping option at checkout. THERE ARE MANY OTHER BRANDS COMPATIBLE WITH THIS PLUG NOT ON THE LIST. FEEL FREE TO MESSAGE ME ABOUT COMPATIBILITY WITH YOUR PRODUCT. YOU ARE RESPONSIBLE FOR MAKING SURE THIS PLUG FITS WITH YOUR PRODUCT. Item #54