{"product_id":"telefunken-valve-6550-tk-vacuum-tube-matched-quad","title":"Telefunken Valve 6550-TK Vacuum Tube (Matched Quad)","description":"\u003cp\u003eThe TELEFUNKEN 6550-TK is a high output power tube suitable for use in guitar amplifiers and Leslie speaker systems. Ideal for use in classic Marshall, Fender and Ampeg tube circuits, the 6550-TK offers outstanding performance and stability.\u003c\/p\u003e\n\n\u003cp\u003eTung-Sol developed the 6550 in 1955 for use as a servo amplifier and in industrial applications. The design is based on the 6L6, but with more gain and better stability.\u003c\/p\u003e\n\n\u003cp\u003eLike the 6L6, the 6550 is a beam power tube design (or power tetrode) that can painlessly deliver 35 watts at its output.\u003c\/p\u003e\n\n\u003cp\u003eAny bass player with an Ampeg SVT knows the beauty of the 6550 sound, as well as the raw power they can deliver. One of the best features of the 6550 is the tube’s long life characteristic, which will grant the user fewer tube changes over the years.\u003c\/p\u003e\n\n\u003cp\u003eClick here for the 6550-TK Data sheet.\u003c\/p\u003e\n\n\u003cp\u003eAbout Telefunken Black Diamond Series Vacuum Tubes\u003c\/p\u003e\n\n\u003cp\u003eTelefunken vacuum tubes have been the benchmark of excellence in all audio applications, both productions and reproduction, for many decades. Today, this rich history continues with the introduction of new production tubes from Telefunken Elektroakustik, in partnership with JJ tubes from the Carpathian mountains of Cadca in Slovakia.\u003c\/p\u003e\n\n\u003cp\u003eEach tube is meticulously measured for all critical parameters of performance including transconductance, gain, noise, and microphonics. All Telefunken branded tubes are hand picked to be the best examples of Eastern European construction in the proud tradition with which the name Telefunken Elektroakustik has become synonymous.\u003c\/p\u003e\n\n\u003cp\u003eIn addition to the rigorous testing procedure, all new production Telefunken tubes are cryogenically treated to ensure durability, and subjected to an extended burn-in period to ensure superior stability. The tubes are re-measured subsequent to burn-in, and again before final packaging, in order to guarantee that only the best, lowest noise tubes are offered.\u003c\/p\u003e\n\n\u003cp\u003eDisclaimer\u003c\/p\u003e\n\n\u003cp\u003eNeither SX Pro or TELEFUNKEN Elektroakustik will be held responsible (financially or otherwise) for equipment that is damaged from the use of tubes purchased from us. Each tube has been fully tested to ensure reliability and is guaranteed to perform as described. It is the responsibility of the customer to consult with the equipment manufacturer (or qualified technician) for the selection of proper tubes and proper installation and biasing procedures.\u003c\/p\u003e","brand":"Telefunken Elektroakustik","offers":[{"title":"Default Title","offer_id":57959721009535,"sku":"9802","price":410.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1008\/1216\/1407\/files\/9802-1.jpg?v=1783943307","url":"https:\/\/sxpro.co.uk\/products\/telefunken-valve-6550-tk-vacuum-tube-matched-quad","provider":"SX Pro","version":"1.0","type":"link"}