Check the listing for details. 6P14P-EV = EL84 = 6BQ5 Matched / Selected QUAD Reflektor Strong 100% tested. Condition: Used. Listed at 72.00 USD. Tubes are tested and fully working. Slightly used. Strong quad.Strong, matched quad!Manufacture by Reflektor (USSR).Each tube has a sticker with the measurementsThe parameters are measured at Uf = 6.3V, Ua = 250V, Ug2 = 250V, Rc = 120 OhmOur tubes are measured by the professional equipment L3-3 Payment:I accept PAYPAL. Payment in USA, shipping from Ukraine (with tracking number)! Shipping: I shall send it during 3 business of days after reception your payment.Let me know if you have any questions!Thank you and happy bidding.