{"product_id":"rvb-95080484-vintage-1970s-api-550a-1-500-series-equalizer-similar-to-550a-550-a-a-1-unit-2","title":"Vintage 1970s API 550A-1 500 Series Equalizer. Similar to 550A. 550 A A-1. Unit 2","description":"\u003cp\u003eThis Vintage 1970s API 550A-1 is in great shape and was recently inspected and had switches and knobs cleaned. All bands and filter work fine and overall the unit sounds great. I have 4 units like this one at the moment. You can send me a message if you are interested in more than one unit. This is the unit 2.\u003c\/p\u003e\u003cp\u003eFor those not used to, the 550A-1 is a very similar unit to the 550A with a few differences:\u003c\/p\u003e\u003cp\u003e- use of ICs in the circuit \u003c\/p\u003e\u003cp\u003e- singe 2520 Op Amp\u003c\/p\u003e\u003cp\u003e- constant Q\u003c\/p\u003e\u003cp\u003e- balanced input (instead of unbalanced)\u003c\/p\u003e\u003cp\u003eThese units use the same 550A faceplate, which sometimes confuses some people\u003c\/p\u003e\u003cp\u003e \u003cbr\u003eI ship worldwide.\u003c\/p\u003e\u003cp\u003ePick up in Nashville available.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCondition:\u003c\/strong\u003e Excellent\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eLocation:\u003c\/strong\u003e Nashville, TN, United States\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSeller:\u003c\/strong\u003e Top Track\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSource URL:\u003c\/strong\u003e \u003ca href=\"https:\/\/reverb.com\/item\/95080484-vintage-1970s-api-550a-1-500-series-equalizer-similar-to-550a-550-a-a-1-unit-2\"\u003ehttps:\/\/reverb.com\/item\/95080484-vintage-1970s-api-550a-1-500-series-equalizer-similar-to-550a-550-a-a-1-unit-2\u003c\/a\u003e\u003c\/p\u003e","brand":"API","offers":[{"title":"Default Title","offer_id":50304630292726,"sku":"95080484","price":1290.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/2882\/7894\/files\/e11fda6e-e0b8-4d2f-bc93-c12ac5d6480f.jpg?v=1775234263","url":"https:\/\/envoy-music.myshopify.com\/products\/rvb-95080484-vintage-1970s-api-550a-1-500-series-equalizer-similar-to-550a-550-a-a-1-unit-2","provider":"Envoy Music","version":"1.0","type":"link"}